US stocks: Nasdaq and S&P 500 slip while Dow hits record high ahead of Fed rate decision

US markets ended mixed ahead of the Federal Reserve rate decision, with the Dow Jones gaining 0.67 percent to a record 52,016.57, while the S&P 500 slipped 0.55 percent to 7,512.44 and the Nasdaq fell 1.15 percent to 26,382.81 as tech stocks pulled back after sharp recent gains. Oil prices dropped 5.8 percent on details of a US-Iran interim deal extending a ceasefire and reopening the Strait of Hormuz, easing inflation concerns. The Fed is widely expected to hold rates at 3.50 to 3.75 percent, though traders see a 42 percent chance of a 25 basis point hike in December.