Nasdaq Rose 2.26% Sept. 21 Even as New Lows Doubled New Highs

The Nasdaq rose 2.26% on Sept. 21, 2026, according to Reuters. Reuters data for that session showed 127 new lows against 64 new highs. For savers in index funds, I'm wary when headline gains hide broad weakness — a handful of winners can lift the average while most stocks fall behind.