SpaceX's Nasdaq-100 Weighting More Than Doubles as Quarterly Rebalance Trades Execute

Index funds tracking the Nasdaq-100 executed quarterly rebalancing trades at the Sept 18, 2026 close, lifting SpaceX's (SPCX) index weighting to roughly 2.82% from about 1.28% — a boost Wall Street estimated would force $15.5-22 billion in net passive buying, including from the $481B Invesco QQQ Trust. The increase reflects SpaceX's expanding public float as successive post-IPO lock-up tranches expired through August and September. The new weighting takes effect at Monday Sept 21's market open.