
SpaceX Joins Broad Index Funds, With OpenAI and Anthropic Soon to Follow
SpaceX’s ultra-thin public float now meets revised index rules, allowing it to be added to major benchmarks behind funds like VTI and prompting automatic, phased buying in millions of 401(k) plans. The same mechanism is set to pull OpenAI and Anthropic into the indexes next, while the S&P 500 did not change its rules. For savers, the impact is gradual exposure through passive funds rather than a one-shot jump, as weight depends on float and liquidity rather than a company’s current profitability or price.













