Nasdaq Enters Correction After Deepest One-Day Drop in 19 Months

The Nasdaq Composite closed sharply lower on Thursday, November 5, 2026, posting its deepest one-day drop in 19 months and entering correction territory, meaning a fall of at least 10% from a recent peak. Chipmakers sank on fears of tougher AI regulation. Investors in broad index funds hold those same chip names, at smaller weights.