The doomsaying was around most retirement assets. Which don’t follow any single index. But to the extent they do, follow the S&P 500.
The market wasn’t pricing in any rebalancing. Commenters were screaming bloody murder about it. In the middle, I’m sure some numpties generated trading and management fees by switching target funds.
This is not misinformation. Misinformation is saying the proposed rule change and their proximity to trillion dollar IPOs introduced no risk. Please do not spread such misinformation.
Yes, which is why the news that S&P isn't changing their rules is kind of notable. Vanguard's S&P 500, $VOO, just hit US$ 1 trillion AUM; the next biggest, $IVV, is just over $800B; $SPY is just under $800B.
* https://etfdb.com/compare/market-cap/
* https://www.tradingview.com/markets/etfs/funds-largest/
That's about USD 2.5T.
Worth considering:
* https://en.wikipedia.org/wiki/Prevention_paradox
And the rules for the NASDAQ 100 were changed, as were MSCI and CRSP:
* https://www.schwab.com/learn/story/some-indexes-accelerate-e...