A 10% plunge in STX and WDC looks dramatic, but the market may be pricing in a supply problem well before it actually arrives. Toshiba’s expansion is important because it confirms that AI-driven storage demand is strong enough to justify major investment. Yet new HDD capacity cannot instantly become excess supply; equipment, components, yields, customer qualification and hyperscaler contracts all take time.
The real risk is not that AI suddenly stops needing HDDs. It is that by 2027–28, supply growth catches up with demand and erodes today’s pricing power and margins.
For now, I would watch Toshiba’s actual ramp, STX/WDC contract pricing and nearline exabyte growth. Until those indicators deteriorate, this looks more like a forward-looking valuation reset than proof that the HDD cycle has already peaked.
@Tiger_comments [真香]
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