U.S. stocks closed higher on Monday, Sept. 21: Dow Jones Industrial Average up 367.08 points (+0.71%) to 52,049.72; S&P 500 up 114.26 points (+1.49%) to 7,764.76; Nasdaq Composite up 599.55 points (+2.26%) to 27,122.09. 21-SEP-2026 04:05 PM ET