The opening bell on Wall Street did not bring any relief, as the mayhem in China also rattled US markets. By 5.30pm, the S&P 500 had slipped 1.3pc lower, while the Dow Jones industrial average and the Nasdaq Composite index lost 2.2pc and 2.7pc respectively. The Dow, S&P and Nasdaq closed 1.6pc, 1.5pc and 2.1pc lower respectively.