US stock markets closed higher on Wednesday after the Federal Reserve decided to keep its benchmark interest rates unchanged, while investors weighed the possibility of further monetary tightening and awaited quarterly results from leading technology companies. The Dow Jones Industrial Average closed up by 97 points at 52,475.10. The S&P 500 gained 0.28% to end at 7,743.98, and the Nasdaq Composite advanced 0.27% to 26,549.85.