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Toshiba's $400 million plan to double hard-drive output knocks 10% off Western Digital and Seagate
Western Digital and Seagate each fell 10.2% after Nikkei Asia reported Toshiba will spend $400 million to double its AI hard-drive capacity in fiscal 2027. The bull case now turns on timing, because Toshiba's extra drives reach the price talks only when hyperscalers negotiate 2028 terms.
The Investor · Invest desk
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What happened
- Toshiba, the third-largest maker, holds about 17% of the hard-drive market, against 40% or more each for Western Digital and Seagate.
- Evercore ISI's Amit Daryanani said both incumbents have their 2027 volumes under contract and their 2028 volumes mostly allocated to customers.
- Seagate's fall was its worst single day since July 2, when the stock dropped 10.4%, according to Dow Jones Market Data.
- Toshiba could not be immediately reached for comment by MarketWatch, leaving Nikkei Asia's report as the source for the plan.
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Why it matters
- exposure If the incumbents hold output flat, Toshiba's doubling adds about 17% to industry supply, and hyperscalers can use that in every contract Western Digital and Seagate have not yet signed.
- cost Western Digital shareholders carry the price-war risk: Motley Fool's writer says matching a Toshiba price cut would put the company's projected 68% annual earnings growth at risk.
- contradiction Barchart puts Western Digital at about 23 times forward earnings and Motley Fool at under 18 times, so the claim that the stock already prices in Toshiba depends on whose earnings estimate a buyer uses.
Doubling a share of about 17% [4] adds 17 points to today's market and takes Toshiba to 34. If Western Digital and Seagate ship no more than they do now, the total grows to about 117 points and Toshiba ends near 29% [1], a point short of the 30% nearline target Barchart attributes to it [8]. The same sum puts the new supply at about 17% of what the industry ships today [2], assuming Toshiba's share moves with its capacity.
Seventeen percent more drives sounds like the end of shortage pricing [9], or rather, it ends shortage pricing only if demand runs less than 17% ahead of supply, and none of the three reports puts a number on that gap. Mizuho's Jordan Klein said demand is far enough ahead of supply that he is not yet worried about customers moving away from Seagate [10]. Seagate "has a major technology lead over Toshiba" and Western Digital, he said [11].
The Philippines expansion is Toshiba's first meaningful hard-drive investment in half a decade [12]. The incumbents' pricing power [9] was built in a market whose third producer had stopped spending on capacity.
Friday's defences were about dates. Given Daryanani's contract picture [5], Klein's call that the extra supply will likely not touch contract discussions before 2028 follows, though he also said it is unclear how much capacity Toshiba can add or how fast [13]. Toshiba "can only grow as fast as its suppliers do," Evercore ISI's Amit Daryanani said [14]. He pointed to glass, which could take several months, while Seagate and Western Digital make some of their own components [15]. Barchart notes that Toshiba buys recording media and heads from outside suppliers [16].
That leaves three ways this goes. Toshiba's suppliers slip, its drives miss the 2028 talks, and the Motley Fool writer who wrote "I think today's sell-off is an overreaction" is proved right [17]. Or the drives arrive on schedule and hyperscalers use them in the unallocated part of 2028; Klein said the report will likely make investors question whether the two can hit upbeat gross-margin expectations [18]. Or Toshiba cuts prices to fill the plant, the price-war case [19].
I think the second is the likeliest. The contracts cover volumes already sold, and the next tranche gets priced with Toshiba's drives on offer. Klein's demand argument is the case against: if the gap is wider than 17% [2], Toshiba's output is absorbed at current prices [10]. I am wrong if the 2028 and 2029 contracts sign at flat or higher prices after Toshiba's new capacity is running.
The share price already carried doubt. Western Digital trades at more than twice its start-of-year price and nearly 45% below its year-to-date high [20], so at the peak it traded at roughly 3.6 times its start-of-year price [3].
What to watch
- Confirmation from Toshiba of the $400 million figure and of whether the doubling lands inside fiscal 2027.
- Toshiba's orders with outside suppliers of glass, recording media and heads, the first evidence of how fast the Philippines capacity can ramp.
- Prices in hyperscaler contracts covering the unallocated part of 2028 and 2029, set against Western Digital and Seagate gross-margin guidance.