Tech Volatility Underscores Push to Diversify in US Stock Market

The tech sector’s once relentless push higher in the US stock market has turned into a topsy-turvy ride, forcing investors to seek calmer waters where stodgy, old-economy companies ply their trades.

That’s meant diverting cash from the artificial intelligence trade, where it’s gotten more difficult to discern winners from losers, and into areas like materials and energy producers, or makers of consumer goods.