Seagate Technology (STX) is trading sharply lower on Tuesday, April 28, 2026, as the market heads into the company’s fiscal Q3 2026 earnings report that is scheduled after the U.S. close. The move looks driven primarily by pre-earnings risk reduction and profit-taking following an outsized rally earlier this month, rather than a single new company headline.

STX has been a high-momentum name tied to AI data-center storage demand, and the stock’s April surge was reinforced by multiple bullish analyst actions earlier in the month. With the shares extended into the earnings date, traders appear to be locking in gains and reducing exposure to a potentially volatile after-hours event.

The key swing factors are the quarter’s revenue and EPS relative to expectations and, more importantly, forward guidance and commentary on nearline demand from hyperscalers, pricing, and margins. Options and positioning can amplify the reaction if results or outlook diverge from what’s been priced in after the recent run.