Space Exploration Technologies Corp. Class A Common StockSpaceX's inclusion in major index funds triggers billions in passive buying, boosting demand for its stock.

SpaceX has entered major index funds, automatically adding the company to millions of retirement accounts through passive investing. The stock joined the CRSP US Total Market Index on June 18, just five trading days after its IPO, and will be added to the Russell 1000 on June 29 and the Nasdaq-100 on July 7, triggering an estimated $13 billion to $21 billion in total passive buying. Index providers revised float requirements this spring to allow mega-cap companies with thin public floats, like SpaceX with only about 4% of shares available, to be included. OpenAI and Anthropic, both valued near $1 trillion and planning IPOs with similarly small floats, are expected to follow the same path into index funds. However, the S&P 500 declined to change its rules, maintaining a 12-month seasoning period and profitability test, so SpaceX will not enter S&P 500 funds until at least mid-2027 if it meets those criteria. Despite the automatic inclusion, SpaceX's weight in total-market funds like VTI is estimated at less than 0.2% due to its low float, meaning exposure is gradual and small for most investors.
Space Exploration Technologies Corp. Class A Common StockSpaceX's inclusion in major index funds triggers billions in passive buying, boosting demand for its stock.
Anthropic is mentioned as a potential future beneficiary of similar index inclusion, but no concrete impact now.
OpenAI is mentioned as a potential future beneficiary of similar index inclusion, but no concrete impact now.