Marvell Technology Shares Slide 4% as Chip Rout Spreads; AI Demand Fears Overblown

Marvell Technology (NASDAQ: MRVL) shares dropped 4.1% in afternoon trading Thursday, dragged down by a cascading selloff that began in Asia and swept through global semiconductor stocks. The trigger was a leveraged unwind in South Korean chipmakers, combined with renewed skepticism about debt-funded AI capital spending and a hawkish shift in Federal Reserve rate expectations.

The rout started after a local media report suggested SK Hynix is slowing its expansion of high-bandwidth memory (HBM) and shifting focus toward cheaper commodity DRAM. While SK Hynix declined to comment, investors read the report as a caution flag on AI data-center demand, sparking a 10% plunge in South Korea’s KOSPI index — which had surged roughly 95% year-to-date — and triggering a 20-minute market-wide circuit breaker. SK Hynix and Samsung each fell more than 10%.

The selling quickly spread to Europe, where ASML dropped 5% and Infineon, ASM International, and STMicroelectronics lost 5% to 8%. In the U.S., the Philadelphia Semiconductor Index opened down roughly 7% just a day after closing at a record high. Micron Technology, up roughly 300% since the start of the year, fell 11%, while Nvidia — a logic-heavy name — slipped only about 3.6%, underscoring the memory-specific nature of the selloff.

Compounding the pressure was a hawkish repricing under new Federal Reserve Chair Kevin Warsh. Market-implied odds of a second rate hike in 2026 rose to about 85% from roughly 60%, making debt-funded AI capital spending harder to justify at record valuations. Analysts at Wedbush described the drop as a buying opportunity, noting that enterprise demand for AI infrastructure remains intact.

Despite the selloff, Marvell Technology’s shares remain up 196% year-to-date, though they trade at $264.50 — 16.4% below their 52-week high of $316.43 from June 2026. An investor who bought $1,000 worth of shares five years ago would now have an investment worth $4,711.

The episode highlights a pattern of market overreaction to headline risk. The chatter around SK Hynix’s HBM shift is less about waning AI demand and more about a margin story: Korean analysts estimate the operating-margin gap between conventional DRAM and HBM has widened to more than 15 points, prompting SK Hynix to redirect capacity into higher-margin commodity products. All three major memory makers are keeping supply tight — Samsung flagged a 146% jump in DRAM average selling prices in the first quarter, while SK Hynix reported mid-60% growth — so pricing power remains squarely with sellers.

Marvell shares have experienced 41 moves greater than 5% over the past year, indicating that Thursday’s decline, while notable, does not fundamentally alter the company’s business outlook. The broader narrative remains tied to AI infrastructure buildout, where Marvell’s networking chips play a critical role in data-center connectivity.

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