Seagate Spikes 9%, Sandisk Surges 8% as CoreWeave’s Results Revive AI Trade; Micron Climbs 7%

A relief rally is running through memory and storage stocks after a steep monthly slide, and storage names are leading it. Seagate Technology (NASDAQ:STX | STX Price Prediction) stock is at $547.36, up 9% in morning trading. Even after that jump, Seagate stock is down 30% over the past month, so the rebound wins back only part of the lost ground.

Hard drive rival Western Digital (NASDAQ:WDC) is Seagate’s closest peer, and investors are watching whether the buying spreads across the storage group. The fundamentals at Seagate were strong going into the selloff: on October 27, the company reported Q1 FY2027 revenue of $4.23 billion, up 61% year over year, with adjusted earnings per share of $7.68. Seagate’s Q2 FY2027 guidance calls for revenue of $4.80 billion, plus or minus $100 million.

CoreWeave’s Funding Plan Reignites the AI Storage Trade

CoreWeave (NASDAQ:CRWV) beat expectations with its Q3 2026 results after the close on November 10 and raised its 2026 guidance. The key relief was financing: the AI cloud provider said it will rely mainly on contract-backed financing and customer prepayments instead of unsecured debt at current yields, which eased fears about how AI infrastructure spending gets funded and lifted chip, memory and data center infrastructure stocks.

For Seagate, it’s a direct link, because AI cloud buildouts drive demand for high-bandwidth memory, flash storage and high-capacity hard drives. Dave Mosley is Seagate’s chair and CEO. He said on the company’s October 27 call that “Data creation, retention, and reuse are compounding demand for mass capacity storage.” Berenberg analyst Ulrich Urbahn asserted the AI trade is recovering on hard demand evidence, noting that “Investors are buying back into positions with valuations now considerably lower.”

How Sandisk and Micron Stack Up Against Seagate

Sandisk (NASDAQ:SNDK) stock is at $932.63, up 8%, a gain that trails Seagate’s only slightly. The flash memory maker carried the biggest losses into the rebound, with Sandisk stock down 41% over the past month. An 8-for-1 forward stock split for Sandisk takes effect November 19.

Micron Technology (NASDAQ:MU) stock is at $775.76, up 7%, the smallest gain of the three featured names. Measured over the past month, Micron stock is down 25%, a shallower slide than Seagate’s. Bank of America removed Micron from its US 1 List on November 10, so the memory maker comes into the bounce with one less high-profile endorsement.

Hard Drives, Flash and DRAM Offer Different Paths to AI Demand

Seagate and Western Digital are the two U.S. pure-play hard drive makers, selling mass-capacity nearline drives that hold the bulk of hyperscaler data, while heat-assisted magnetic recording (HAMR) is Seagate’s main technology lever through its Mozaic platform, which packs more capacity onto each disk and supports the company’s margin expansion. Western Digital is Seagate’s most direct competitor and is preparing its own HAMR products.

Sandisk sells NAND flash, the chips inside solid-state drives (SSDs), and was spun out of the former Western Digital as a pure-play flash supplier. Micron is the widest memory player of the group, spanning dynamic random-access memory (DRAM), high-bandwidth memory (HBM) for AI accelerators and NAND. Both chipmakers sell faster, pricier memory and storage, while Seagate’s hard drives serve as the low-cost layer for data that AI systems keep and reuse.

Can the Memory and Storage Rebound Outlast Its Funding Worries?

Goldman Sachs analyst James Schneider called AI stocks “clearly in oversold territory,” but he raised concerns about how AI companies finance capital expenditures (capex) beyond free cash flow and whether enough land, power and data center capacity will be available. Schneider also said catalysts for a sustained rally may be limited before year-end. The rally in Seagate comes as NASDAQ 100 futures point higher, while Chicago Fed President Austan Goolsbee described the latest inflation report as “borderline disturbing” as the Fed weighs more rate hikes.

Seagate now faces the question of whether CoreWeave’s funding plan holds up and keeps hyperscaler orders flowing. Optimists can cite Seagate’s long-term supply agreements, which allocate the vast majority of its nearline supply through calendar 2028, while the bears can argue that a single strong CoreWeave quarter doesn’t settle the funding question.

Stockholders can watch for fresh capital spending updates from hyperscalers as a read on whether storage demand keeps growing (beyond the storage names, we pulled together seven suppliers driving the widest AI expansion, from electricity to cooling, in a free report you can grab here). Investors should stay cautious while the debate over AI capex funding plays out.

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