Russell tries to represent what investors are actually buying and selling, a larger swath of the economy than S&P Dow and Nasdaq do

so they get a little bit of a pass for me, but Nasdaq doesn't

CRSP has had fast track rules for quite a while.

They changed their minimum float rule for these mega IPOs with low float.

I wasn't familiar with the Center for Research in Security Prices (CRSP). Apparently they were acquired by Morningstar in February 2026. I also found this press release from Vanguard announcing they will be updating fund names (including VTI) to reflect the acquisition https://corporate.vanguard.com/content/corporatesite/us/en/c... but nothing on the fund composition or rule changes.