#  @__paleologo Gappy (Giuseppe Paleologo) There is no information about Gappy (Giuseppe Paleologo) in the provided tweets. The tweets appear to be discussing various topics, including economists, public intellectuals, and social media trends, but do not mention Gappy. As a result, there is no summary to provide about current events related to Gappy. ### Engagements: [-------] [#](/creator/twitter::1421328887330582528/interactions)  - [--] Week [-------] +570% - [--] Month [---------] -32% - [--] Months [----------] +43% - [--] Year [----------] +63% ### Mentions: [--] [#](/creator/twitter::1421328887330582528/posts_active)  - [--] Week [--] +8.60% - [--] Month [---] +24% - [--] Months [---] +78% - [--] Year [---] -12% ### Followers: [------] [#](/creator/twitter::1421328887330582528/followers)  - [--] Week [------] +0.07% - [--] Month [------] +0.80% - [--] Months [------] +17% - [--] Year [------] +57% ### CreatorRank: [------] [#](/creator/twitter::1421328887330582528/influencer_rank)  ### Social Influence **Social category influence** [technology brands](/list/technology-brands) #5923 [finance](/list/finance) 10.17% [travel destinations](/list/travel-destinations) 5.08% [countries](/list/countries) 4.24% [social networks](/list/social-networks) 3.39% [stocks](/list/stocks) #942 [luxury brands](/list/luxury-brands) 0.85% [automotive brands](/list/automotive-brands) 0.85% [financial services](/list/financial-services) 0.85% [celebrities](/list/celebrities) 0.85% **Social topic influence** [in the](/topic/in-the) 10.17%, [book](/topic/book) 10.17%, [i am](/topic/i-am) 8.47%, [books](/topic/books) 5.93%, [business](/topic/business) #1550, [the most](/topic/the-most) 4.24%, [math](/topic/math) 4.24%, [the first](/topic/the-first) 4.24%, [ai](/topic/ai) 3.39%, [the world](/topic/the-world) #2618 **Top accounts mentioned or mentioned by** [@alxvarfolomiyev](/creator/undefined) [@f4stsc0pe](/creator/undefined) [@jbsdx5](/creator/undefined) [@dogredgogles](/creator/undefined) [@kevin97642887](/creator/undefined) [@paleologo](/creator/undefined) [@macrocephalopod](/creator/undefined) [@ryxcommar](/creator/undefined) [@petarjovovic3](/creator/undefined) [@lossexp](/creator/undefined) [@bennpeifert](/creator/undefined) [@w98ab](/creator/undefined) [@riemannzeta](/creator/undefined) [@number_pizza111](/creator/undefined) [@ben_golub](/creator/undefined) [@xianzhongreturn](/creator/undefined) [@chetaslua](/creator/undefined) [@umassecon](/creator/undefined) [@iowahawkblog](/creator/undefined) [@bengolub](/creator/undefined) **Top assets mentioned** [IBM (IBM)](/topic/ibm) [Alphabet Inc Class A (GOOGL)](/topic/$googl) ### Top Social Posts Top posts by engagements in the last [--] hours "Just this week I have listened to a podcast where the author (CS prof at U Toronto) predicted the end of democracy. The Google X business manager predicting the end of capitalism. Uncountable people predicting the end of white collar jobs blue collar jobs extermination of the rich. A number of them has respectable jobs. The population of forecasters is growing at an alarming rate. It is a very understandable reaction to uncertainty. But it doesn't make a lot of sense to predict the future when one a) has not practiced long-term forecasting; b) has not tracked/calibrated their performance; c)" [X Link](https://x.com/__paleologo/status/2020364935121809832) 2026-02-08T05:11Z 51.7K followers, 17.6K engagements "Another instance in the wild of the Bullshit Asymmetry Principle. The amount of energy needed to refute bullshit is an order of magnitude bigger than that needed to produce it. We are going to live with the $140k poverty line for the next [--] years. On the positive side you can bet against bullshitters. In the long run the market equilibrates. Green writes a piece saying 140k is the new poverty line. Its thoroughly debunked. And a legion of the credulous sycophants who dig the vibe ex post redefine poverty to ennui (the piece never wouldve gotten traction without the 140k poverty thing which" [X Link](https://x.com/__paleologo/status/1995558613100945541) 2025-12-01T18:20Z 51.6K followers, 98.9K engagements "-It has no reverse search. -Editor is primitive. -The voice commands are ineffective. -Can I turn on heavy thinking with a Pro account Seems not. -Missing the flexibility of Claude Code to generate charts code tests text in one fell swoop. -Better than Overleaf for writing support but worse ad an environment. Prism is now available on the web to anyone with a ChatGPT personal account. Coming soon to ChatGPT Business Team Enterprise and Education plans. https://t.co/r2lVbNAT0R Prism is now available on the web to anyone with a ChatGPT personal account. Coming soon to ChatGPT Business Team" [X Link](https://x.com/__paleologo/status/2016374837673857492) 2026-01-28T04:56Z 51.5K followers, 32K engagements "Within business (L/S eq systematic macro etc) and (less well) across businesses revenue per investment professional is a coarse measure of performance but ok. Above $10M/employee: very good. $5-10M: okish. $5M: shut down that business before it shuts down the firm. That's assuming capex etc. are not abnormally high like in some systematic. If not the bar is higher. Now do revenue per employee https://t.co/mJcdsGXYaR Now do revenue per employee https://t.co/mJcdsGXYaR" [X Link](https://x.com/__paleologo/status/2016749417882087915) 2026-01-29T05:45Z 51.5K followers, 58.7K engagements "There was an interesting podcast episode with a sr Anthropic researcher (Sholto Douglas on MAD podcast Not completely sure) where he noticed how later smaller models (he was talking about Sonnet) often outperform earlier smaller ones. Distillation parameter architecture. It seems all of them contribute. It's great news for the rest of us users. I dream of a competitive on-device coding assistant. Maybe it's coming. New Claude model update(s) are coming The upcoming "Fennec" model (Sonnet update) seems to be better than Opus [---] according to tests from @chetaslua https://t.co/jBvGRj3NfE New" [X Link](https://x.com/__paleologo/status/2017974456908484631) 2026-02-01T14:52Z 51.5K followers, 23.2K engagements "I like LA and Chicago very much. I like Denver. Miami is like Naples managed by Spanish speakers so it suits me. I enjoyed Houstonians on a massive scale. Gimme Toronto or Montreal any time and all Canadians. Therefore its only fair that I have been living in NY (most overrated city in the solar system) for [--] years. Have a good day. https://twitter.com/i/web/status/2019390675112886642 https://twitter.com/i/web/status/2019390675112886642" [X Link](https://x.com/__paleologo/status/2019390675112886642) 2026-02-05T12:40Z 51.6K followers, 18.4K engagements "I will take the other side of Bowles (or of Weber) any day. And whenever somebody invokes common sense or moral intuition as self-evident or invocations of sociopathy my spider-sense tickles. See you all tonight at the Caviar Russe. In economics we cannot say that the marginal utility of providing milk to kids is more than that of a rich person enjoying an extra bid of caviar. Isn't this sociopathic This lack of morality is designed to prevent redistribution. Sam Bowles @UMassEcon In economics we cannot say that the marginal utility of providing milk to kids is more than that of a rich person" [X Link](https://x.com/__paleologo/status/2019423559320498295) 2026-02-05T14:51Z 51.6K followers, 11.6K engagements "My mini rel-value pairs: Overrated: Tokyo. Underrated: Osaka. Overrated: Barcelona. Underrated: Madrid. Overrated: Florence. Underrated: Naples. Overrated: Cairo. Underrated: Alexandria. Overrated: New York. Underrated: Houston. Paris: rightly rated. Kyoto. Also Berlin. I dont know that many cities though. https://twitter.com/i/web/status/2019474873018376503 https://twitter.com/i/web/status/2019474873018376503" [X Link](https://x.com/__paleologo/status/2019474873018376503) 2026-02-05T18:15Z 51.5K followers, [---] engagements "@JBsdx5 @dogredgogles Rome overrated in yer dreams" [X Link](https://x.com/__paleologo/status/2019478802691166501) 2026-02-05T18:30Z 51.5K followers, [--] engagements "@macrocephalopod I don't think I could derive Black-Scholes today but probably would not hire anyone who could. Matrix inversion and quicksort are very fair questions" [X Link](https://x.com/__paleologo/status/2019930874926809580) 2026-02-07T00:27Z 51.6K followers, 17.2K engagements "@f4stsc0pe Once at a previous hedge fund I saw code where the author (a PhD in Statistics from Berkley) inverted the Gramian and after 10+ years it still triggers me" [X Link](https://x.com/__paleologo/status/2020127085151359486) 2026-02-07T13:26Z 51.6K followers, [----] engagements "J.G.: add this to all dashboards ASAP. A crazy mental trick is to map complex concepts onto regions the brain is primed for (Chernoff). The most hilarious example Ive seen ismultivariate portfolio data on cartoon fish. Analysts would thus look for the "weird fish" in the aquarium. https://t.co/2AyFClFK1t A crazy mental trick is to map complex concepts onto regions the brain is primed for (Chernoff). The most hilarious example Ive seen ismultivariate portfolio data on cartoon fish. Analysts would thus look for the "weird fish" in the aquarium. https://t.co/2AyFClFK1t" [X Link](https://x.com/__paleologo/status/2020128139775562148) 2026-02-07T13:30Z 51.6K followers, 39.5K engagements "@iowahawkblog DAVID Volskwagen Group famously owns Lamborghini" [X Link](https://x.com/__paleologo/status/2020151707448098933) 2026-02-07T15:04Z 51.6K followers, [--] engagements "@ryxcommar @PetarJovovic3 @f4stsc0pe (shorter) Trefethen and Bau: https://www.johndcook.com/blog/2010/01/19/dont-invert-that-matrix/ https://gregorygundersen.com/blog/2020/12/09/matrix-inversion/ https://www.johndcook.com/blog/2010/01/19/dont-invert-that-matrix/ https://gregorygundersen.com/blog/2020/12/09/matrix-inversion/" [X Link](https://x.com/__paleologo/status/2020161244842332399) 2026-02-07T15:42Z 51.6K followers, 16.9K engagements "@LossExp There are projects like Good Judgment etc. I dont follow them closely. I like that Scott Alexander makes/made predictions with probs and then scored them a year later. Obvious books I read are Superforecasters and The Art of the Long View" [X Link](https://x.com/__paleologo/status/2020393696022405222) 2026-02-08T07:06Z 51.6K followers, [---] engagements "@kevin97642887 Like" [X Link](https://x.com/__paleologo/status/2020394281664446662) 2026-02-08T07:08Z 51.6K followers, [---] engagements "@ben_golub @RefineInk In any case refine made me realize I have a long way to learn how to ask claude code better questions. They did make mistakes but ultimately I instructed them poorly" [X Link](https://x.com/__paleologo/status/2020503857370223009) 2026-02-08T14:23Z 51.6K followers, [---] engagements "Happy birthday wherever you are" [X Link](https://x.com/anyuser/status/1903052265906225456) 2025-03-21T11:53Z 51.7K followers, 178.4K engagements "I am positively annoyed by most of X AI takes recently (so I don't visit) but I can still vent right How is this even a headline on the WSJ I am seriously thinking of leaving civilization for a while to become a hunter-gathererer with the San of Botswana" [X Link](https://x.com/__paleologo/status/2022028899228713456) 2026-02-12T19:23Z 51.7K followers, [----] engagements "Which book title is better a) The Elements of Fundamental Investing b) A Grimoire of Fundamental Investing a b I suggest in comments both work a b I suggest in comments both work" [X Link](https://x.com/__paleologo/status/2022157909472555362) 2026-02-13T03:56Z 51.7K followers, [----] engagements "We went from LLMs can't do math better than a CAS to LLMs found a better bound in an optimization paper to LLMs solve Erds problems because they learned them from their corpus to LLMs solve a new Erds problem from scratch to LLMs are helping address the Navier-Stokes Clay problem. All of this in less than two years. This is not to say that we'll give the Fields medal to AI before [----]. Just we should not make point forecasts. https://twitter.com/i/web/status/2010108439599690067 https://twitter.com/i/web/status/2010108439599690067" [X Link](https://x.com/__paleologo/status/2010108439599690067) 2026-01-10T21:56Z 51.7K followers, 64.1K engagements "Trivia night Congratulations to the Pineapple Pizza team" [X Link](https://x.com/__paleologo/status/2022414278058467451) 2026-02-13T20:55Z 51.7K followers, [----] engagements "Once in a while I post some math & science blogs or sites I like. I also have a gazillion bookmarks which I have to parse at some point. https://claude.com/resources/tutorials https://lilianweng.github.io/ https://francisbach.com/ https://www.ethanepperly.com/ https://terrytao.wordpress.com/ https://www.argmin.net/ https://djalil.chafai.net/blog/ https://www.quantamagazine.org/ https://www.johndcook.com/blog/ @__paleologo @ryxcommar @PetarJovovic3 @f4stsc0pe I will wish you get everything you ever wanted if you can drop your rss feed(even a few of them would work) for math blogs pls pls pls" [X Link](https://x.com/__paleologo/status/2020214018732909005) 2026-02-07T19:12Z 51.7K followers, 29.2K engagements "A minor lesson I learned. Hudson River Trading has large cafeterias in all of its centers. And an abnormal amount of communal spaces (alcoves booths meeting room). You sit for lunch and talk to strangers or old friends. I estimate that premier real estate space (and the chef-served lunches) to cost $20-30m/yr. It is a 100x return/yr. Eating together is how you get people to lower their defenses talk trust others collaborate create alliances since the Pleistocene. And the lesson is that you can win at technology by going back to very simplest ancestral things. Sharing 8+ meals a week with" [X Link](https://x.com/__paleologo/status/2022458931113873620) 2026-02-13T23:52Z 51.7K followers, 292.7K engagements "Autographed copies of my book Elements of Quantitative Investing will be available exclusively to guests at Numerai'sconference January 30th in San Francisco. P.S.: I mildly customized the original poster for clicks. Good job grok. https://luma.com/numercon2026 https://luma.com/numercon2026" [X Link](https://x.com/__paleologo/status/2010830729463169439) 2026-01-12T21:46Z 51.6K followers, [----] engagements "In the Jackson Hole office we have skis Milo and math. And bbg. Not much else needed in life" [X Link](https://x.com/__paleologo/status/2012245523902714293) 2026-01-16T19:28Z 51.6K followers, 95.4K engagements "A surprising number of AI/ML opining on the future of capitalism and democracy. These people have no more cognitive edge (possibly less) than my doorman at work. Definitely less edge than academic economists" [X Link](https://x.com/__paleologo/status/2020292594652311702) 2026-02-08T00:24Z 51.6K followers, [----] engagements "Department of Large Predictions spherical rotations edition. From Greece to Rome to Britain to America. From the Massachusetts Bay Colony to the Wild West to San Francisco. The technological frontier kept moving West till it reached the Pacific Ocean. But if the wealth seizures destroy Silicon Valley as they are intended to do and From Greece to Rome to Britain to America. From the Massachusetts Bay Colony to the Wild West to San Francisco. The technological frontier kept moving West till it reached the Pacific Ocean. But if the wealth seizures destroy Silicon Valley as they are intended to" [X Link](https://x.com/__paleologo/status/2020487032552759679) 2026-02-08T13:17Z 51.6K followers, 10.9K engagements "I did not realize it is the Super Ball today" [X Link](https://x.com/__paleologo/status/2020669331642741015) 2026-02-09T01:21Z 51.7K followers, [----] engagements "There was an excellent satirical magazine associated to the then Italian Communist Party who came up with a fantastic article whose title was "Mickey Mouse f*ks" based on a story that ran in the Italian "Mickey Mouse" weekly magazine (which was by the way also excellent). Everyone in Italy assumed that Mickey was gay and that Minnie was a beard so this was a shock for many. https://twitter.com/i/web/status/2020985315981136103 https://twitter.com/i/web/status/2020985315981136103" [X Link](https://x.com/__paleologo/status/2020985315981136103) 2026-02-09T22:17Z 51.7K followers, [----] engagements "An interview with Dmitry Balyasny. The interviewer is [--] and asks good questions. Theres also an older interview of Dmitry with Rubinstein that is informative" [X Link](https://x.com/__paleologo/status/2021553058459828296) 2026-02-11T11:53Z 51.7K followers, 27.1K engagements "So we went from software will eat the world to software will eat itself @pmarca" [X Link](https://x.com/__paleologo/status/2021668927517208763) 2026-02-11T19:33Z 51.7K followers, [----] engagements "I am not sure this satire (more efficient government) but I hope it happens. And I am contrarian-long Europe. Billionaires are sick of the California government They're moving to somewhere with: - More efficient government - Better lifestyle - Warmer weather That's exactly why Italy is about to become the business capitol of the world https://t.co/aLduUTyt12 Billionaires are sick of the California government They're moving to somewhere with: - More efficient government - Better lifestyle - Warmer weather That's exactly why Italy is about to become the business capitol of the world" [X Link](https://x.com/__paleologo/status/2022446530209485215) 2026-02-13T23:03Z 51.7K followers, 15.6K engagements "Another little story. Until the early 90s IBM Research in Yorktown served free lunch. The chef was named Jean-Jacques. I recall Mandelbrot having lunch with his friends every day. Alan Hoffman Charlie Bennett and many other cool dudes were there and you could just eat with them. Then IBM had a major crisis. They laid off 40% of the workforce. They started charging for lunch every day except Monday. Then they laid off Jean-Jacques and charged every day but coffee was free. Then coffee was free only Mondays. Still Jean-Jacques catered at my wedding. We all knew each other because we all ate" [X Link](https://x.com/__paleologo/status/2022461821098078249) 2026-02-14T00:04Z 51.7K followers, 124.8K engagements "Which brings me to the last chapter of the story which is my team and my firm at large. Every time there is a PM or a QR offsite its always the same story. People come for the technical talks and then stay for the dinners. What they really cherish though its the dinners. Because everyone crave connection. https://x.com/__paleologo/status/2022414278058467451s=46&t=0766N4ICwAiHDpMyUQG9Yw Another little story. Until the early 90s IBM Research in Yorktown served free lunch. The chef was named Jean-Jacques. I recall Mandelbrot having lunch with his friends every day. Alan Hoffman Charlie Bennett" [X Link](https://x.com/__paleologo/status/2022466733726953639) 2026-02-14T00:23Z 51.7K followers, 14.4K engagements "This is self-recommending. https://www.youtube.com/@almostsure/videos https://www.youtube.com/@almostsure/videos" [X Link](https://x.com/__paleologo/status/1862569533556531444) 2024-11-29T18:49Z 51.6K followers, 13.2K engagements "Thanks for the shoutout. Ministory: I learned about Moontower from a derivs risk manager I hired at HRT ( hi Jessie) and I been a reader ever since. Sunday Moontower #282 πThe GFC from a quant's perspective π How I understand the Black-Scholes formula refs: @__paleologo @justinskycak @tracewoodgrains https://t.co/E9KXCUx9KG Sunday Moontower #282 πThe GFC from a quant's perspective π How I understand the Black-Scholes formula refs: @__paleologo @justinskycak @tracewoodgrains https://t.co/E9KXCUx9KG" [X Link](https://x.com/__paleologo/status/1964738717534527974) 2025-09-07T17:13Z 51.6K followers, 84.7K engagements "Of interest (maybe). I was asked by a candidate portfolio manager what are the qualities I consider essential to be a good PM. It's a good question. There's the analytical answer that goes over individual qualities based on experience analysis of past transcripts etc. which is important and that of course doesn't belong in X. But there is also the synthetic answer. Jim Simons said over and over that he had good taste in selecting people (which did not prevent him from cycling through Baum Ax Cardona etc. before getting to Berlekamp); and that the people he hired had also good taste. The" [X Link](https://x.com/__paleologo/status/1979912873766776982) 2025-10-19T14:09Z 51.6K followers, 132.7K engagements "Apologies if this is too obvious. Two strategies are running for one year. The first half and the second half of the year they are allocated possibly different $volatilities. The first one receives ($50m $50m). The second one receives ($30m $65m). What is the relationship between the strategies annualized volatilities" [X Link](https://x.com/__paleologo/status/1983334529763889379) 2025-10-29T00:46Z 51.6K followers, 66.4K engagements "https://open.substack.com/pub/byfire/p/book-review-the-predictors https://open.substack.com/pub/byfire/p/book-review-the-predictors" [X Link](https://x.com/__paleologo/status/1986935863658619139) 2025-11-07T23:16Z 51.6K followers, 42.1K engagements "Say you toss a coin [---] times. You want to report a "good" metric describing the biasedness of the coin. % heads will do. Reporting the longest streak of tails is not informative. In fact it can be misleading. And yet that is what most portfolio manager tearsheets do" [X Link](https://x.com/__paleologo/status/1990400153694421203) 2025-11-17T12:42Z 51.6K followers, 68.2K engagements "I don't believe I have posted anything *remotely* practical in one year. I think @macrocephalopod has slowed down too. @moreproteinbars and @QuiteMidlife outdo each other posting food pics with occasional war stories; @bennpeifert also really got tired and busy. As for @Gingfacekillah his books are where it's at. @0xfdf went silent. @KrisAbdelmessih at least has a good substack. And then "traders" (on those lists) on X are perhaps *too* practical. As for actual professional traders and PMs all lurkers: not one of the those I personally know posts. Maybe we're all worried about the coming of" [X Link](https://x.com/__paleologo/status/1964803074838667686) 2025-09-07T21:28Z 51.7K followers, 186.3K engagements "The more I use Claude and ChatGPT the more I am convinced we are not even close to AGI. Intelligence may be a gigabig Markov Chain. Just not *these* Markov Chains" [X Link](https://x.com/anyuser/status/1804151613541478646) 2024-06-21T13:57Z 51.7K followers, 61.1K engagements "MAJOR DROP: "The Element of Quantitative Investing" latest book draft. Links at the end of the π§΅. Short introduction: I am writing a book on quantitative investing for Wiley (April 2025). It's the book I wanted to write all along but I strayed and wrote another book first" [X Link](https://x.com/anyuser/status/1804355464244654497) 2024-06-22T03:27Z 51.7K followers, 83.2K engagements "This paper will make all your hedging dreams come true. Implement it and in the event that it does thank me later. https://arxiv.org/abs/2207.00932 https://arxiv.org/abs/2207.00932" [X Link](https://x.com/anyuser/status/1806704320982782299) 2024-06-28T15:00Z 51.7K followers, 65.1K engagements "Telegram has basically 1B users [--] engineers less than [--] employees. Fermi's lab in Rome discovered one of the four fundamental forces. One adult and [--] barely twentysomethings. Rentech XTX I guess all their engineers and researchers total less than [---] ppl. There is *a lot* that can be accomplished with a groups of talented individuals working together. Seek excellent passionate people. Seek selfless collaboration. Add integrity (to avoid the FTX edge cases) and the sky is the literal limit" [X Link](https://x.com/anyuser/status/1816528742845464638) 2024-07-25T17:39Z 51.7K followers, 71K engagements "I have compiled all my book recommendations (up to now) in a convenient document With pictures links and one-liner explanations. Enjoy. https://www.dropbox.com/scl/fi/qla85rge5nugfot45damz/gappycanon.pdfrlkey=kau4ct3kz3vmu2ptlg6bnce4w&st=4b9dhne9&dl=0 https://www.dropbox.com/scl/fi/qla85rge5nugfot45damz/gappycanon.pdfrlkey=kau4ct3kz3vmu2ptlg6bnce4w&st=4b9dhne9&dl=0" [X Link](https://x.com/anyuser/status/1823833896112529618) 2024-08-14T21:27Z 51.7K followers, 187.5K engagements "One idea/aspiration I have is to write a "Little Book of Portfolio Management" formatted like--and in the spirit of--"The Little Book of Deep Learning" by Fleuret. But even shorter than that. Half the size of Advanced Portfolio Management and more practical. And then try to put it on the phone of every portfolio manager in the world for free. [---] pages of this text and figure density:" [X Link](https://x.com/anyuser/status/1825710324260938096) 2024-08-20T01:43Z 51.7K followers, 40.8K engagements "OK thats what Id call a good email from a total stranger" [X Link](https://x.com/anyuser/status/1828777751022624849) 2024-08-28T12:52Z 51.7K followers, 463.2K engagements "@createoperate "Can you help me grow my lantanas Or get a job as a quantitative trader"" [X Link](https://x.com/anyuser/status/1828884649050804418) 2024-08-28T19:57Z 51.7K followers, 17.4K engagements "Here are some recommended books on probabilistic thinking and decision making in a broad sense. Not in a specific order: [--]. The signal and the noise by N. Silver [--]. Thinking in bets by A. Duke [--]. Quit by A. Duke [--]. The model thinker by S. Page [--]. The scout mindset by J. Galef [--]. The book of Why by J. Pearl [--]. Superforecasters by P. Tetlock [--]. Risk savvy by G. Gigerenzer [--]. Calculated risk by G. Gigerenzer [--]. Thinking fast and slow by D. Kahneman [--]. The drunkard's walk by L. Mlodinow Think of it there are not many good books about probabilistic thinking: my beloved Gigerenzer maybe Nate" [X Link](https://x.com/anyuser/status/1837643225210998942) 2024-09-22T00:01Z 51.7K followers, 134.6K engagements "Consistent with log utility" [X Link](https://x.com/anyuser/status/1841997833974497527) 2024-10-04T00:24Z 51.7K followers, 36.6K engagements "I picked up this book again. I know the first author (from MLP). I think its underrated. My good morning to you" [X Link](https://x.com/anyuser/status/1851973785877967331) 2024-10-31T13:05Z 51.7K followers, 37.1K engagements "This is in a way a practical book about the Kelly criterion. I bought two copies by mistake. If were having lunch and you are interested remind me to bring you the spare copy. Haghani btw is the Haghani. With Larry Hilibrand the real on-the-ground PM at LTCM" [X Link](https://x.com/anyuser/status/1851976192624046489) 2024-10-31T13:15Z 51.7K followers, 103.7K engagements "Lets say pessimistically 30m seconds left. Begin" [X Link](https://x.com/anyuser/status/1853584603010719928) 2024-11-04T23:46Z 51.7K followers, 198.4K engagements "One of the three tools of active risk management is hedging. In politics you donate to both parties. Even the poster boy of Bad Risk Management SBF did it. Yet if I look at Musks actions (the [----] rocket launch Trumps support Twitter purchase) he does absolutely none of it. Zero. And very concentrated bets. Its a bit unintuitive. Do this enough over time and you should achieve spectacular financial ruin. But of course if you always win you may end up Emperor of the Solar System by [--]. And why do people always exclude the possibility of a deal with the devil. It explains everything" [X Link](https://x.com/anyuser/status/1854487003129086177) 2024-11-07T11:32Z 51.7K followers, 62.5K engagements "CUSUM is an algorithm for change-point detection. It's kind of magical. Here is a financial application which is very important in itself to showcase its magic. A short informal π§΅ to be rewritten in a more formal technical note. Ready let's go. 1/" [X Link](https://x.com/anyuser/status/1854746535705076008) 2024-11-08T04:43Z 51.7K followers, 104.8K engagements "The paper to end all papers. Multiple testing did the heavy lifting. We needed the post-doc to write the paper and fix the LaTeX tables. Now our job is done" [X Link](https://x.com/anyuser/status/1869070028479603043) 2024-12-17T17:19Z 51.7K followers, 125.1K engagements "Boys use AI. Men use linear regression. The year is [----]. AI has taken over the earth along with the [--] nearest earth-like planets. Kwants are still studying linear regression. The year is [----]. AI has taken over the earth along with the [--] nearest earth-like planets. Kwants are still studying linear regression" [X Link](https://x.com/anyuser/status/1871688873744691491) 2024-12-24T22:46Z 51.7K followers, 61.7K engagements "Wanted to say that Im thankful for: - a healthy family - a job I love - living in a great town - linear regression Wanted to say that Im thankful for: - a healthy family - a job I love - living in a great town - all the great mutuals I have on Twitter Wanted to say that Im thankful for: - a healthy family - a job I love - living in a great town - all the great mutuals I have on Twitter" [X Link](https://x.com/anyuser/status/1871734652123349464) 2024-12-25T01:48Z 51.7K followers, 43K engagements "I didn't appreciate this game the first time I tried to read it (a long time ago). But maybe I should give it another try. Has anyone read it" [X Link](https://x.com/anyuser/status/1873165290324017630) 2024-12-29T00:33Z 51.7K followers, 84.7K engagements "Long morning thought: 25+ yrs ago I chose as a PhD major Operations Research/Management Science and got a MS in Statistics as a byproduct of courses taken. Somehow it worked for me. But if I had to choose a PhD field today I would not even consider OR/MgmtSci/Stats/EE. If you want to work in Statistics don't get a PhD in Statistics. If you want to work in applied math (of which OR is a special case) don't get a PhD in Applied Math or OR. OR Statistics Applied Math have been taken over and made irrelevant and exist as academic vestigial outposts. OR in particular has become kind of a sad joke." [X Link](https://x.com/anyuser/status/1873400753689432284) 2024-12-29T16:08Z 51.7K followers, 127.8K engagements "End of day consolation. I just want to say that if you do any research 95% of what you try wont work and that is ok. Dont be sad. You are in the business of heavy tails. New Yorker cartoonists great physicists famous poets and degen gamblers are your brethren. Not dentists and line order cooks" [X Link](https://x.com/anyuser/status/1874676539083678153) 2025-01-02T04:38Z 51.7K followers, 52.1K engagements "Elements of Dimensionality Reduction and Manifold Learning. Long lots of interesting topics from Johnson-Lindenstrauss to Kernel methods to metric embeddings to autoencoders. I am attaching sections of the TOC" [X Link](https://x.com/anyuser/status/1878213833216360614) 2025-01-11T22:54Z 51.7K followers, 39.7K engagements "A meandering π§΅ on heavy tails. I usually recommend "Fundamentals of Heavy Tails" by Nair @AdamWierman and @BertZwart1 as an introduction to Heavy Tailed phenomena: 1/8" [X Link](https://x.com/anyuser/status/1879357170233573515) 2025-01-15T02:37Z 51.7K followers, 87.4K engagements "Longer quote: Nick Patterson formerly with Renaissance Technologies: ".the most important thing to do in data analysis is to do the simple things right. So here's a kind of non-secret about what we did at Renaissance: in my opinion our most important statistical tool was simple regression Nick Patterson formerly with Renaissance Technologies: ".the most important thing to do in data analysis is to do the simple things right. So here's a kind of non-secret about what we did at Renaissance: in my opinion our most important statistical tool was simple regression" [X Link](https://x.com/anyuser/status/1879440736774738247) 2025-01-15T08:09Z 51.7K followers, 232.9K engagements "I usually recommend Harrells Regression Strategies Gelman et als Regression and Other Stories and Wassermans All off Statistics vol [--]. And Bruce Hansens Prob and Stats for Economists. I wonder if people reading this have other recs. Can please post in reply Id sincerely appreciate. @__paleologo Any book recommendations on linear regression @__paleologo Any book recommendations on linear regression" [X Link](https://x.com/anyuser/status/1879705134252409024) 2025-01-16T01:40Z 51.7K followers, 100.8K engagements "Crypto. How it started. How is it going" [X Link](https://x.com/anyuser/status/1881116374959034667) 2025-01-19T23:07Z 51.7K followers, 34.9K engagements "It seems (until conspiracy theorists are proven right) that Deepseek was developed by a HF with $7B AUM big but very far from the bigger ones and very very far from AMZN/OAI/META-level resources; and a fund which (like all HFs) has had its share of challenges and losses etc. To me thats a humbling/exciting lesson in showing a) what is possible; b) that raw resources are not everything and sometimes resource scarcity can be a blessing; c) that many large HFs and prop trading firms *given their own current resources* can achieve much more. TFW its 7:19AM on a Saturday in NYC. What are you doing" [X Link](https://x.com/anyuser/status/1883127505378295936) 2025-01-25T12:19Z 51.7K followers, 48.9K engagements "An inordinate number of friends in finance buy restaurants. And I am. ok. But why my friend WHY Its a terrible investment its not even fun. Is there an explanation They have none" [X Link](https://x.com/anyuser/status/1889476879251296322) 2025-02-12T00:49Z 51.7K followers, 116.1K engagements "I have had so many formal & informal conversations that go like this: PM: I have a Sharpe Ratio 2+ and want a drawdown limit of 1+ annual $vol Me: Wait with that Sharpe you dont need such a wide limit. PM: Well I dont have *that* Sharpe *all the time*. Me: Indeed I am also vegetarian in between meals. PM feels seen. Hilarity ensues. And that was the financial dad humor that was. Have a good day" [X Link](https://x.com/anyuser/status/1890416436163518719) 2025-02-14T15:02Z 51.7K followers, 56.4K engagements "Looking for a man in finance Sharpe two no drawdowns blue eyes" [X Link](https://x.com/anyuser/status/1890478214490841140) 2025-02-14T19:08Z 51.7K followers, 36.7K engagements "Basic hedge fund economics π§΅. N.B.: [--]. for educational purposes only and I will keep it super-simple [--]. ofc personal views [--]. No soliciting I am not coming to defend hedge funds just to explain some basics. And I am not going to answer replies on the Current Thing. 1/" [X Link](https://x.com/anyuser/status/1895891840651706577) 2025-03-01T17:40Z 51.7K followers, 193.5K engagements "Underrated & rarely talked about" [X Link](https://x.com/anyuser/status/1896202159726919971) 2025-03-02T14:13Z 51.7K followers, 182.4K engagements "Also underrated & rarely talked about P.S.: I don't post about competitors as a comms rule but I think I get an exception here. Underrated & rarely talked about https://t.co/RTzfFDfc74 Underrated & rarely talked about https://t.co/RTzfFDfc74" [X Link](https://x.com/anyuser/status/1896234661409603833) 2025-03-02T16:22Z 51.7K followers, 132.8K engagements "@JayAndelle0 Divine Comedy Canto XXVI https://digitaldante.columbia.edu/dante/divine-comedy/inferno/inferno-26/ https://digitaldante.columbia.edu/dante/divine-comedy/inferno/inferno-26/" [X Link](https://x.com/anyuser/status/1900699388642566440) 2025-03-15T00:03Z 51.7K followers, 54.3K engagements "A few days ago I gave a talk at Columbia's conference on "The Future of Portfolio Management". Title: "Simpler (portfolio) heuristics that make us smarter". Below is the link to the slides. A short intro. 1/" [X Link](https://x.com/anyuser/status/1903470912864976900) 2025-03-22T15:36Z 51.7K followers, 69.5K engagements "Reading a WSJ article on the US stock market being overvalued. Arguments: - quotes random Irish investor living in the Netherlands - quotes Slovakian trader living in Miami (admittedly good-looking) - mentions aggregate P/E ratios of various indices - quotes random American living in Germany who is diversifying - but a random Australian investor likes US stocks And that was the whole article. On the WSJ. On the @WSJ To the financial editor of the WSJ: do you remember the last sentence of the Tractatus Logico-Philosophicus Right. That one" [X Link](https://x.com/anyuser/status/1903889477178708183) 2025-03-23T19:19Z 51.7K followers, 62.8K engagements "I am revisiting linear regression to prepare a small teaching module (semi-advanced) on it. The following page is I think useful. It unifies many disparate tests of hypothesis (e.g. linear regression t-stat ANOVA etc) in a single framework. https://lindeloev.github.io/tests-as-linear/ https://lindeloev.github.io/tests-as-linear/" [X Link](https://x.com/anyuser/status/1904173130525954497) 2025-03-24T14:07Z 51.7K followers, 39.4K engagements "I did not realized that Learning Theory from First Principles has been published. It is still freely available. I really like this book for its choice of topics. It covers everything that matters" [X Link](https://x.com/anyuser/status/1905228228857332022) 2025-03-27T11:59Z 51.7K followers, 278.3K engagements "Yesterday I linked to a pretty dense book. Today: a 165-pp booklet formatted for iphones; The little book of deep learning by F. Fleuret. To the point. And you can read it during bathroom breaks I did not realized that Learning Theory from First Principles has been published. It is still freely available. I really like this book for its choice of topics. It covers everything that matters. https://t.co/dLUle3IUmb I did not realized that Learning Theory from First Principles has been published. It is still freely available. I really like this book for its choice of topics. It covers everything" [X Link](https://x.com/anyuser/status/1905577248398151838) 2025-03-28T11:06Z 51.7K followers, 58.2K engagements "If we collide portfolio managers at very high speed do they emit alpha particles" [X Link](https://x.com/anyuser/status/1915525685243789376) 2025-04-24T21:58Z 51.7K followers, 37K engagements "If I go on OnlyFans and do paid sessions on advanced linear regression wearing stilettos are you going to pay up #monetization" [X Link](https://x.com/anyuser/status/1917619447264862698) 2025-04-30T16:37Z 51.7K followers, 82K engagements "Stanford videos (and interviews with the creators) of "14 Statistical Ideas that Changed the World". Lasso FDR Conformal Inference Boosting EM Bootstrap Gibbs Sampling GAMs. https://www.youtube.com/playlistlist=PLt_pNkbycxqahVksaNnjz3M6759xHIZ-r https://www.youtube.com/playlistlist=PLt_pNkbycxqahVksaNnjz3M6759xHIZ-r" [X Link](https://x.com/anyuser/status/1918269195466244376) 2025-05-02T11:39Z 51.7K followers, 66.9K engagements "Are these the best film about Finance Margin Call The Big Short The smartest Guys in the Room Too Big to Fail The Wolf of Wall Street With the exception of TWOWS (which has no pretense of realism) they are all forgettable quite poorly researched movies. And the only one about HFs is The Big Short which is based on a Michael Lewis book so you know is fiction masquerading as facts" [X Link](https://x.com/anyuser/status/1920742386721825016) 2025-05-09T07:27Z 51.7K followers, 105.7K engagements "This is a long semi-technical π§΅ on Tail Risk Hedging. It's unusual in the sense that I am posting it as I am trying to figure stuff out out of frustration. I find OPP (other people's posts) about Tail Risk Hedging a bit vague or confusing (exception: @bennpeifert). 1/" [X Link](https://x.com/anyuser/status/1921646636125901037) 2025-05-11T19:20Z 51.7K followers, 113.8K engagements "Apology to New Yorkers. Chicago is still the most beautiful city in a few thousand miles" [X Link](https://x.com/anyuser/status/1922833119993819211) 2025-05-15T01:55Z 51.7K followers, 33.1K engagements ""Dive into Deep Learning" is a sprawling collection of code and theory (almost 1200pp) co-authored among others by Alex Smola. It is a very useful reference for specialized topics. https://arxiv.org/abs/2106.11342 https://arxiv.org/abs/2106.11342" [X Link](https://x.com/anyuser/status/1923735178091917363) 2025-05-17T13:39Z 51.7K followers, 46.5K engagements "A rough but not bad metric for performance of a hf/prop trading firm is revenue/employee (not only investment team size). The very best are close to $20m/employee (but I don't know recent numbers for RenTech and TGS). On non-HFs OnlyFans is doing well. If I ever start a fund will call it OnlyHedges. Humble goal. Augurs well" [X Link](https://x.com/anyuser/status/1926707033320874311) 2025-05-25T18:28Z 51.7K followers, 94.6K engagements "Find your own way of functioning. My mind is much slower than most of my colleagues minds and I discovered that when I was an undergraduate. I struggled for the first year and a half as an undergraduate at Caltech where I spent most of my subsequent career but I developed my own ways of learning things. Keeping records of what I was learning working things out in my own way and notebooks and so forth that enabled me to achieve despite having a slow working mind. So I advise students you find your own way and you have to experiment of mastering material and your own directions that you can be" [X Link](https://x.com/anyuser/status/1929251784247132393) 2025-06-01T19:00Z 51.7K followers, 36.3K engagements ""Why are you still on X" π" [X Link](https://x.com/anyuser/status/1930806454098763995) 2025-06-06T01:58Z 51.7K followers, 51.4K engagements "There are not many books that describe strategies in some detail. Understandable. Even the simplest strategy is full of nuances and there is a massive difference between the median practitioner and the best one. This one comes to mind. At $18 on AMZN its a good deal" [X Link](https://x.com/anyuser/status/1934232150959608048) 2025-06-15T12:50Z 51.7K followers, 88.6K engagements "Word for word @lexfridman s interview with Terry Tao is the most interesting concept-packed podcast interview ever recorded. The underlying theme is how to ask question as told by someone who has asked the questions" [X Link](https://x.com/anyuser/status/1935215267119768047) 2025-06-18T05:57Z 51.7K followers, 69.2K engagements "I know more than one people who can guess betas and correlations visually. Once I met a person (not joking) who guessed the correlation using one data point. So I decided to train my eyes. You can do it too and influence people and win friends" [X Link](https://x.com/anyuser/status/1935655525200404957) 2025-06-19T11:06Z 51.7K followers, 108.5K engagements "Kris: I believe you may be optimistic here. My sample: [--]. Retail: during my last gardening I called out to successful retail traders (I posted criteria) and spoke to [--] of them some very famous from deep value to tactical intraday factor timers arbitrageurs shorting experts. [--]. HF: dunno maybe 200PMs maybe a bit more just in L/S equities. In total embarrassingly many. And I mean seeing their actual true pnl not the audited track record. End of flex. My findings: the *only* retail investor I would have given my own money to was essentially a professional no huge social media profile teaching" [X Link](https://x.com/anyuser/status/1943641442146013264) 2025-07-11T12:00Z 51.7K followers, 125.1K engagements "Finished this didn't read the causality chapters and still recommend it. Available online for free" [X Link](https://x.com/anyuser/status/1945458063022191091) 2025-07-16T12:18Z 51.7K followers, 69.8K engagements "Now reading select chapters of this (also free online):" [X Link](https://x.com/anyuser/status/1945459978254586179) 2025-07-16T12:26Z 51.7K followers, 33K engagements "Every fundamental portfolio manager says they have a Sharpe of [---] Every systematic portfolio manager says they have a PnL of $50m/yr Every social scientist says they have a significance level of 5% Every sinner says they'll barely make it to heaven" [X Link](https://x.com/anyuser/status/1950173441291624557) 2025-07-29T12:35Z 51.7K followers, 47.9K engagements "Time for a sober but hopefully hopeful possibly short π§΅. Every year at this time of the year I am contacted by several interns across a swat of HF/prop trading firms who were just told sometimes informally that they will not receive return offers. 1/" [X Link](https://x.com/anyuser/status/1952563054866211141) 2025-08-05T02:51Z 51.7K followers, 107.4K engagements "Dude Interesting convo last night at a house party. A low level employee at a large AI company (not saying which one) was there and the conversation moved to these insane salaries that the top guys are accepting to go to META and even more surprisingly the guys that are turning down Interesting convo last night at a house party. A low level employee at a large AI company (not saying which one) was there and the conversation moved to these insane salaries that the top guys are accepting to go to META and even more surprisingly the guys that are turning down" [X Link](https://x.com/anyuser/status/1957215612826271799) 2025-08-17T22:59Z 51.7K followers, 96.6K engagements "Yesterday I was talking to smart high-schooler interested in finance and the topic of college major came up (he was undecided between math and physics). My preference for finance jobs is to hire applied mathematicians/physicists over pure math major. Simple example: PDEs. 1/" [X Link](https://x.com/anyuser/status/1962137777010512169) 2025-08-31T12:57Z 51.7K followers, 95.5K engagements "Now do revenue per employee" [X Link](https://x.com/anyuser/status/1963435180699353473) 2025-09-04T02:53Z 51.7K followers, 822.4K engagements "I just woke up and the first thought I had even before kissing my wife even before realizing I needed to go the bathroom so badly was I have to re-read that old survey by Gabaix on power laws in economics. It was good. Anyway link below. Open access. But life is really mysterious and wonderful in its small ways. And that was the second thought of the day. Happy Saturday" [X Link](https://x.com/anyuser/status/1964285327943881201) 2025-09-06T11:11Z 51.7K followers, 73.4K engagements "In the near future basic concentration of measure will be taught in undergraduate probability. And concentration of probability for matrices in masters-level courses. https://arxiv.org/abs/1501.01571 https://arxiv.org/abs/1501.01571" [X Link](https://x.com/anyuser/status/1965871442891001966) 2025-09-10T20:14Z 51.7K followers, 36K engagements "Here are the slides I used at MIT today for the talk "Buy-Side Equity Quant Analysis: Tools and Open Problems". The talk is very high-level and reuses some problems I described at a Fordham's conference last year. There is little new but. ok there's little new on this topic in my brain. https://tinyurl.com/bam-mit-2025 https://tinyurl.com/bam-mit-2025" [X Link](https://x.com/anyuser/status/1966342204223275354) 2025-09-12T03:24Z 51.7K followers, 52.7K engagements "A significant fraction say between [--] and 50% of quant researchers in pods have really difficult stressful miserable jobs. Some of it is that edge is hard to find (and finding it and then maintaining it requires a mix of skills and smarts); some of it is psychological make-up that is unsuited to the job (i.e. there are ppl who could do a good job but just can't bear the stress); and some of it is caused by poor managers and unstable organizations. I am thinking about this because I have been hearing from these people more in recent times. And I have two thoughts. For people entering the field" [X Link](https://x.com/anyuser/status/1966982025963073565) 2025-09-13T21:47Z 51.7K followers, 138.9K engagements "A colleague asked me for a good Bayesian stat reference. I recommended Gelman's books esp. Regression and Other Stories. But I found from Gelman's own blog (yesterday's post) that BDA3 is freely available. Below" [X Link](https://x.com/anyuser/status/1967253405866602791) 2025-09-14T15:45Z 51.7K followers, 52.6K engagements "I have been reading this old book and its excellent. I had learned Kernel methods/Gaussian Processes via Rasmussen-Williams (also withstanding the test of time) but this is better. Ben Recht was writing recently something like nobody cares about kernel methods these days. Sadly true. I dont think kids care much about this stuff these days. Why study it then Three reasons from me: [--]. It generalizes linear models to the fullest extent and for free giving you insights into ridge Nadaraya-Watson attention mechanisms. Read recent and recurrent threads of @docmilanfar on this. [--]. It is among the" [X Link](https://x.com/anyuser/status/1975526834180685847) 2025-10-07T11:41Z 51.7K followers, 44.2K engagements "Its a good question. I spend maybe 1hr/week talking to random PhD students chatting on zoom about this topic plus messages. I care about those people because I was them. My experience: I discovered Operations Research after graduating college and applied for a PhD abroad as a total outsider. I was a 2nd year PhD student when an MBA student told me I want to work for a hedge fund. It was the first time I heard the term. When a recruiter emailed me about a job at HRT I googled it and found the magic of Hormone Replacement Therapy. All the jobs were long-shot unsolicited calls from recruiters." [X Link](https://x.com/anyuser/status/1983866971218214964) 2025-10-30T12:01Z 51.7K followers, 73.1K engagements "There was some talk about the Prediction Company and Complexity Scientists so I posted some notes on "The Predictors". Link in reply" [X Link](https://x.com/__paleologo/status/1986935862546895086) 2025-11-07T23:16Z 51.7K followers, 19.8K engagements "855 books on architecture [---] books on/by Wittgenstein Could sew clothes And disassemble/reassemble a car engine Had a deeply intense love life His novels are some the absolute best in the English language Cormac McCarthy is one of the most interesting people ever Terrifically amusing @SmithsonianMag story from last month about Cormac Macarthy's absolutely gigantic personal library which overwhelmed scholars are slowly going through. https://t.co/X0h6xB6DvK Terrifically amusing @SmithsonianMag story from last month about Cormac Macarthy's absolutely gigantic personal library which overwhelmed" [X Link](https://x.com/anyuser/status/1987139665451749595) 2025-11-08T12:46Z 51.7K followers, 38.8K engagements "McCarthy read [---] books to research Blood Meridian. And it sold [----] copies when it came out. Life is a linear diffusion with drift. Looks like brownian motion at short time scales. But it's a straight line when you zoom out" [X Link](https://x.com/anyuser/status/1987185869153845428) 2025-11-08T15:50Z 51.7K followers, 71.6K engagements "I am afraid that the LeCun-Wang swap was not a good trade. When we sat down with @alexandr_wang at Meta Connect [----] he shared his advice for young people: If youre [--] right now you should spend all your time vibe coding. This is the Bill Gates Mark Zuckerberg moment. The people who grow up with these tools will have an immense https://t.co/fwyvUA88lJ When we sat down with @alexandr_wang at Meta Connect [----] he shared his advice for young people: If youre [--] right now you should spend all your time vibe coding. This is the Bill Gates Mark Zuckerberg moment. The people who grow up with these" [X Link](https://x.com/anyuser/status/1988459950859763786) 2025-11-12T04:12Z 51.7K followers, 130.4K engagements "For those intrigued by the tweet below: [--]. Replace Economics with discipline of your choice and you have a critique of everything. You can add and it is a social construct for good measure. [--]. Also you likely are in your mid 30s. It is time to graduate high school" [X Link](https://x.com/anyuser/status/1989217375565041752) 2025-11-14T06:22Z 51.7K followers, 94.4K engagements "happiness is easy https://t.co/Lcj3TcV1vp https://t.co/Lcj3TcV1vp" [X Link](https://x.com/anyuser/status/1989714153062236315) 2025-11-15T15:16Z 51.7K followers, 36.3K engagements Limited data mode. Full metrics available with subscription: lunarcrush.com/pricing
@__paleologo Gappy (Giuseppe Paleologo)There is no information about Gappy (Giuseppe Paleologo) in the provided tweets. The tweets appear to be discussing various topics, including economists, public intellectuals, and social media trends, but do not mention Gappy. As a result, there is no summary to provide about current events related to Gappy.
Social category influence technology brands #5923 finance 10.17% travel destinations 5.08% countries 4.24% social networks 3.39% stocks #942 luxury brands 0.85% automotive brands 0.85% financial services 0.85% celebrities 0.85%
Social topic influence in the 10.17%, book 10.17%, i am 8.47%, books 5.93%, business #1550, the most 4.24%, math 4.24%, the first 4.24%, ai 3.39%, the world #2618
Top accounts mentioned or mentioned by @alxvarfolomiyev @f4stsc0pe @jbsdx5 @dogredgogles @kevin97642887 @paleologo @macrocephalopod @ryxcommar @petarjovovic3 @lossexp @bennpeifert @w98ab @riemannzeta @number_pizza111 @ben_golub @xianzhongreturn @chetaslua @umassecon @iowahawkblog @bengolub
Top assets mentioned IBM (IBM) Alphabet Inc Class A (GOOGL)
Top posts by engagements in the last [--] hours
"Just this week I have listened to a podcast where the author (CS prof at U Toronto) predicted the end of democracy. The Google X business manager predicting the end of capitalism. Uncountable people predicting the end of white collar jobs blue collar jobs extermination of the rich. A number of them has respectable jobs. The population of forecasters is growing at an alarming rate. It is a very understandable reaction to uncertainty. But it doesn't make a lot of sense to predict the future when one a) has not practiced long-term forecasting; b) has not tracked/calibrated their performance; c)"
X Link 2026-02-08T05:11Z 51.7K followers, 17.6K engagements
"Another instance in the wild of the Bullshit Asymmetry Principle. The amount of energy needed to refute bullshit is an order of magnitude bigger than that needed to produce it. We are going to live with the $140k poverty line for the next [--] years. On the positive side you can bet against bullshitters. In the long run the market equilibrates. Green writes a piece saying 140k is the new poverty line. Its thoroughly debunked. And a legion of the credulous sycophants who dig the vibe ex post redefine poverty to ennui (the piece never wouldve gotten traction without the 140k poverty thing which"
X Link 2025-12-01T18:20Z 51.6K followers, 98.9K engagements
"-It has no reverse search. -Editor is primitive. -The voice commands are ineffective. -Can I turn on heavy thinking with a Pro account Seems not. -Missing the flexibility of Claude Code to generate charts code tests text in one fell swoop. -Better than Overleaf for writing support but worse ad an environment. Prism is now available on the web to anyone with a ChatGPT personal account. Coming soon to ChatGPT Business Team Enterprise and Education plans. https://t.co/r2lVbNAT0R Prism is now available on the web to anyone with a ChatGPT personal account. Coming soon to ChatGPT Business Team"
X Link 2026-01-28T04:56Z 51.5K followers, 32K engagements
"Within business (L/S eq systematic macro etc) and (less well) across businesses revenue per investment professional is a coarse measure of performance but ok. Above $10M/employee: very good. $5-10M: okish. $5M: shut down that business before it shuts down the firm. That's assuming capex etc. are not abnormally high like in some systematic. If not the bar is higher. Now do revenue per employee https://t.co/mJcdsGXYaR Now do revenue per employee https://t.co/mJcdsGXYaR"
X Link 2026-01-29T05:45Z 51.5K followers, 58.7K engagements
"There was an interesting podcast episode with a sr Anthropic researcher (Sholto Douglas on MAD podcast Not completely sure) where he noticed how later smaller models (he was talking about Sonnet) often outperform earlier smaller ones. Distillation parameter architecture. It seems all of them contribute. It's great news for the rest of us users. I dream of a competitive on-device coding assistant. Maybe it's coming. New Claude model update(s) are coming The upcoming "Fennec" model (Sonnet update) seems to be better than Opus [---] according to tests from @chetaslua https://t.co/jBvGRj3NfE New"
X Link 2026-02-01T14:52Z 51.5K followers, 23.2K engagements
"I like LA and Chicago very much. I like Denver. Miami is like Naples managed by Spanish speakers so it suits me. I enjoyed Houstonians on a massive scale. Gimme Toronto or Montreal any time and all Canadians. Therefore its only fair that I have been living in NY (most overrated city in the solar system) for [--] years. Have a good day. https://twitter.com/i/web/status/2019390675112886642 https://twitter.com/i/web/status/2019390675112886642"
X Link 2026-02-05T12:40Z 51.6K followers, 18.4K engagements
"I will take the other side of Bowles (or of Weber) any day. And whenever somebody invokes common sense or moral intuition as self-evident or invocations of sociopathy my spider-sense tickles. See you all tonight at the Caviar Russe. In economics we cannot say that the marginal utility of providing milk to kids is more than that of a rich person enjoying an extra bid of caviar. Isn't this sociopathic This lack of morality is designed to prevent redistribution. Sam Bowles @UMassEcon In economics we cannot say that the marginal utility of providing milk to kids is more than that of a rich person"
X Link 2026-02-05T14:51Z 51.6K followers, 11.6K engagements
"My mini rel-value pairs: Overrated: Tokyo. Underrated: Osaka. Overrated: Barcelona. Underrated: Madrid. Overrated: Florence. Underrated: Naples. Overrated: Cairo. Underrated: Alexandria. Overrated: New York. Underrated: Houston. Paris: rightly rated. Kyoto. Also Berlin. I dont know that many cities though. https://twitter.com/i/web/status/2019474873018376503 https://twitter.com/i/web/status/2019474873018376503"
X Link 2026-02-05T18:15Z 51.5K followers, [---] engagements
"@JBsdx5 @dogredgogles Rome overrated in yer dreams"
X Link 2026-02-05T18:30Z 51.5K followers, [--] engagements
"@macrocephalopod I don't think I could derive Black-Scholes today but probably would not hire anyone who could. Matrix inversion and quicksort are very fair questions"
X Link 2026-02-07T00:27Z 51.6K followers, 17.2K engagements
"@f4stsc0pe Once at a previous hedge fund I saw code where the author (a PhD in Statistics from Berkley) inverted the Gramian and after 10+ years it still triggers me"
X Link 2026-02-07T13:26Z 51.6K followers, [----] engagements
"J.G.: add this to all dashboards ASAP. A crazy mental trick is to map complex concepts onto regions the brain is primed for (Chernoff). The most hilarious example Ive seen ismultivariate portfolio data on cartoon fish. Analysts would thus look for the "weird fish" in the aquarium. https://t.co/2AyFClFK1t A crazy mental trick is to map complex concepts onto regions the brain is primed for (Chernoff). The most hilarious example Ive seen ismultivariate portfolio data on cartoon fish. Analysts would thus look for the "weird fish" in the aquarium. https://t.co/2AyFClFK1t"
X Link 2026-02-07T13:30Z 51.6K followers, 39.5K engagements
"@iowahawkblog DAVID Volskwagen Group famously owns Lamborghini"
X Link 2026-02-07T15:04Z 51.6K followers, [--] engagements
"@ryxcommar @PetarJovovic3 @f4stsc0pe (shorter) Trefethen and Bau: https://www.johndcook.com/blog/2010/01/19/dont-invert-that-matrix/ https://gregorygundersen.com/blog/2020/12/09/matrix-inversion/ https://www.johndcook.com/blog/2010/01/19/dont-invert-that-matrix/ https://gregorygundersen.com/blog/2020/12/09/matrix-inversion/"
X Link 2026-02-07T15:42Z 51.6K followers, 16.9K engagements
"@LossExp There are projects like Good Judgment etc. I dont follow them closely. I like that Scott Alexander makes/made predictions with probs and then scored them a year later. Obvious books I read are Superforecasters and The Art of the Long View"
X Link 2026-02-08T07:06Z 51.6K followers, [---] engagements
"@kevin97642887 Like"
X Link 2026-02-08T07:08Z 51.6K followers, [---] engagements
"@ben_golub @RefineInk In any case refine made me realize I have a long way to learn how to ask claude code better questions. They did make mistakes but ultimately I instructed them poorly"
X Link 2026-02-08T14:23Z 51.6K followers, [---] engagements
"Happy birthday wherever you are"
X Link 2025-03-21T11:53Z 51.7K followers, 178.4K engagements
"I am positively annoyed by most of X AI takes recently (so I don't visit) but I can still vent right How is this even a headline on the WSJ I am seriously thinking of leaving civilization for a while to become a hunter-gathererer with the San of Botswana"
X Link 2026-02-12T19:23Z 51.7K followers, [----] engagements
"Which book title is better a) The Elements of Fundamental Investing b) A Grimoire of Fundamental Investing a b I suggest in comments both work a b I suggest in comments both work"
X Link 2026-02-13T03:56Z 51.7K followers, [----] engagements
"We went from LLMs can't do math better than a CAS to LLMs found a better bound in an optimization paper to LLMs solve Erds problems because they learned them from their corpus to LLMs solve a new Erds problem from scratch to LLMs are helping address the Navier-Stokes Clay problem. All of this in less than two years. This is not to say that we'll give the Fields medal to AI before [----]. Just we should not make point forecasts. https://twitter.com/i/web/status/2010108439599690067 https://twitter.com/i/web/status/2010108439599690067"
X Link 2026-01-10T21:56Z 51.7K followers, 64.1K engagements
"Trivia night Congratulations to the Pineapple Pizza team"
X Link 2026-02-13T20:55Z 51.7K followers, [----] engagements
"Once in a while I post some math & science blogs or sites I like. I also have a gazillion bookmarks which I have to parse at some point. https://claude.com/resources/tutorials https://lilianweng.github.io/ https://francisbach.com/ https://www.ethanepperly.com/ https://terrytao.wordpress.com/ https://www.argmin.net/ https://djalil.chafai.net/blog/ https://www.quantamagazine.org/ https://www.johndcook.com/blog/ @__paleologo @ryxcommar @PetarJovovic3 @f4stsc0pe I will wish you get everything you ever wanted if you can drop your rss feed(even a few of them would work) for math blogs pls pls pls"
X Link 2026-02-07T19:12Z 51.7K followers, 29.2K engagements
"A minor lesson I learned. Hudson River Trading has large cafeterias in all of its centers. And an abnormal amount of communal spaces (alcoves booths meeting room). You sit for lunch and talk to strangers or old friends. I estimate that premier real estate space (and the chef-served lunches) to cost $20-30m/yr. It is a 100x return/yr. Eating together is how you get people to lower their defenses talk trust others collaborate create alliances since the Pleistocene. And the lesson is that you can win at technology by going back to very simplest ancestral things. Sharing 8+ meals a week with"
X Link 2026-02-13T23:52Z 51.7K followers, 292.7K engagements
"Autographed copies of my book Elements of Quantitative Investing will be available exclusively to guests at Numerai'sconference January 30th in San Francisco. P.S.: I mildly customized the original poster for clicks. Good job grok. https://luma.com/numercon2026 https://luma.com/numercon2026"
X Link 2026-01-12T21:46Z 51.6K followers, [----] engagements
"In the Jackson Hole office we have skis Milo and math. And bbg. Not much else needed in life"
X Link 2026-01-16T19:28Z 51.6K followers, 95.4K engagements
"A surprising number of AI/ML opining on the future of capitalism and democracy. These people have no more cognitive edge (possibly less) than my doorman at work. Definitely less edge than academic economists"
X Link 2026-02-08T00:24Z 51.6K followers, [----] engagements
"Department of Large Predictions spherical rotations edition. From Greece to Rome to Britain to America. From the Massachusetts Bay Colony to the Wild West to San Francisco. The technological frontier kept moving West till it reached the Pacific Ocean. But if the wealth seizures destroy Silicon Valley as they are intended to do and From Greece to Rome to Britain to America. From the Massachusetts Bay Colony to the Wild West to San Francisco. The technological frontier kept moving West till it reached the Pacific Ocean. But if the wealth seizures destroy Silicon Valley as they are intended to"
X Link 2026-02-08T13:17Z 51.6K followers, 10.9K engagements
"I did not realize it is the Super Ball today"
X Link 2026-02-09T01:21Z 51.7K followers, [----] engagements
"There was an excellent satirical magazine associated to the then Italian Communist Party who came up with a fantastic article whose title was "Mickey Mouse f*ks" based on a story that ran in the Italian "Mickey Mouse" weekly magazine (which was by the way also excellent). Everyone in Italy assumed that Mickey was gay and that Minnie was a beard so this was a shock for many. https://twitter.com/i/web/status/2020985315981136103 https://twitter.com/i/web/status/2020985315981136103"
X Link 2026-02-09T22:17Z 51.7K followers, [----] engagements
"An interview with Dmitry Balyasny. The interviewer is [--] and asks good questions. Theres also an older interview of Dmitry with Rubinstein that is informative"
X Link 2026-02-11T11:53Z 51.7K followers, 27.1K engagements
"So we went from software will eat the world to software will eat itself @pmarca"
X Link 2026-02-11T19:33Z 51.7K followers, [----] engagements
"I am not sure this satire (more efficient government) but I hope it happens. And I am contrarian-long Europe. Billionaires are sick of the California government They're moving to somewhere with: - More efficient government - Better lifestyle - Warmer weather That's exactly why Italy is about to become the business capitol of the world https://t.co/aLduUTyt12 Billionaires are sick of the California government They're moving to somewhere with: - More efficient government - Better lifestyle - Warmer weather That's exactly why Italy is about to become the business capitol of the world"
X Link 2026-02-13T23:03Z 51.7K followers, 15.6K engagements
"Another little story. Until the early 90s IBM Research in Yorktown served free lunch. The chef was named Jean-Jacques. I recall Mandelbrot having lunch with his friends every day. Alan Hoffman Charlie Bennett and many other cool dudes were there and you could just eat with them. Then IBM had a major crisis. They laid off 40% of the workforce. They started charging for lunch every day except Monday. Then they laid off Jean-Jacques and charged every day but coffee was free. Then coffee was free only Mondays. Still Jean-Jacques catered at my wedding. We all knew each other because we all ate"
X Link 2026-02-14T00:04Z 51.7K followers, 124.8K engagements
"Which brings me to the last chapter of the story which is my team and my firm at large. Every time there is a PM or a QR offsite its always the same story. People come for the technical talks and then stay for the dinners. What they really cherish though its the dinners. Because everyone crave connection. https://x.com/__paleologo/status/2022414278058467451s=46&t=0766N4ICwAiHDpMyUQG9Yw Another little story. Until the early 90s IBM Research in Yorktown served free lunch. The chef was named Jean-Jacques. I recall Mandelbrot having lunch with his friends every day. Alan Hoffman Charlie Bennett"
X Link 2026-02-14T00:23Z 51.7K followers, 14.4K engagements
"This is self-recommending. https://www.youtube.com/@almostsure/videos https://www.youtube.com/@almostsure/videos"
X Link 2024-11-29T18:49Z 51.6K followers, 13.2K engagements
"Thanks for the shoutout. Ministory: I learned about Moontower from a derivs risk manager I hired at HRT ( hi Jessie) and I been a reader ever since. Sunday Moontower #282 πThe GFC from a quant's perspective π How I understand the Black-Scholes formula refs: @__paleologo @justinskycak @tracewoodgrains https://t.co/E9KXCUx9KG Sunday Moontower #282 πThe GFC from a quant's perspective π How I understand the Black-Scholes formula refs: @__paleologo @justinskycak @tracewoodgrains https://t.co/E9KXCUx9KG"
X Link 2025-09-07T17:13Z 51.6K followers, 84.7K engagements
"Of interest (maybe). I was asked by a candidate portfolio manager what are the qualities I consider essential to be a good PM. It's a good question. There's the analytical answer that goes over individual qualities based on experience analysis of past transcripts etc. which is important and that of course doesn't belong in X. But there is also the synthetic answer. Jim Simons said over and over that he had good taste in selecting people (which did not prevent him from cycling through Baum Ax Cardona etc. before getting to Berlekamp); and that the people he hired had also good taste. The"
X Link 2025-10-19T14:09Z 51.6K followers, 132.7K engagements
"Apologies if this is too obvious. Two strategies are running for one year. The first half and the second half of the year they are allocated possibly different $volatilities. The first one receives ($50m $50m). The second one receives ($30m $65m). What is the relationship between the strategies annualized volatilities"
X Link 2025-10-29T00:46Z 51.6K followers, 66.4K engagements
"https://open.substack.com/pub/byfire/p/book-review-the-predictors https://open.substack.com/pub/byfire/p/book-review-the-predictors"
X Link 2025-11-07T23:16Z 51.6K followers, 42.1K engagements
"Say you toss a coin [---] times. You want to report a "good" metric describing the biasedness of the coin. % heads will do. Reporting the longest streak of tails is not informative. In fact it can be misleading. And yet that is what most portfolio manager tearsheets do"
X Link 2025-11-17T12:42Z 51.6K followers, 68.2K engagements
"I don't believe I have posted anything remotely practical in one year. I think @macrocephalopod has slowed down too. @moreproteinbars and @QuiteMidlife outdo each other posting food pics with occasional war stories; @bennpeifert also really got tired and busy. As for @Gingfacekillah his books are where it's at. @0xfdf went silent. @KrisAbdelmessih at least has a good substack. And then "traders" (on those lists) on X are perhaps too practical. As for actual professional traders and PMs all lurkers: not one of the those I personally know posts. Maybe we're all worried about the coming of"
X Link 2025-09-07T21:28Z 51.7K followers, 186.3K engagements
"The more I use Claude and ChatGPT the more I am convinced we are not even close to AGI. Intelligence may be a gigabig Markov Chain. Just not these Markov Chains"
X Link 2024-06-21T13:57Z 51.7K followers, 61.1K engagements
"MAJOR DROP: "The Element of Quantitative Investing" latest book draft. Links at the end of the π§΅. Short introduction: I am writing a book on quantitative investing for Wiley (April 2025). It's the book I wanted to write all along but I strayed and wrote another book first"
X Link 2024-06-22T03:27Z 51.7K followers, 83.2K engagements
"This paper will make all your hedging dreams come true. Implement it and in the event that it does thank me later. https://arxiv.org/abs/2207.00932 https://arxiv.org/abs/2207.00932"
X Link 2024-06-28T15:00Z 51.7K followers, 65.1K engagements
"Telegram has basically 1B users [--] engineers less than [--] employees. Fermi's lab in Rome discovered one of the four fundamental forces. One adult and [--] barely twentysomethings. Rentech XTX I guess all their engineers and researchers total less than [---] ppl. There is a lot that can be accomplished with a groups of talented individuals working together. Seek excellent passionate people. Seek selfless collaboration. Add integrity (to avoid the FTX edge cases) and the sky is the literal limit"
X Link 2024-07-25T17:39Z 51.7K followers, 71K engagements
"I have compiled all my book recommendations (up to now) in a convenient document With pictures links and one-liner explanations. Enjoy. https://www.dropbox.com/scl/fi/qla85rge5nugfot45damz/gappycanon.pdfrlkey=kau4ct3kz3vmu2ptlg6bnce4w&st=4b9dhne9&dl=0 https://www.dropbox.com/scl/fi/qla85rge5nugfot45damz/gappycanon.pdfrlkey=kau4ct3kz3vmu2ptlg6bnce4w&st=4b9dhne9&dl=0"
X Link 2024-08-14T21:27Z 51.7K followers, 187.5K engagements
"One idea/aspiration I have is to write a "Little Book of Portfolio Management" formatted like--and in the spirit of--"The Little Book of Deep Learning" by Fleuret. But even shorter than that. Half the size of Advanced Portfolio Management and more practical. And then try to put it on the phone of every portfolio manager in the world for free. [---] pages of this text and figure density:"
X Link 2024-08-20T01:43Z 51.7K followers, 40.8K engagements
"OK thats what Id call a good email from a total stranger"
X Link 2024-08-28T12:52Z 51.7K followers, 463.2K engagements
"@createoperate "Can you help me grow my lantanas Or get a job as a quantitative trader""
X Link 2024-08-28T19:57Z 51.7K followers, 17.4K engagements
"Here are some recommended books on probabilistic thinking and decision making in a broad sense. Not in a specific order: [--]. The signal and the noise by N. Silver [--]. Thinking in bets by A. Duke [--]. Quit by A. Duke [--]. The model thinker by S. Page [--]. The scout mindset by J. Galef [--]. The book of Why by J. Pearl [--]. Superforecasters by P. Tetlock [--]. Risk savvy by G. Gigerenzer [--]. Calculated risk by G. Gigerenzer [--]. Thinking fast and slow by D. Kahneman [--]. The drunkard's walk by L. Mlodinow Think of it there are not many good books about probabilistic thinking: my beloved Gigerenzer maybe Nate"
X Link 2024-09-22T00:01Z 51.7K followers, 134.6K engagements
"Consistent with log utility"
X Link 2024-10-04T00:24Z 51.7K followers, 36.6K engagements
"I picked up this book again. I know the first author (from MLP). I think its underrated. My good morning to you"
X Link 2024-10-31T13:05Z 51.7K followers, 37.1K engagements
"This is in a way a practical book about the Kelly criterion. I bought two copies by mistake. If were having lunch and you are interested remind me to bring you the spare copy. Haghani btw is the Haghani. With Larry Hilibrand the real on-the-ground PM at LTCM"
X Link 2024-10-31T13:15Z 51.7K followers, 103.7K engagements
"Lets say pessimistically 30m seconds left. Begin"
X Link 2024-11-04T23:46Z 51.7K followers, 198.4K engagements
"One of the three tools of active risk management is hedging. In politics you donate to both parties. Even the poster boy of Bad Risk Management SBF did it. Yet if I look at Musks actions (the [----] rocket launch Trumps support Twitter purchase) he does absolutely none of it. Zero. And very concentrated bets. Its a bit unintuitive. Do this enough over time and you should achieve spectacular financial ruin. But of course if you always win you may end up Emperor of the Solar System by [--]. And why do people always exclude the possibility of a deal with the devil. It explains everything"
X Link 2024-11-07T11:32Z 51.7K followers, 62.5K engagements
"CUSUM is an algorithm for change-point detection. It's kind of magical. Here is a financial application which is very important in itself to showcase its magic. A short informal π§΅ to be rewritten in a more formal technical note. Ready let's go. 1/"
X Link 2024-11-08T04:43Z 51.7K followers, 104.8K engagements
"The paper to end all papers. Multiple testing did the heavy lifting. We needed the post-doc to write the paper and fix the LaTeX tables. Now our job is done"
X Link 2024-12-17T17:19Z 51.7K followers, 125.1K engagements
"Boys use AI. Men use linear regression. The year is [----]. AI has taken over the earth along with the [--] nearest earth-like planets. Kwants are still studying linear regression. The year is [----]. AI has taken over the earth along with the [--] nearest earth-like planets. Kwants are still studying linear regression"
X Link 2024-12-24T22:46Z 51.7K followers, 61.7K engagements
"Wanted to say that Im thankful for: - a healthy family - a job I love - living in a great town - linear regression Wanted to say that Im thankful for: - a healthy family - a job I love - living in a great town - all the great mutuals I have on Twitter Wanted to say that Im thankful for: - a healthy family - a job I love - living in a great town - all the great mutuals I have on Twitter"
X Link 2024-12-25T01:48Z 51.7K followers, 43K engagements
"I didn't appreciate this game the first time I tried to read it (a long time ago). But maybe I should give it another try. Has anyone read it"
X Link 2024-12-29T00:33Z 51.7K followers, 84.7K engagements
"Long morning thought: 25+ yrs ago I chose as a PhD major Operations Research/Management Science and got a MS in Statistics as a byproduct of courses taken. Somehow it worked for me. But if I had to choose a PhD field today I would not even consider OR/MgmtSci/Stats/EE. If you want to work in Statistics don't get a PhD in Statistics. If you want to work in applied math (of which OR is a special case) don't get a PhD in Applied Math or OR. OR Statistics Applied Math have been taken over and made irrelevant and exist as academic vestigial outposts. OR in particular has become kind of a sad joke."
X Link 2024-12-29T16:08Z 51.7K followers, 127.8K engagements
"End of day consolation. I just want to say that if you do any research 95% of what you try wont work and that is ok. Dont be sad. You are in the business of heavy tails. New Yorker cartoonists great physicists famous poets and degen gamblers are your brethren. Not dentists and line order cooks"
X Link 2025-01-02T04:38Z 51.7K followers, 52.1K engagements
"Elements of Dimensionality Reduction and Manifold Learning. Long lots of interesting topics from Johnson-Lindenstrauss to Kernel methods to metric embeddings to autoencoders. I am attaching sections of the TOC"
X Link 2025-01-11T22:54Z 51.7K followers, 39.7K engagements
"A meandering π§΅ on heavy tails. I usually recommend "Fundamentals of Heavy Tails" by Nair @AdamWierman and @BertZwart1 as an introduction to Heavy Tailed phenomena: 1/8"
X Link 2025-01-15T02:37Z 51.7K followers, 87.4K engagements
"Longer quote: Nick Patterson formerly with Renaissance Technologies: ".the most important thing to do in data analysis is to do the simple things right. So here's a kind of non-secret about what we did at Renaissance: in my opinion our most important statistical tool was simple regression Nick Patterson formerly with Renaissance Technologies: ".the most important thing to do in data analysis is to do the simple things right. So here's a kind of non-secret about what we did at Renaissance: in my opinion our most important statistical tool was simple regression"
X Link 2025-01-15T08:09Z 51.7K followers, 232.9K engagements
"I usually recommend Harrells Regression Strategies Gelman et als Regression and Other Stories and Wassermans All off Statistics vol [--]. And Bruce Hansens Prob and Stats for Economists. I wonder if people reading this have other recs. Can please post in reply Id sincerely appreciate. @__paleologo Any book recommendations on linear regression @__paleologo Any book recommendations on linear regression"
X Link 2025-01-16T01:40Z 51.7K followers, 100.8K engagements
"Crypto. How it started. How is it going"
X Link 2025-01-19T23:07Z 51.7K followers, 34.9K engagements
"It seems (until conspiracy theorists are proven right) that Deepseek was developed by a HF with $7B AUM big but very far from the bigger ones and very very far from AMZN/OAI/META-level resources; and a fund which (like all HFs) has had its share of challenges and losses etc. To me thats a humbling/exciting lesson in showing a) what is possible; b) that raw resources are not everything and sometimes resource scarcity can be a blessing; c) that many large HFs and prop trading firms given their own current resources can achieve much more. TFW its 7:19AM on a Saturday in NYC. What are you doing"
X Link 2025-01-25T12:19Z 51.7K followers, 48.9K engagements
"An inordinate number of friends in finance buy restaurants. And I am. ok. But why my friend WHY Its a terrible investment its not even fun. Is there an explanation They have none"
X Link 2025-02-12T00:49Z 51.7K followers, 116.1K engagements
"I have had so many formal & informal conversations that go like this: PM: I have a Sharpe Ratio 2+ and want a drawdown limit of 1+ annual $vol Me: Wait with that Sharpe you dont need such a wide limit. PM: Well I dont have that Sharpe all the time. Me: Indeed I am also vegetarian in between meals. PM feels seen. Hilarity ensues. And that was the financial dad humor that was. Have a good day"
X Link 2025-02-14T15:02Z 51.7K followers, 56.4K engagements
"Looking for a man in finance Sharpe two no drawdowns blue eyes"
X Link 2025-02-14T19:08Z 51.7K followers, 36.7K engagements
"Basic hedge fund economics π§΅. N.B.: [--]. for educational purposes only and I will keep it super-simple [--]. ofc personal views [--]. No soliciting I am not coming to defend hedge funds just to explain some basics. And I am not going to answer replies on the Current Thing. 1/"
X Link 2025-03-01T17:40Z 51.7K followers, 193.5K engagements
"Underrated & rarely talked about"
X Link 2025-03-02T14:13Z 51.7K followers, 182.4K engagements
"Also underrated & rarely talked about P.S.: I don't post about competitors as a comms rule but I think I get an exception here. Underrated & rarely talked about https://t.co/RTzfFDfc74 Underrated & rarely talked about https://t.co/RTzfFDfc74"
X Link 2025-03-02T16:22Z 51.7K followers, 132.8K engagements
"@JayAndelle0 Divine Comedy Canto XXVI https://digitaldante.columbia.edu/dante/divine-comedy/inferno/inferno-26/ https://digitaldante.columbia.edu/dante/divine-comedy/inferno/inferno-26/"
X Link 2025-03-15T00:03Z 51.7K followers, 54.3K engagements
"A few days ago I gave a talk at Columbia's conference on "The Future of Portfolio Management". Title: "Simpler (portfolio) heuristics that make us smarter". Below is the link to the slides. A short intro. 1/"
X Link 2025-03-22T15:36Z 51.7K followers, 69.5K engagements
"Reading a WSJ article on the US stock market being overvalued. Arguments: - quotes random Irish investor living in the Netherlands - quotes Slovakian trader living in Miami (admittedly good-looking) - mentions aggregate P/E ratios of various indices - quotes random American living in Germany who is diversifying - but a random Australian investor likes US stocks And that was the whole article. On the WSJ. On the @WSJ To the financial editor of the WSJ: do you remember the last sentence of the Tractatus Logico-Philosophicus Right. That one"
X Link 2025-03-23T19:19Z 51.7K followers, 62.8K engagements
"I am revisiting linear regression to prepare a small teaching module (semi-advanced) on it. The following page is I think useful. It unifies many disparate tests of hypothesis (e.g. linear regression t-stat ANOVA etc) in a single framework. https://lindeloev.github.io/tests-as-linear/ https://lindeloev.github.io/tests-as-linear/"
X Link 2025-03-24T14:07Z 51.7K followers, 39.4K engagements
"I did not realized that Learning Theory from First Principles has been published. It is still freely available. I really like this book for its choice of topics. It covers everything that matters"
X Link 2025-03-27T11:59Z 51.7K followers, 278.3K engagements
"Yesterday I linked to a pretty dense book. Today: a 165-pp booklet formatted for iphones; The little book of deep learning by F. Fleuret. To the point. And you can read it during bathroom breaks I did not realized that Learning Theory from First Principles has been published. It is still freely available. I really like this book for its choice of topics. It covers everything that matters. https://t.co/dLUle3IUmb I did not realized that Learning Theory from First Principles has been published. It is still freely available. I really like this book for its choice of topics. It covers everything"
X Link 2025-03-28T11:06Z 51.7K followers, 58.2K engagements
"If we collide portfolio managers at very high speed do they emit alpha particles"
X Link 2025-04-24T21:58Z 51.7K followers, 37K engagements
"If I go on OnlyFans and do paid sessions on advanced linear regression wearing stilettos are you going to pay up #monetization"
X Link 2025-04-30T16:37Z 51.7K followers, 82K engagements
"Stanford videos (and interviews with the creators) of "14 Statistical Ideas that Changed the World". Lasso FDR Conformal Inference Boosting EM Bootstrap Gibbs Sampling GAMs. https://www.youtube.com/playlistlist=PLt_pNkbycxqahVksaNnjz3M6759xHIZ-r https://www.youtube.com/playlistlist=PLt_pNkbycxqahVksaNnjz3M6759xHIZ-r"
X Link 2025-05-02T11:39Z 51.7K followers, 66.9K engagements
"Are these the best film about Finance Margin Call The Big Short The smartest Guys in the Room Too Big to Fail The Wolf of Wall Street With the exception of TWOWS (which has no pretense of realism) they are all forgettable quite poorly researched movies. And the only one about HFs is The Big Short which is based on a Michael Lewis book so you know is fiction masquerading as facts"
X Link 2025-05-09T07:27Z 51.7K followers, 105.7K engagements
"This is a long semi-technical π§΅ on Tail Risk Hedging. It's unusual in the sense that I am posting it as I am trying to figure stuff out out of frustration. I find OPP (other people's posts) about Tail Risk Hedging a bit vague or confusing (exception: @bennpeifert). 1/"
X Link 2025-05-11T19:20Z 51.7K followers, 113.8K engagements
"Apology to New Yorkers. Chicago is still the most beautiful city in a few thousand miles"
X Link 2025-05-15T01:55Z 51.7K followers, 33.1K engagements
""Dive into Deep Learning" is a sprawling collection of code and theory (almost 1200pp) co-authored among others by Alex Smola. It is a very useful reference for specialized topics. https://arxiv.org/abs/2106.11342 https://arxiv.org/abs/2106.11342"
X Link 2025-05-17T13:39Z 51.7K followers, 46.5K engagements
"A rough but not bad metric for performance of a hf/prop trading firm is revenue/employee (not only investment team size). The very best are close to $20m/employee (but I don't know recent numbers for RenTech and TGS). On non-HFs OnlyFans is doing well. If I ever start a fund will call it OnlyHedges. Humble goal. Augurs well"
X Link 2025-05-25T18:28Z 51.7K followers, 94.6K engagements
"Find your own way of functioning. My mind is much slower than most of my colleagues minds and I discovered that when I was an undergraduate. I struggled for the first year and a half as an undergraduate at Caltech where I spent most of my subsequent career but I developed my own ways of learning things. Keeping records of what I was learning working things out in my own way and notebooks and so forth that enabled me to achieve despite having a slow working mind. So I advise students you find your own way and you have to experiment of mastering material and your own directions that you can be"
X Link 2025-06-01T19:00Z 51.7K followers, 36.3K engagements
""Why are you still on X" π"
X Link 2025-06-06T01:58Z 51.7K followers, 51.4K engagements
"There are not many books that describe strategies in some detail. Understandable. Even the simplest strategy is full of nuances and there is a massive difference between the median practitioner and the best one. This one comes to mind. At $18 on AMZN its a good deal"
X Link 2025-06-15T12:50Z 51.7K followers, 88.6K engagements
"Word for word @lexfridman s interview with Terry Tao is the most interesting concept-packed podcast interview ever recorded. The underlying theme is how to ask question as told by someone who has asked the questions"
X Link 2025-06-18T05:57Z 51.7K followers, 69.2K engagements
"I know more than one people who can guess betas and correlations visually. Once I met a person (not joking) who guessed the correlation using one data point. So I decided to train my eyes. You can do it too and influence people and win friends"
X Link 2025-06-19T11:06Z 51.7K followers, 108.5K engagements
"Kris: I believe you may be optimistic here. My sample: [--]. Retail: during my last gardening I called out to successful retail traders (I posted criteria) and spoke to [--] of them some very famous from deep value to tactical intraday factor timers arbitrageurs shorting experts. [--]. HF: dunno maybe 200PMs maybe a bit more just in L/S equities. In total embarrassingly many. And I mean seeing their actual true pnl not the audited track record. End of flex. My findings: the only retail investor I would have given my own money to was essentially a professional no huge social media profile teaching"
X Link 2025-07-11T12:00Z 51.7K followers, 125.1K engagements
"Finished this didn't read the causality chapters and still recommend it. Available online for free"
X Link 2025-07-16T12:18Z 51.7K followers, 69.8K engagements
"Now reading select chapters of this (also free online):"
X Link 2025-07-16T12:26Z 51.7K followers, 33K engagements
"Every fundamental portfolio manager says they have a Sharpe of [---] Every systematic portfolio manager says they have a PnL of $50m/yr Every social scientist says they have a significance level of 5% Every sinner says they'll barely make it to heaven"
X Link 2025-07-29T12:35Z 51.7K followers, 47.9K engagements
"Time for a sober but hopefully hopeful possibly short π§΅. Every year at this time of the year I am contacted by several interns across a swat of HF/prop trading firms who were just told sometimes informally that they will not receive return offers. 1/"
X Link 2025-08-05T02:51Z 51.7K followers, 107.4K engagements
"Dude Interesting convo last night at a house party. A low level employee at a large AI company (not saying which one) was there and the conversation moved to these insane salaries that the top guys are accepting to go to META and even more surprisingly the guys that are turning down Interesting convo last night at a house party. A low level employee at a large AI company (not saying which one) was there and the conversation moved to these insane salaries that the top guys are accepting to go to META and even more surprisingly the guys that are turning down"
X Link 2025-08-17T22:59Z 51.7K followers, 96.6K engagements
"Yesterday I was talking to smart high-schooler interested in finance and the topic of college major came up (he was undecided between math and physics). My preference for finance jobs is to hire applied mathematicians/physicists over pure math major. Simple example: PDEs. 1/"
X Link 2025-08-31T12:57Z 51.7K followers, 95.5K engagements
"Now do revenue per employee"
X Link 2025-09-04T02:53Z 51.7K followers, 822.4K engagements
"I just woke up and the first thought I had even before kissing my wife even before realizing I needed to go the bathroom so badly was I have to re-read that old survey by Gabaix on power laws in economics. It was good. Anyway link below. Open access. But life is really mysterious and wonderful in its small ways. And that was the second thought of the day. Happy Saturday"
X Link 2025-09-06T11:11Z 51.7K followers, 73.4K engagements
"In the near future basic concentration of measure will be taught in undergraduate probability. And concentration of probability for matrices in masters-level courses. https://arxiv.org/abs/1501.01571 https://arxiv.org/abs/1501.01571"
X Link 2025-09-10T20:14Z 51.7K followers, 36K engagements
"Here are the slides I used at MIT today for the talk "Buy-Side Equity Quant Analysis: Tools and Open Problems". The talk is very high-level and reuses some problems I described at a Fordham's conference last year. There is little new but. ok there's little new on this topic in my brain. https://tinyurl.com/bam-mit-2025 https://tinyurl.com/bam-mit-2025"
X Link 2025-09-12T03:24Z 51.7K followers, 52.7K engagements
"A significant fraction say between [--] and 50% of quant researchers in pods have really difficult stressful miserable jobs. Some of it is that edge is hard to find (and finding it and then maintaining it requires a mix of skills and smarts); some of it is psychological make-up that is unsuited to the job (i.e. there are ppl who could do a good job but just can't bear the stress); and some of it is caused by poor managers and unstable organizations. I am thinking about this because I have been hearing from these people more in recent times. And I have two thoughts. For people entering the field"
X Link 2025-09-13T21:47Z 51.7K followers, 138.9K engagements
"A colleague asked me for a good Bayesian stat reference. I recommended Gelman's books esp. Regression and Other Stories. But I found from Gelman's own blog (yesterday's post) that BDA3 is freely available. Below"
X Link 2025-09-14T15:45Z 51.7K followers, 52.6K engagements
"I have been reading this old book and its excellent. I had learned Kernel methods/Gaussian Processes via Rasmussen-Williams (also withstanding the test of time) but this is better. Ben Recht was writing recently something like nobody cares about kernel methods these days. Sadly true. I dont think kids care much about this stuff these days. Why study it then Three reasons from me: [--]. It generalizes linear models to the fullest extent and for free giving you insights into ridge Nadaraya-Watson attention mechanisms. Read recent and recurrent threads of @docmilanfar on this. [--]. It is among the"
X Link 2025-10-07T11:41Z 51.7K followers, 44.2K engagements
"Its a good question. I spend maybe 1hr/week talking to random PhD students chatting on zoom about this topic plus messages. I care about those people because I was them. My experience: I discovered Operations Research after graduating college and applied for a PhD abroad as a total outsider. I was a 2nd year PhD student when an MBA student told me I want to work for a hedge fund. It was the first time I heard the term. When a recruiter emailed me about a job at HRT I googled it and found the magic of Hormone Replacement Therapy. All the jobs were long-shot unsolicited calls from recruiters."
X Link 2025-10-30T12:01Z 51.7K followers, 73.1K engagements
"There was some talk about the Prediction Company and Complexity Scientists so I posted some notes on "The Predictors". Link in reply"
X Link 2025-11-07T23:16Z 51.7K followers, 19.8K engagements
"855 books on architecture [---] books on/by Wittgenstein Could sew clothes And disassemble/reassemble a car engine Had a deeply intense love life His novels are some the absolute best in the English language Cormac McCarthy is one of the most interesting people ever Terrifically amusing @SmithsonianMag story from last month about Cormac Macarthy's absolutely gigantic personal library which overwhelmed scholars are slowly going through. https://t.co/X0h6xB6DvK Terrifically amusing @SmithsonianMag story from last month about Cormac Macarthy's absolutely gigantic personal library which overwhelmed"
X Link 2025-11-08T12:46Z 51.7K followers, 38.8K engagements
"McCarthy read [---] books to research Blood Meridian. And it sold [----] copies when it came out. Life is a linear diffusion with drift. Looks like brownian motion at short time scales. But it's a straight line when you zoom out"
X Link 2025-11-08T15:50Z 51.7K followers, 71.6K engagements
"I am afraid that the LeCun-Wang swap was not a good trade. When we sat down with @alexandr_wang at Meta Connect [----] he shared his advice for young people: If youre [--] right now you should spend all your time vibe coding. This is the Bill Gates Mark Zuckerberg moment. The people who grow up with these tools will have an immense https://t.co/fwyvUA88lJ When we sat down with @alexandr_wang at Meta Connect [----] he shared his advice for young people: If youre [--] right now you should spend all your time vibe coding. This is the Bill Gates Mark Zuckerberg moment. The people who grow up with these"
X Link 2025-11-12T04:12Z 51.7K followers, 130.4K engagements
"For those intrigued by the tweet below: [--]. Replace Economics with discipline of your choice and you have a critique of everything. You can add and it is a social construct for good measure. [--]. Also you likely are in your mid 30s. It is time to graduate high school"
X Link 2025-11-14T06:22Z 51.7K followers, 94.4K engagements
"happiness is easy https://t.co/Lcj3TcV1vp https://t.co/Lcj3TcV1vp"
X Link 2025-11-15T15:16Z 51.7K followers, 36.3K engagements
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