SpaceX’s looming debut pushes Wall Street to rethink index rules. The rocket firm will raise $75 billion at a target valuation north of $1.8 trillion, prompting Nasdaq to shorten the entry window for the Nasdaq 100 and signalling a potential opening for the S&P 500.

Index providers are scrambling to accommodate SpaceX’s low‑float, high‑value profile. Nasdaq cut the minimum listing period from three months to 15 days, while FTSE Russell and S&P Dow Jones are expected to follow suit. The move could inject almost $20 billion of passive inflows into SpaceX‑linked ETFs.

Retail investors may secure up to 30 % of the offering, roughly $22.5 billion, compelling active managers to align or risk falling behind. The shift underscores a broader trend of mega‑firms testing the limits of public markets and could accelerate the flow of large private companies onto exchanges.

If SpaceX succeeds, the precedent may ease the path for AI and satellite juggernauts, reshaping how indices capture market power and potentially tightening the gap between founder‑led ventures and institutional governance.