US stocks ended a choppy session higher on Wednesday, bouncing off recent losses as technology stocks rose ahead of Nvidia's quarterly results.

Nvidia shares gained more than 5 percent after ending the regular session up 2.8 percent as the artificial intelligence leader forecast fourth-quarter revenue above Wall Street estimates.

Shares of Advanced Micro Devices rose 2.8 percent after the bell, while Alphabet was up 1.6 percent and Palantir Technologies was up 4 percent.

"The market is breathing a big, collective sigh of relief because Nvidia is confirming that AI demand is strong," said Adam Sarhan, chief executive of 50 Park Investments in New York.

"If it sticks and stays by tomorrow's close... this little pullback in the market could end."

The S&P 500 is still down more than 3 percent from its October highs.

Indexes briefly pared gains during the regular session after minutes from the last Federal Reserve meeting showed policymakers cautioned that lower borrowing costs could undermine the fight against inflation.

The Fed cut rates by a quarter of a percentage point at each of its meetings in September and October.

Worries about a cooling labour market persisted ahead of Thursday's release of the September US jobs report following the record-long US government shutdown.

The US Bureau of Labour Statistics said it will not publish the October employment report, but will instead combine nonfarm payrolls for that month with November's report.

Nvidia's results have been seen as a test for the AI-driven rally that has powered the market to record highs this year.

The Dow Jones Industrial Average rose 47 points, or 0.1 percent, to 46,138, the S&P 500 gained 24 points, or 0.4 percent, to 6,642 and the Nasdaq Composite advanced 131 points, or 0.6 percent, to 22,564. (Reuters)