Seagate has turned into one of 2026’s most compelling stories outside of chip design. The hard disk drive maker has risen about 200% year to date, driven by a demand wave from hyperscale data centers building out AI infrastructure. The stock closed near $853 on September 4, still about 20% below its 52-week high.
That gap exists for a reason. After Seagate reported its fiscal Q4 2026 results on July 29, beating consensus on revenue and EPS for the fourth straight quarter, the stock initially surged then pulled back. Insiders have sold roughly $106 million of shares over the past 90 days, a pattern that drew attention. The forward price-to-earnings multiple, at about 28 times, sits well above a 15x forward P/E level cited for the S&P 500 technology complex earlier this year.
The fundamentals, though, are not ambiguous. Q4 revenue came in at $3.63 billion, a 48% year-over-year gain. Data center revenue reached about $2.93 billion, up 57%. Non-GAAP EPS of $5.71 was up 120% from the prior year and beat consensus by about 12%. For full fiscal 2026, revenue totaled $12.2 billion, 34% above the prior year, while non-GAAP EPS rose to $15.58 from $8.10.
More relevant to what comes next: management guided fiscal Q1 2027 revenue to $4.1 billion and EPS to $7.30, both ahead of where consensus sat before the call.
The AI Storage Case
Seagate’s business depends on a simple premise: the models generating AI outputs need somewhere to store training data, inference logs, and the outputs themselves. Solid state drives handle hot data. Seagate’s high-capacity nearline hard disk drives, built on its Mozaic HAMR platform, handle the mass-capacity cold and warm storage that scales economically for cloud providers at the terabyte level.
The company’s nearline capacity is on allocation through calendar 2026, with supply agreements extending into 2027. It generated record free cash flow of $3.1 billion in fiscal 2026 and reduced total debt by $1.4 billion during the year. It returned approximately $810 million to shareholders through dividends and repurchases. A $5 billion buyback authorization is in place. The company declared a $0.74 dividend with an ex-date of September 24.
Analyst ratings and price targets move daily. As of early September, many analysts had the stock rated Buy or equivalent, with published targets clustered near the stock’s prior high.
What Could Go Wrong
The stock carries real execution risk. If cloud spending slows, if HAMR manufacturing yields disappoint, or if qualification timelines at major customers slip, revenue and margin expansion both come under pressure faster than the current multiple allows. The insider selling pattern, while legally routine, is worth monitoring. SSD technology continues to improve, and any inflection in cost per terabyte from flash could eventually pressure HDD pricing.
High expectations are already embedded in analyst targets, and a single weak guidance report would hit a stock priced for continued perfection.
The Bottom Line
Seagate enters September with the strongest product cycle in its history, a Q1 FY27 revenue guide of $4.1 billion that implies further acceleration, and about a 20% discount to its 52-week high. The risk is multiple compression if AI capex commentary softens. The reward is a company delivering 48% quarterly revenue growth with capacity constraints that will likely persist into 2027. At this price, the data argues for attention.
