Reading up on index-funds

S&P 500 rejects rule changes that would have fast-tracked SpaceX, OpenAI, and Anthropic into the index, maintaining standard eligibility criteria like profitability and a one-year seasoning period.

Nasdaq and other index providers are changing eligibility rules so that SpaceX will be added to major stock indexes after its upcoming IPO, forcing inclusion in 401(k) index funds regardless of investor preference.

Index providers are fast-tracking giant IPOs like SpaceX and Anthropic into major benchmarks, forcing index funds to buy heavily on day one instead of waiting for a seasoning period.