S&P Weighs Rule Changes That Would Speed SpaceX S&P 500 Entry

S&P Dow Jones Indices LLC is considering changes to rules governing how companies join the S&P 500 Index, a move that would potentially fast-track SpaceX’s entry after its IPO, people familiar with the matter said.

The rule change could mean that billionaire Elon Musk’s space transportation and satellite company would see a wave of billions of dollars in forced buying. Funds that track the index must buy newly added stocks, and roughly $24 trillion is tied to the S&P 500, according to Bloomberg Intelligence.

The index provider is engaging with stakeholders to determine whether there’s demand for changing ...