High-bandwidth memory (HBM) is a high-speed memory used in AI accelerators to improve data processing performance.

Were other stocks in the sector affected?

Yes, shares of Nvidia and AMD also fell, and the Philadelphia Semiconductor Index declined 1.8%.

Marvell, Himax, IPG Photonics Stocks Fall on HBM Expansion Slowdown

Shares of Marvell Technology (MRVL), Himax (HIMX), and IPG Photonics (IPGP) fell in afternoon trading after a report that South Korea's SK Hynix is slowing its high-bandwidth memory (HBM) expansion, rattling the AI-chip complex.

June 23, 2026

2 min read

Source: StockStory

Potential Causes

The decline followed a Reuters report citing sources that SK Hynix, the world's largest HBM producer, is considering slowing its expansion plans due to weaker demand from some AI customers. HBM is a critical component in AI accelerators from companies like Nvidia, and any slowdown in its production could ripple through the supply chain.

Context

Marvell Technology shares are down 15% over the past month, while Himax and IPG Photonics have lost 10% and 8%, respectively. The latest drop adds to broader concerns about AI infrastructure spending after earlier reports of cutbacks by major tech firms.

Similar Moves in the Sector

Losses were not limited to these three stocks. Other chipmakers like Nvidia (NVDA) and AMD (AMD) fell 2% and 1.5%, respectively. The Philadelphia Semiconductor Index (SOX) declined 1.8%.

Frequently Asked Questions

Marvell Technology shares fell after reports that SK Hynix is slowing its HBM expansion, raising concerns about AI chip demand.

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This article was rewritten in Wrqti's editorial style based on information from the original source above. Content is informational only — not investment advice.