Western Digital’s stock is caught in a tug-of-war between extraordinary operational demand and a market suddenly questioning how long the boom can last. The shares have tumbled more than 11% over the past week, with a low-point drop of 16% before a partial recovery brought the price to around €465 — still roughly 33% below the June record of €696.30.
The trigger came not from any Western Digital misstep, but from South Korea. Samsung’s preliminary quarterly results showed operating profit of 89.4 trillion won, nearly 19 times the year-ago figure. Normally a sector-wide vindication, the numbers instead sparked a classic “sell-the-news” reaction. Institutional investors, according to market observers, fear that the memory market has passed its zenith. Morgan Stanley has coined a term for it: the “rate of change peak” — demand remains elevated, but the pace of DRAM and NAND price increases is visibly decelerating.
That deceleration hits Western Digital with particular force. No other stock has ridden the AI wave quite so far: the shares still trade 751% higher year-over-year and nearly 80% above their 200-day moving average of €260.37. The longer-term rally has left the stock vulnerable to sentiment shifts, and a volatility reading of nearly 106% (annualised) underscores the violent swings.
Operationally, however, the picture could hardly be more stretched. Capacity for high-capacity hard disk drives is booked solid through 2026, with some long-term contracts stretching to 2028. The NAND flash business grew 75% quarter-over-quarter, outpacing even the sizzling DRAM segment, as enterprise customers load up on local storage for AI training and inference. Western Digital’s SanDisk subsidiary has publicly raised NAND prices, exploiting the structural shortage that analysts expect to last until at least late 2027 or 2028, given repeated delays in new fab construction.
Should investors sell immediately? Or is it worth buying Western Digital?
Yet several clouds are gathering. The yield on 30-year US Treasuries has pushed above 5%, drawing capital into defensive sectors and away from high-flying AI infrastructure names. Geopolitical tensions in the Middle East add to the macro headwind. On top of that, Western Digital carries convertible debt worth $858.4 million, which upon conversion would dilute existing shareholders by roughly 21.3 million new shares — a weight that grows heavier as the stock price falls.
Competition also looms from an unexpected direction: Chinese startup DeepSeek is reportedly developing its own AI chips, a threat to the oligopolistic structure of the storage market. For bulls, the near-term anchor remains the 50-day moving average at €473.77. A sustained break below that level would darken the chart pattern; a hold could set the stage for a rebound toward the analyst consensus target of roughly €515, implying upside of about 11% from current levels.
The next concrete test comes with Western Digital’s quarterly earnings, expected at the end of July 2026. Strong enterprise SSD sales would support the bull case, while any softening in demand data could send the stock sliding toward the 200-day line. For now, the market is asking a different question than it was six months ago: not how much can Western Digital sell, but how long the growth rate can hold. The answer will determine whether this correction is a pause or a turning point.
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