SpaceX shares slip below debut price at $148 in two-day fade after Nasdaq-100 entry

SpaceX shares closed at $148, falling below the stock's debut price across two consecutive losing sessions that followed the company's addition to the Nasdaq-100. The retreat arrives against the backdrop of a record offering: total IPO proceeds reached $85.7 billion after underwriters exercised the greenshoe overallotment option. The $148 close is now the reference print heading into the next session.

The greenshoe and the IPO record

The $85.7 billion figure reflects full activation of the greenshoe, the overallotment provision that allows underwriters to sell additional shares beyond the base offering when demand exceeds the initial allocation. Its exercise signals a well-covered book at launch. That total makes the SpaceX debut a record IPO. Two straight sessions of selling that pushed shares below the debut price are the first real test of that landmark print.

Nasdaq-100 inclusion and what followed

Entry into the Nasdaq-100 carries a mechanical demand signal. Passive funds tracking the index must hold the stock in proportion to its weighting, and that buying is typically positioned ahead of the effective date. Once inclusion takes effect and the anticipated flow is absorbed, the tailwind fades. The two-day slide arrived in the sessions immediately following SpaceX's addition. The tape has not signaled whether that dynamic is driving the give-back or whether sellers are simply working through the IPO overhang.

What to watch

The $148 level is now the line to reclaim. With the greenshoe already exercised, underwriters have used the principal mechanism available to support a newly public stock in the secondary market. The debut price, which the $148 close now undercuts, is the setup's defining reference for the sessions ahead.