The promise of artificial intelligence to rewire large swaths of the American economy supercharged tech shares for most of the year before the fever broke this fall. But investors would be remiss in thinking AI’s power to juice returns is over.

Nvidia bulls are starting to throw around an adjective rarely used for a stock that’s more than tripled in less than a year: cheap.

Amazon.com Inc.’s run as one of the best stocks this year will likely come down to the performance of a single business line: cloud computing.

The lockstep moves that have gripped the US stock market this month look set to end — at least for a day. A slew of big tech earnings reports sent shares in heavyweights Microsoft Corp. and Alphabet Inc. careening in opposite directions.

Investors who snapped up shares of Nvidia Corp. at the bottom of last month’s swoon got a harsh reminder of the multiple forces pushing and pulling on the chipmaker’s business prospects.

Bulls hoping the Nasdaq 100’s best day since August is the start of a meaningful rebound may be about to get a boost from a long-standing ally: tech companies themselves.

Investors have had a lot thrown at them this year: more Federal Reserve tightening, a regional banking crisis, and geopolitical turmoil. And yet US stock indexes are on track for a stellar year.

Berkshire Hathaway Inc. jumped to a record high after its Saturday earnings report showed an operating profit for the second quarter that exceeded Wall Street expectations.