Global shares mostly gained on Thursday after a rally in U.S. tech stocks lifted the Nasdaq to an all-time high and helped Wall Street claw back most of its losses from earlier in the week.

“Financial markets have reacted to news of higher U.S. tariffs in sanguine fashion,” wrote Chris Turner, ING’s global head of markets.

Nvidia reached another milestone in its rise to becoming one of the world's most important companies: the first publicly traded company to reach a market value of $4 trillion. Nvidia and other companies benefiting from the boom in artificial intelligence have been a major reason the S&P 500 has recently climbed to a record.

Nvidia holds a 7.3% weight on the S&P 500, the biggest on the index.

Helping U.S. stocks, artificial intelligence leader Nvidia (NVDA.O) notched a market capitalization of $4 trillion, making it the first public company in the world to reach the milestone.