The S&P 500 may turn speculative AI bets into default retirement holdings

If S&P Dow Jones Indices changes its rules in June, some of the most speculative private technology bets in America could become default retirement-account holdings before they have proven they can make money.

The index provider is considering a shorter path into the S&P 500 for giant newly public companies: six months of trading instead of 12 months, plus a possible waiver of the profitability requirement for large-cap companies, Reuters reported. The consultation closes May 28, and Reuters reported that adopted changes could be implemented June 8. That calendar matters because SpaceX, OpenAI, and Anthropic are all being discussed as unusually large candidates for future public listings, and the index rules decide how quickly passive investors have to buy them.

The pressure is mechanical. The S&P 500 is not just a scoreboard for large U.S. companies. It is the template followed by trillions of dollars in index funds, exchange-traded funds, and target-date retirement accounts. The Motley Fool, citing Bloomberg estimates, said about $24 trillion tracks or benchmarks against the index. When a company is added, funds that promise to mirror the S&P 500 have to buy it whether their end investors ever made a conscious bet on rockets, frontier AI models, or the economics of artificial general intelligence.

That is why a rule tweak aimed at index eligibility becomes a capital-flow story. Reuters reported that SpaceX is targeting a $1.75 trillion valuation in what would be the largest IPO ever, while OpenAI is seeking a valuation around $1 trillion and Anthropic, the AI safety company behind Claude, was valued at $380 billion in a February funding round. Those are not normal entrants waiting politely at the edge of the index. They are companies large enough to alter its concentration the moment they qualify.

The old S&P 500 gate was blunt but useful: a company generally needed four consecutive quarters of positive earnings before joining. Reuters reported that S&P DJI is now considering excluding that profitability test for large-cap companies. It is also considering a shorter public-listing history because the old rules were built for a market where companies did not stay private until they were already larger than most public firms.

There is a real case for the change. If the S&P 500 is supposed to represent the largest investable U.S. companies, leaving a trillion-dollar public company outside the index for a year can make the benchmark look stale. Morningstar has already been asking how index funds would handle a SpaceX IPO because a company that large does not enter the market quietly. Nasdaq announced in March that companies ranking within the top 40 of the Nasdaq-100 could become eligible for that index within 15 trading days after an IPO, a sign that S&P DJI is not alone in trying to adapt benchmarks to megacap listings.

The counterforce is that index inclusion changes who bears the risk. Reuters reported that SpaceX posted a nearly $5 billion loss on more than $18.6 billion of revenue last year. OpenAI and Anthropic are also racing to turn massive AI demand into businesses that can pay for equally massive compute commitments. A profitability waiver would not make those economics safer. It would make them more widely owned.

The concentration problem is already visible. The Magnificent Seven, Apple, Microsoft, Alphabet, Amazon, Nvidia, Meta, and Tesla, account for about one-third of the S&P 500 by weight, Reuters reported. Reuters also cited LSEG data showing that those seven companies delivered earnings growth of 43.2 percent in 2023, 36.9 percent in 2024, and 25.3 percent in 2025, while the remaining 493 companies managed negative 1.3 percent, 7 percent, and 10.9 percent over the same years. The index is already a technology concentration vehicle with a broad-market label.

Adding SpaceX, OpenAI, and Anthropic would deepen that structure in a stranger way. These companies are not just software vendors or cloud platforms. They are bets on launch economics, satellite networks, frontier AI demand, model safety, and the amount of compute the world will actually pay for. If they enter the S&P 500 quickly and without profitability, retirement savers would inherit those assumptions by default.

That does not mean S&P DJI is wrong to revisit the rules. The current system also has distortions. A company can become too large to ignore before it becomes eligible to include, and index funds then face a delayed, compressed buying event. Seeking Alpha reported the consultation as S&P Global considering changes for megacap companies, which is exactly the narrow problem: the public markets now have to absorb private companies that waited longer, raised more, and arrived bigger than the index methodology expected.

The unresolved question is who the new rules serve first. Faster inclusion may make the index more representative. It may also turn the S&P 500 into an automatic buyer for unprofitable megacap narratives at precisely the moment those companies need public-market depth. The consultation closes May 28. If the June 8 implementation date holds, the decision lands before the next wave of AI and space IPO speculation has time to cool.