Sometimes a sector quietly does something remarkable while everyone's watching the obvious winner. Case in point: while Nvidia (NVDA) took about three years to rack up a 1,330% gain after ChatGPT launched in November 2022, Sandisk Corp. (SDNK) just matched that performance in 11 months since its February 2025 IPO.
Wednesday brought fresh evidence of why. Memory and storage chipmakers surged after Seagate Technology Inc. (STX) delivered earnings results that weren't just good—they were the kind that make analysts scramble to revise their models upward. Seagate jumped more than 15%, and the rally quickly spread to its peers.
Sandisk and Western Digital Corp. (WDC) each climbed more than 6% on the day. Year to date, Sandisk is up 84% and Western Digital has gained 40%. The moves reflect something bigger than one company's quarterly report: a global storage supply crunch driven by AI demand that's fundamentally reshaping the economics of the memory chip industry.
Seagate's Numbers Tell the Story
Seagate reported earnings per share of $3.11, comfortably above the $2.83 Wall Street expected. That's a 53% jump from a year earlier. Revenue hit $2.83 billion versus the $2.74 billion consensus, up 21% year over year. Gross margin came in at 42.2%, another upside surprise.
But here's where it gets interesting: the guidance. Seagate expects $2.90 billion in revenue for the current quarter at the midpoint, well ahead of the Street's $2.81 billion estimate. Operating EPS is projected at $3.40, beating the $3.03 consensus.
Goldman Sachs analyst James Schneider responded by raising his price target on the stock from $310 to $385 on Wednesday.
Sold Out Through 2026
The real story is supply. Or rather, the lack of it. Management said the company's production capacity is now completely sold out for 2026, and they expect major hyperscaler customers to start placing orders for 2027 soon.
"Management noted that its production capacity is now sold out for 2026, and it expects key hyperscaler customers to begin placing orders for 2027 in the near future," Schneider said.
When supply is that tight, pricing power follows. Seagate reported a modest increase in price per terabyte last quarter, and management expects another increase this quarter. That's letting them boost margins while growing revenue, a combination that tends to make investors happy.
"We believe management's intent to not add unit production capacity should underpin investor confidence in a tight supply environment for the foreseeable future," Goldman noted.
Technology Advances Add Another Layer
Seagate is also making progress on its heat-assisted magnetic recording (HAMR) technology, which matters for future capacity and margins. The company shipped 1.5 million HAMR drives last quarter, up from 1 million previously. Its Mozaic 3 product has now been qualified with all major U.S. hyperscalers.
"Seagate reported a modest increase in price per Terabyte in the quarter, and management expects a further increase this quarter," Schneider added.
The tight supply-demand dynamic has allowed Seagate to raise prices per terabyte and boost margins, with management forecasting sequential EPS and revenue growth through 2026.
Analysts remain bullish on the setup. "We see Seagate as a key beneficiary of persistent industry tightness and firm pricing trends," Schneider said, though he noted potential risks like supply overshoots or slower-than-expected customer adoption of new technologies.
The broader takeaway: AI isn't just about the chips that train models. It's about the entire infrastructure stack, including the unglamorous business of storing data. And right now, that unglamorous business is delivering some very glamorous returns.
