The Globe and Mail reports in its Thursday edition that Wall Street ended sharply higher Wednesday as Canada's main stock index clawed back much of the previous day's sharp decline. A Reuters dispatch to The Globe says that Nvidia overtook Alphabet, displacing the search-engine and advertising player as the U.S. stock market's third most valuable company. Nvidia, the dominant AI chipmaker, releases quarterly results next week, and now boasts a stock market value of $1.82-trillion (U.S.). Uber surged 15 per cent to a record high, boosted by a $7-billion (U.S.) share buyback plan. Lyft soared 35 per cent after its profit beat estimates and it said it would generate positive free cash flow for the first time in 2024. The S&P/TSX Composite Index ended up 304.43 points to close at 20,889.40. The index was down 2.3 per cent on Tuesday after hotter-than-expected U.S. inflation data rattled investors. "It's responding in my opinion to a very deep oversold condition that we got yesterday on a short-term basis," said Sid Mokhtari, chief market technician for CIBC Capital Markets. The Toronto Stock Exchange's tech sector rallied 3 per cent, industrials were up 2.4 per cent and heavily weighted financials added 1.7 per cent.