S&P Dow Jones Indices Maintains Strictures on IPOs, Impacts Major Players

By Patricia Miller

Jun 07, 2026

2 min read

S&P Dow Jones Indices has reaffirmed its IPO eligibility rules, delaying major companies like SpaceX from joining the S&P 500.

#Why Did S&P Dow Jones Indices Delay Major IPOs?

S&P Dow Jones Indices recently made it clear that it will not alter its eligibility criteria for major indices like the S&P 500. This decision, announced on June 4 following extensive consultation, means that formidable IPO candidates, such as SpaceX, will have to hold off for now. SpaceX aims for a June 2026 IPO with an ambitious valuation of $1.75 trillion while only floating a small percentage of shares. Despite its size, SpaceX’s incorporation of these existing regulations means it will face a mandatory cooling-off period of at least one year before any consideration for inclusion in the S&P 500.

#What Are the Current Eligibility Requirements for the S&P 500?

Understanding the S&P 500’s eligibility requirements is crucial for any company looking to enter this prestigious index. Primarily, companies must meet three key criteria. First, they must complete a full 12-month seasoning period as a public company, which is non-negotiable. Second, companies must demonstrate profitability by showing positive earnings according to Generally Accepted Accounting Principles (GAAP) both in their most recent quarter and throughout the preceding four quarters. Lastly, there are established thresholds for the minimum investable weight factor (IWF). The IWF assesses the proportion of a company’s stock that’s publicly traded versus the stock locked away by company insiders. Since SpaceX plans to initially offer less than 5% of its shares to the public, this poses a significant barrier for entry.

#What Are the Implications of S&P's Decision for the Market?

S&P's ruling comes against a backdrop of contrasting approaches from its competitors, Nasdaq and FTSE Russell, which have eased their entry rules for sizable IPOs. They believe that permitting immediate inclusion for mega-valued companies ensures that indices align more closely with their respective market representations. In contrast, S&P's Index Committee places a greater emphasis on long-term financial health rather than just market valuation. This divergence creates a clear divide among significant index providers; thus, companies like SpaceX may find opportunities elsewhere—like in Nasdaq—while being excluded from S&P-related index funds. The consequences for investors are notable. Given that S&P 500 index funds hold significantly more assets than others tracking the Nasdaq-100, S&P’s approach effectively postpones the potential for passive investment influx for newly listed megacaps like SpaceX. Consequently, during this interim, the company must seek robust demand from active investors, which could lead to volatile price movements, especially considering its planned low float and substantial past losses. Moreover, for other late-stage private companies contemplating an IPO, S&P's ruling sends a clear signal: achieving massive valuations isn't sufficient; profitability must be realized to tap into the substantial pool of automatic capital that public listing provides.

Important Notice And Disclaimer

This article does not provide any financial advice and is not a recommendation to deal in any securities or product. Investments may fall in value and an investor may lose some or all of their investment. Past performance is not an indicator of future performance.