SpaceX and other mega IPOs denied fast index entry by S&P

S&P Dow Jones Indices will keep its existing eligibility requirements for benchmarks including the S&P 500, closing the door to fast index entry for large technology IPOs such as SpaceX and delaying billions of dollars in flows from passive funds.

No shortened window, no waivers

In a press release published on Thursday, the index provider said it will not shorten the 12-month seasoning period that newly public companies currently have to serve, and it will not waive existing profitability and public-float requirements on the basis of a company's size. The decision followed a consultation on the treatment of megacap listings.

A different path from Nasdaq and FTSE Russell

The outcome diverges from a broader industry shift embraced by rivals Nasdaq Inc. and FTSE Russell, which have moved to accommodate very large listings. It means new megacap companies will have to wait out the existing window before they can be considered for the affected benchmarks.

The financial stakes are significant: index membership determines which stocks passive funds tracking those benchmarks must hold, so the timing of eligibility affects how quickly billions of dollars of index-tracking money can reach a newly public company's shares.

The consultation had been watched closely because of the size of the listings in the pipeline, including SpaceX, and the volume of assets tracking S&P's indices.