SpaceX shares rose 2.6% to $154.81 on Thursday and more than 4% during the week as investors positioned for a Nasdaq-100 quarterly recalibration. The company’s index weighting will increase from approximately 1.28% to roughly 2.82% after Friday’s close, taking effect September 21. With about $1.7 trillion tracking the index, analysts estimate $15.5 billion to $22 billion in mandatory passive purchases during the 4:00 p.m. Eastern closing auction. The move is not SpaceX’s initial inclusion, which occurred on July 7, 2026, 15 trading sessions after its $75 billion initial public offering. The higher weighting reflects Nasdaq-100 float-adjusted capitalization rules and the release of more than 1.2 billion shares from two August lockup expirations. SpaceX reported second-quarter 2026 revenue of $7.81 billion, up 91.9% annually, and an EPS loss of $0.09 compared with the expected loss of $0.26. However, more than 2.3 billion restricted shares are scheduled to exit lockups in late October and mid-November, while the company’s valuation approaches $2 trillion. The July inclusion offers a cautionary precedent: despite $4.3 billion in mandated passive buying and nearly unanimous Buy recommendations from 19 analysts, the stock fell almost 6% that day.