After years of soaring on hopes for a high-tech artificial-intelligence future, the stock market’s latest hot corner is an old fashioned part of the technology industry.
Seagate Technology Holdings Plc, which makes hard disk drives for computers, is the best performing stock in the S&P 500 Index this year after soaring 156%. Rival Western Digital Corp. ranks third with a 137% gain. And Micron Technology Inc., the biggest maker of memory chips in the US, is fifth following a record 12-session winning streak pushed its 2025 rise to 93%.