Warren Asks Index Providers About Rule Changes Ahead of SpaceX Trading Debut

Sen. Elizabeth Warren sent a letter on Thursday to the heads of Nasdaq, S&P Dow Jones Indices, FTSE Russell and Morningstar Indexes asking whether the companies had made or considered rule changes based on lobbying from Elon Musk, other SpaceX officials or officials from OpenAI or Anthropic. The letter also requested any communications between the index companies and SpaceX, OpenAI or Anthropic.

CNBC is first to report the letter. Warren detailed changes or proposed changes including fast-tracking newly listed stocks into top indexes. "The changes to your index rules to accommodate these large companies, however, have the potential to destabilize markets and create significant risks for American investors, especially retirees and other individuals that rely on index funds for their savings," the letter stated.

SpaceX is set to begin trading on Friday. 8 trillion. OpenAI and Anthropic have confidentially filed for IPOs. Earlier this week, Warren called on the SEC to delay the SpaceX offering.

She cited concerns that the SEC had not done due diligence in protecting investors and market integrity.