S&P 500 considers fast-track entry rules as SpaceX, OpenAI and Anthropic eye IPOs

S&P Dow Jones Indices launches review of megacap eligibility rules, potentially halving the listing period to 6 months and waiving profitability requirements. SpaceX, OpenAI and Anthropic among potential beneficiaries as IPOs loom.

Summary:

• S&P Dow Jones Indices has announced a formal review of eligibility requirements for the S&P 500, examining whether megacap companies should face less stringent entry criteria and be eligible for fast-track inclusion
• The review was prompted by the prospect of large unprofitable companies conducting IPOs in 2026, with SpaceX, OpenAI and Anthropic all reportedly preparing to list as soon as later this year
• Under the proposed changes, newly public companies could qualify for S&P 500 inclusion after just six months of listing rather than the current 12-month minimum
• The existing requirement for profitability on a GAAP basis over a cumulative 12-month period and in the most recent quarter could be waived entirely for companies that qualify as megacaps
• S&P Dow Jones Indices said huge new public companies have the potential to achieve immediate and material investor ownership, trading liquidity and market relevance, but current rules could prevent timely index inclusion and undermine the benchmark’s effectiveness
• SpaceX was most recently valued at $1.25 trillion and is reportedly planning to raise fresh capital at a valuation as high as $2 trillion, which would make it one of the largest US companies by market capitalisation at the point of listing
• OpenAI was valued at $852 billion in its most recent fundraising round, while Anthropic’s most recent post-money valuation stood at $380 billion, though funding offers valuing the company at more than $900 billion have been reported
• S&P Dow Jones Indices is not the first to move in this direction: Nasdaq approved a fast-entry rule in March to ease access to the Nasdaq-100 for large newly listed companies, and FTSE Russell is also exploring a similar mechanism
• The changes remain under review and have not yet been formally adopted

S&P Dow Jones Indices has opened a formal review of the rules governing entry to the S&P 500, raising the prospect of sweeping changes that could allow the world’s most closely tracked equity benchmark to fast-track megacap companies at the point of listing and drop its longstanding profitability requirement for the largest entrants.

The review, announced late Thursday, is a direct response to the looming wave of major initial public offerings expected in 2026. SpaceX, OpenAI and Anthropic are all reportedly preparing to go public as soon as later this year, and the sheer scale of those companies has exposed a tension at the heart of the existing eligibility framework. Under current rules, a company must have been listed for at least 12 months and must demonstrate GAAP profitability over a cumulative 12-month period and in its most recent quarter before it can be considered for inclusion. Neither OpenAI nor Anthropic is profitable on that basis, and SpaceX, though privately cash-generative, has not yet been subject to public reporting requirements.

S&P Dow Jones Indices acknowledged the problem directly, noting that companies of this scale have the potential to achieve immediate and material investor ownership, trading liquidity and market relevance at the point of listing, yet adherence to existing rules could prevent timely inclusion and reduce the benchmark’s effectiveness as a market representation tool.

The proposed changes address both barriers. The minimum listing period would be cut from 12 months to six, bringing the S&P 500 closer to the position already adopted by Nasdaq, which approved a fast-entry rule for the Nasdaq-100 in March. FTSE Russell is also exploring a similar mechanism, suggesting a broader rethink is underway across the index industry. More significantly, megacap companies could be exempted entirely from the profitability screen, a requirement that has historically served as a quality filter distinguishing the S&P 500 from more speculative benchmarks.

The stakes are considerable. SpaceX is reportedly targeting a fundraising valuation of up to $2 trillion, which would place it among the very largest US companies by market capitalisation on day one of any listing. OpenAI’s most recent round valued it at $852 billion, while Anthropic has received funding offers implying a valuation above $900 billion. Inclusion of any one of these companies would trigger mandatory buying from the vast pool of passive capital tracking the S&P 500, with immediate and material implications for index flows and the stocks themselves.

The review is ongoing and no changes have been formally adopted.