SpaceX, Anthropic, and OpenAI Won't Be Added to the S&P 500 in 2026. Here's What Investors Can Do About It.

S&P Dow Jones Indices decided against fast-tracking companies into the S&P 500.

No matter the valuation, companies must undergo a minimum 12-month period in the public markets before being eligible for the S&P 500.

For now, the Nasdaq-100 seems to be going in the opposite direction of the S&P 500.

S&P Dow Jones Indices dropped a bombshell on June 4, rejecting its earlier proposal to fast-track the inclusion of megacap companies in the S&P 500 (SNPINDEX: ^GSPC) .

Here's how the news will directly impact high-profile initial public offerings (IPOs) like SpaceX, Anthropic, and OpenAI, and what you can do about it if you want exposure to these companies through an exchange-traded fund (ETF).

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On April 30, S&P Dow Jones Indices announced it was considering a shorter IPO seasoning period to fast-track the inclusion of megacap companies. It defines megacap companies as being among the 100 largest companies in the S&P 500 Total Market Index -- or at least $157 billion in market cap, based on recent prices. The seasoning period is when companies prove themselves on the public stage through accurate financial filings, governance, and maintaining a certain valuation.

SpaceX is raising $75 billion at a $1.77 trillion valuation -- which would easily put it among the 10 largest S&P 500 components. On May 28, Anthropic raised $65 billion at a $965 billion valuation. On March 31, OpenAI raised $122 billion at an $852 billion valuation.