SpaceX’s Nasdaq-100 weighting will increase from 1.28% to 2.82%. This change takes effect before the market opens on Monday, September 21, 2026.
Lockup expirations increased the tradable share count, driving the adjustment instead of a stock rally. The move elevates SpaceX to the 7th largest position in the index.
Passive funds like the Invesco QQQ ETF must purchase shares to match the new weighting. Analysts estimate this forced buying will total between $15.5 billion and $22 billion. This represents one of the largest passive buying events of the quarter.
This mechanical rebalancing significantly increases SpaceX’s influence within the benchmark index.