Semiconductor stocks fell sharply after reports suggested major cloud providers may be slowing AI infrastructure spending and have excess capacity to lease out, signaling potential overcapacity in the chip market. The Philadelphia Semiconductor Index plunged over 7%, with concerns that years of assumed insatiable demand for AI chips may be cooling and future GPU and memory orders could shrink.
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The Philadelphia Semiconductor Index fell over 7% after reports that Meta plans to sell access to its AI computing power and concerns emerged that large cloud platforms may be slowing AI infrastructure spending. Shares of onsemi, Skyworks Solutions, and Microchip Technology fell 5.1%, 5.7%, and 6.2% respectively. A Citi analyst also questioned whether cloud platforms can demonstrate returns on their AI infrastructure investment.
Why it matters
For two years, the semiconductor sector has traded on the assumption of an insatiable GPU and memory shortage. If major cloud providers like Meta—which guided to as much as $145 billion（約23兆円） of capex this year—now have enough spare capacity to lease out, the market reads that as a signal hyperscalers may have over-built, potentially shrinking future orders for GPUs, high-bandwidth memory, and NAND chips.
What to watch
Microchip Technology's stock has had 17 moves greater than 5% over the last year, making today's drop meaningful but not necessarily a fundamental shift in the market's view. A similar 7.7% drop occurred 9 days ago when reports of SK Hynix's slowed high-bandwidth memory expansion triggered selling across Asia, Europe, and the U.S.
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