SpaceX is about to double its weight in the Nasdaq 100. Goes from 1.28% to 2.82% when Monday's rebalance hits.

That's not a small move. Index funds tracking the Nasdaq will need to buy more $SPCX shares automatically. Creates buying pressure regardless of fundamentals.

Rebalances matter more than people think. When a stock's weighting jumps like this, passive money flows in. Not because investors suddenly love the company more—just math.

Watch Monday's open. Could see some volatility as the adjustments settle in.