Seagate and Toshiba are competing to buy the hard-drive magnetic-head business of TDK, Bloomberg reports, citing people familiar with the matter who put the acquisition at as much as several billion dollars.
In Bloomberg's account, Toshiba initiated talks with TDK in the spring and Seagate followed with a higher offer in the summer. Nobody is on the record for any of it. TDK's response is a statement that confirms exactly nothing: "Certain media reports have been published regarding HDD head business of the Company. However, these reports are not based on any announcement made by the Company." The sentence that follows is the one to read: "The Company is pursuing initiatives, including strengthening its business portfolio management, to further enhance corporate value, but no decisions have been made at this time." Decoded, the portfolio review is live, the head unit is inside it, and no price has been agreed.
Toshiba went further. A Toshiba spokesperson told Bloomberg the report was inconsistent with the company's understanding, and Toshiba denied that any three-party discussions had taken place between itself, TDK and Seagate, according to Investing.com, which labels its piece as AI-assisted; Japan Industrial Partners, Toshiba's owner, said the same. Read the wording. A denial of three-party talks is not a denial of talks.
The reason a head unit with a reported 4 percent return on invested capital is worth a contest is structural, and Blocks & Files lays it out: TDK is the only independent supplier of HDD recording heads and sells to all three drive makers. Toshiba depends on TDK for all of its heads, including the technology it needs for its HAMR plans, while Seagate and Western Digital make heads in-house and use TDK for surge capacity. Seagate owning the unit would put Toshiba's entire head supply, and WD's overflow option, inside the largest competitor of both. Blocks & Files expects competition authorities to have doubts about that. TrendForce projects 2026 share at Western Digital 48 percent, Seagate 42 percent and Toshiba 10 percent.
Toshiba cannot afford to lose that supplier. Blocks & Files, citing Nikkei, reports that Toshiba plans to spend roughly 60 billion yen, about $380 million, to nearly double the output of its Laguna Technopark drive plant in the Philippines by fiscal 2027 against fiscal 2025, and wants its share to reach 30 percent in the medium term. A drive maker planning to double output while buying every head from a supplier its rival is bidding for has one obvious move.
TDK's incentive runs the other way. As Blocks & Files reads TDK's results, the Magnetic Application Products segment, which bundles heads with suspension assemblies and magnets, booked 262.9 billion yen, about $1.74 billion, in the fiscal year ended March 2026, up 17.6 percent, with operating profit of about 27.0 billion yen, roughly eight times the prior year. Those are Blocks & Files' readings of TDK's reporting, not TDK's own segment table. TrendForce adds that magnetic application products post the lowest return on invested capital in the group at 4 percent. A segment that is finally profitable, still the group's worst return, and capital-hungry by nature is exactly the one a portfolio review sells at the top.
What is not known is everything that would price the deal: whether suspension assemblies go with the heads, what Seagate's higher number is, and whether either bidder has moved past a non-binding offer. Neither Western Digital nor Seagate responded to Bloomberg's requests for comment, per Blocks & Files. Until TDK files something, the only document on the record is a statement that denies nothing and decides nothing.
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