Nvidia reported quarterly results that handily topped Wall Street expectations, sending the stock sharply higher in after-hours trading.

The vast majority of stocks on Wall Street rose despite such swings, with more than 90% of stocks in the S&P 500 climbing. Their movements often get drowned out by Nvidia and other Big Tech stocks, whose movements have much more effect on the S&P 500 because of their immense sizes.

Jarring swings keep rocking Wall Street, and U.S. stocks erased a big morning gain to drop on Thursday as the market remains skittish following weeks of doubts and erratic moves.

The losses spread to Asia, where Japan’s Nikkei 225 index fell 1.8 per cent and South Korea’s Kospi slid 3.4 per cent on Friday morning. Hong Kong’s Hang Seng benchmark was down 1.8 per cent, and mainland China’s CSI 300 declined 1.4 per cent.

Wall Street experienced a wild rollercoaster ride on Thursday, opening sharply higher on another set of strong results from artificial intelligence giant Nvidia, only to end deep in the red as investors reassessed that optimism and mixed signals from the first U.