SpaceX's entry will take longer after S&P Dow Jones Indices declined to relax rules for megacap IPOs. Reuters U.S. M&A Editor-in-Charge Echo Wang examines the IPO and whether sky-high multiples are justified or reflect the so-called Musk premium.

Mega IPOs won't have a fast track into the S&P 500 like they will for the Nasdaq 100. The decision means SpaceX can't join the index until mid-2027.

SpaceX will sell its shares for $135 apiece during its IPO, yielding a valuation of $1.77 trillion.

SpaceX says it plans to raise up to $75 billion when it goes public this month in what could be the largest stock market debut ever, and it would put Elon Musk on course to becoming the first trillionaire.

The Tema Space Innovators ETF has come out of nowhere to become the largest space-themed ETF in just two months, thanks to a 10% weighting in SpaceX and outperformance versus peers.

Many current and former staffers have stakes valued at millions of dollars and will be able to tap them more easily after the rocket maker goes public.

Your pension plan may not be forced to buy SpaceX stock after all.