U.S. stocks opened higher on August 21, with the Dow Jones Industrial Average rising 275.18 points, or 0.52%, to 53,034.39. The S&P 500 gained 29.9 points, or 0.39%, to 7,671.56, while the Nasdaq Composite climbed 108.98 points, or 0.42%, to 26,176.14, according to Gate market data.