US equities rose on Thursday, Sept. 17: Dow Jones Industrial Average closed up 316.14 points (+0.61%) at 51,778.04; S&P 500 closed up 85.91 points (+1.14%) at 7,637.72; Nasdaq Composite closed up 439.87 points (+1.69%) at 26,418.30. 17-SEP-2026 04:05 PM ET