Seagate Technology ( NASDAQ:STX) has delivered one of the market's most impressive performances to start 2026. The stock has surged 56.6% year-to-date through February 12, crushing the S&P 500 over the same period. Here's what's more impressive: Seagate is the 5th best performer in the entire S&P500,meaning it's outperforming 99% of other large-cap stocks so far this year! Even more striking: the rally extends a remarkable 335% climb over the past year, transforming what was once a cyclical storage play into an AI infrastructure darling.