NEED TO KNOW

• SpaceX begins trading today at $135 per share, a record $1.75 trillion valuation
• New Nasdaq rules pull the stock into index funds within 15 trading days
• S&P 500 declined to fast-track, leaving passive investors split across rulebooks

NEW YORK, NY (TDR) — SpaceX begins trading on the Nasdaq today at $135 per share, and within 15 trading days, funds tracking the Nasdaq-100 must start buying it whether their investors chose to or not.

The big picture: The largest IPO in US history arrives wrapped in two rule-bending moves that work in the same direction.

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• Elon Musk's company skipped traditional bookbuilding, setting a fixed $135 price rather than letting investor demand discover one
• The offering raised about $75 billion, the biggest haul in US public-market history
• Nasdaq changed its index rules effective May 1, cutting the inclusion wait from roughly three months to 15 trading days for top-40 listings

Why it matters: Millions of Americans become SpaceX shareholders by default, not by decision.

• Index investors who want no part of the stock may need real effort to avoid it
• Nasdaq-100 trackers hold roughly $600 billion in assets; inclusion alone generates about $6 billion in mechanical demand triggered by a rule, not an investment thesis
• University endowments are already in deep: the UNC system holds 10% of its endowment in SpaceX, alongside Stanford and Washington University

Driving the news: The plumbing changed weeks before the pipes filled.

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• Nasdaq's "Fast Entry" overhaul also loosened free-float requirements, letting thin-float companies carry up to three times their float weighting
• Index forecaster Intropic projects passive funds will hold about 30% of SpaceX's free float within 15 trading days, versus roughly 4% under the old rules
• SpaceX confirmed the fixed $135 price Thursday night, declining to publish a range at any point

What they're saying: Market voices split on whether the structure protects investors or conscripts them.

• Jay Ritter, University of Florida finance professor — "Probably, the price is going to jump on the first day"
• Franco Granda, PitchBook senior research analyst — "It does remove the upside a little bit"
• Tomic of Boston College — "What's particularly problematic is the 15-day rule"
• Oppenheimer opened coverage with a $190 target, well above the offer price

Yes, but: The forced-buying critique skips over what investors actually did with their own money.

• Demand reportedly ran about twice the shares on offer, with an unusually large retail allocation people fought to get
• The fixed price handed retail buyers the same entry as institutions, something bookbuilding never did
• S&P Dow Jones refused to fast-track, holding its 12-month profitability requirement, proof one major rulebook kept its check intact

Between the lines: The fixed price and the fast-entry rule solve the same problem from opposite ends: guaranteeing demand at a valuation no market process ever tested.

• Bookbuilding exists to discover a price; index inclusion assumes one. SpaceX skipped the first and accelerated the second.
• Nasdaq finalized its rule three weeks before the largest listing in history. No one on record says it was written for this IPO, and the calendar makes the alternative hard to name.

What's next:

• SPCX opens this morning; the first session shows whether $135 holds without the passive bid
• FTSE Russell funds can buy within five trading days; Nasdaq-100 inclusion lands around July 7
• S&P 500 entry waits until at least mid-2027, pending GAAP profitability
• OpenAI and Anthropic, both expected to list this year, inherit whatever tone SPCX sets

When index rules turn the biggest IPO in history into a default holding, is faster access for everyone worth losing the choice to sit it out?

Sources

This report was compiled using reporting from Kiplinger, Stocktwits, Yahoo Finance, NerdWallet, heise online, Al Jazeera, ETF Stream, TradingKey, Morningstar, and SpotGamma

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