Marvell Technology tops fourth-quarter earnings estimates but the stock tumbles as in-line guidance disappoints investors, Broadcom slumps ahead of the release of quarterly earnings, and MongoDB falls sharply on a weaker-than-expected fiscal-year outlook.

Intel is rising on a report that two leading AI names are running manufacturing tests using its chipmaking technology.

U.S. equities fell at midday on weak economic reports and worries about new tariffs from the Trump administration.