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![MorningstarInc Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::16726035.png) Morningstar, Inc. [@MorningstarInc](/creator/twitter/MorningstarInc) on x 230.5K followers
Created: 2025-07-18 11:00:00 UTC

New research finds that valuation expansion—not stronger fundamentals—has fueled US stocks’ dominance since 2008. Learn more about AQR’s study on the sustainability of US exceptionalism and key takeaways for investors:

![](https://pbs.twimg.com/card_img/1943935710018359298/Ai0SSXPO?format=jpg&name=800x419)

XXXXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1946163035703284052/c:line.svg)

**Related Topics**
[sustainability](/topic/sustainability)
[dominance](/topic/dominance)
[stocks](/topic/stocks)
[morningstar inc](/topic/morningstar-inc)
[stocks financial services](/topic/stocks-financial-services)

[Post Link](https://x.com/MorningstarInc/status/1946163035703284052)