Stocks came under pressure as a trio of tech heavyweights fell, with traders wading through mixed economic data in the run-up to Jerome Powell’s testimony to Congress.
Equities lost traction after a rally that has spurred concern about sky-high valuations — especially in megacaps, leaving the group vulnerable to big moves in the face of bad news. Apple Inc.’s iPhone woes in China deepened while Advanced Micro Devices Inc. hit a US roadblock in selling an artificial-intelligence chip to the Asian nation. And Tesla Inc. extended its rout as China shipments slumped.
