22/07/2026
What happens when one of the world’s most valuable companies isn’t allowed into the S&P 500?
SpaceX has become one of the largest companies on the planet. Yet despite its size, it currently doesn’t qualify for inclusion in the US’s flagship stock market index, the S&P 500. Why?
All stock market indices have eligibility criteria which companies must meet in order to be listed on them. These include the size and value of a business (the market cap of a company), as well as having a minimum number of their shares available to be traded publicly.
With a market value just under $2 trillion, SpaceX is one of the 10 most valuable businesses globally. However, only around 7.5% of its shares are publicly trading, and the company is yet to achieve profitability, so SpaceX does not meet the eligibility criteria for some stock indices.
Yet in many ways SpaceX is no ordinary company. Its scale, profile and the level of investor interest surrounding its listing make it difficult for index providers to ignore. This has created an awkward dilemma for stock index providers. Should they stick rigidly to their rules, or change them to reflect the reality of today’s market?
If SpaceX entered the S&P 500 at roughly a 4% weighting, funds tracking the index could be forced to buy billions of dollars’ worth of SpaceX shares almost overnight. That buying pressure could push the share price higher still.
Read more: https://www.akrwealth.co.uk/article/detail/sjpp/spacex-and-the-billion-dollar-indexing-dilemma