Mars Finance News: According to Gate market data, the Dow Jones Index opened up 793.21 points on March 23 (Monday), with a gain of 1.74%, closing at 46,370.68 points; the S&P 500 Index opened up 96.85 points, with a gain of 1.49%, closing at 6,603.52 points; the Nasdaq Composite Index opened up 331.55 points, with a gain of 1.53%, closing at 21,979.16 points.