--- title: "TDK owns the one part AI storage cannot do without, and speaks on October 30" description: "Seagate and Toshiba are reported in talks to buy TDK's hard-drive head unit, the only independent source of the part that reads and writes every platter. The seller's answer is due on TDK's October 30 earnings call, with short interest up 144.8% waiting on it." publisher: "The Inference" section: "Deals" published: 2026-10-20T01:18:49.157Z modified: 2026-10-20T01:18:49.157Z canonical: https://theinference.org/article/tdk-owns-the-one-part-ai-storage-cannot-do-without-and-speaks-on-october-30 language: en keywords: "AI Infrastructure, Storage, Hard Drives, M&A, Data Centers" --- # TDK owns the one part AI storage cannot do without, and speaks on October 30 > Seagate and Toshiba are reported in talks to buy TDK's hard-drive head unit, the only independent source of the part that reads and writes every platter. The seller's answer is due on TDK's October 30 earnings call, with short interest up 144.8% waiting on it. AI storage has produced one genuinely scarce object: the magnetic head, the tiny component that reads and writes every platter in a hard drive. [TDK](https://theinference.org/markets/companies/tdk) (Tokyo: 6762; OTC: TTTDKY), the Japanese components maker, owns the only independent supply of it, and [Seagate](https://theinference.org/markets/companies/seagate) (Nasdaq: STX) and Toshiba are [reported in talks to buy the unit, with offers said to be worth several billion dollars](https://www.jain.com/seagate-toshiba-tdk-hdd-magnetic-head-business-acquisition-talks/) [1][3][4]. On October 30, when TDK reports, chief executive Noboru Saito either confirms a process and a number, or leaves the story to others [7]. ## The bottleneck moved from demand to delivery AI services keep their data on nearline drives, the high-capacity disks that stay online in data centers. [About 90% of Seagate's exabyte shipments now go to AI nearline demand](https://www.webull.ca/news-detail/15760768474178560), under build-to-order contracts running through 2028 into 2029 [1][2]. Every platter surface needs a head, and heat-assisted magnetic recording, which puts a laser on the head to write data more densely, makes the head the hardest part of a drive to manufacture at volume [1][3]. Once demand is booked years ahead, a component you do not own becomes somebody else's allocation decision. In space- and power-constrained markets like Singapore and Tokyo, operators already pay premiums for the density that better heads deliver [8]. *Chart: **Seagate's quarterly revenue has more than doubled since 2023 as AI nearline demand books drives years ahead** Line chart of Seagate's quarterly revenue rising from $1.45 billion in the quarter ended September 2023 to $3.63 billion in the quarter ended July 2026.* *Seagate quarterly revenue in US dollars, from its SEC filings, retrieved October 20, 2026. About 90% of its exabyte shipments now serve AI nearline demand under build-to-order contracts running through 2028 into 2029. [9]* ## Reports disagree on the deal's shape, not on the scarcity Toshiba opened talks with TDK in the spring of 2026; Seagate is reported to have bid higher in the summer [3][5]. The reported structures differ: a sale to the higher bidder, a split of the unit between the two, or a joint venture [1][2][6]. Toshiba has called the bidding-war account inconsistent with its understanding, and TDK's only words are that "[the report was not issued by TDK, and no decisions have been made at this time](https://www.forbes.com/sites/tomcoughlin/2026/10/17/tdk-head-unit-sale-to-toshiba-or-seagate-long-term-implications/)" [5][3]. Nothing disputes the underlying position: TDK is the sole independent head maker. Toshiba makes none of its own heads and depends on it entirely, while Seagate and [Western Digital](https://theinference.org/markets/companies/western-digital) come to TDK whenever in-house output runs short [3][4]. *Chart: **TDK's head capacity would land inside two of the three drive makers** Pie chart of the hard-drive market: Seagate about 45%, Western Digital about 45%, Toshiba about 10%, with the two reported bidders for TDK's head unit highlighted.* *Approximate shares of the modern hard-drive market, per TechSpot, October 7, 2026. Highlighted makers are those reported in talks to take TDK's head unit. [6]* ## The seller has the date: October 30 Every write-up so far tells the buyers' side. The seller's side holds the timetable. [Short interest in TDK's US line rose 144.8% by October 13](https://www.marketbeat.com/earnings/reports/2026-10-30-tdk-co-stock/), and the September quarter is expected to show revenue up 20%, after a five-cent miss last time [7]. A October 6 analyst note already framed a sale as the way to fund AI-focused growth on the back of a magnetic-head margin turnaround [7]. This would be a sale from strength: two of the three remaining drive makers contesting a unit the market had written off as mature, with Western Digital and antitrust regulators sitting outside the room [3][6]. ## The pricing power sits with the seller Whoever turns a contracted exabyte into a delivered drive is the one creating the value in AI storage, and today that guarantee sits in TDK's factories. Seagate and Toshiba need TDK's heads more than TDK needs either of them: a priced confirmation on October 30 re-rates the seller, and silence hands the story to the shorts. ## Takeaway TDK is the only independent maker of hard-drive heads; Seagate and Toshiba are reported bidding for the unit, and the October 30 earnings call either prices the seller or hands the story to the shorts. ## Sources 1. [Jain.com, With AI Nearline at 90% of Its Exabytes, Seagate Weighs Owning More of Its Head Supply, 17 October 2026](https://www.jain.com/seagate-toshiba-tdk-hdd-magnetic-head-business-acquisition-talks/) 2. [Simply Wall St via Webull, Seagate Technology Holdings (STX) Is Exploring A HDD Head Acquisition, 17 October 2026](https://www.webull.ca/news-detail/15760768474178560) 3. [Forbes, Thomas Coughlin, TDK Head Unit Sale To Toshiba Or Seagate Long Term Implications, 17 October 2026 (corrected 18 October)](https://www.forbes.com/sites/tomcoughlin/2026/10/17/tdk-head-unit-sale-to-toshiba-or-seagate-long-term-implications/) 4. [SDxCentral, Seagate, Toshiba compete to buy the bit that actually records data on their drives: report, 7 October 2026](https://www.sdxcentral.com/news/seagate-toshiba-compete-to-buy-the-bit-that-actually-records-data-on-their-drives-report/) 5. [CoinCentral, Toshiba Fires Back at Seagate Takeover Rumors Over TDK Deal, 6 October 2026](https://coincentral.com/toshiba-fires-back-at-seagate-takeover-rumors-over-tdk-deal/) 6. [TechSpot, Seagate and Toshiba are reportedly fighting to acquire TDK's HDD magnetic-head technology, 7 October 2026](https://www.techspot.com/news/114129-seagate-toshiba-reportedly-fighting-acquire-tdk-hdd-magnetic.html) 7. [MarketBeat, TDK Earnings Date and Estimates, collected 19 October 2026](https://www.marketbeat.com/earnings/reports/2026-10-30-tdk-co-stock/) 8. [BriefAsia, TDK Storage Unit Draws Multiple Suitors as AI Infrastructure Demand Surges, 15 October 2026](https://www.briefasia.com/en/article/tdk-storage-unit-bidding-war-ai-data-centres) 9. [Seagate, quarterly figures from its SEC filings, retrieved 20 October 2026](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001137789) --- TDK owns the one part AI storage cannot do without, and speaks on October 30 — The Inference. Canonical: https://theinference.org/article/tdk-owns-the-one-part-ai-storage-cannot-do-without-and-speaks-on-october-30