U.S. equities closed in mixed fashion Monday, May 18, 2026, with the S&P 500 barely moving at 7,403.05 (-0.07%) while the Dow Jones added 159.95 points (+0.32%) to 49,686.12. The Nasdaq Composite dropped 0.51% to 26,090.73, and the Russell 2000 fell 0.65% to 2,775.10, signaling c