SK Hynix IncSK Hynix is deliberately slowing its HBM4 ramp to redirect capacity into conventional DRAM.
Shares of MACOM, Semtech, and Photronics fell sharply in afternoon trading after a report that South Korea's SK Hynix is slowing its high-bandwidth memory expansion rattled the AI-chip complex. MACOM dropped 7.2%, Semtech fell 7%, and Photronics declined 7.3%. The underlying report indicated SK Hynix is deliberately slowing its HBM4 ramp to redirect capacity into conventional DRAM, where shortages have pushed operating margins more than 15 points above HBM's, rather than signaling a demand slowdown. The broader sell-off also reflected profit-taking after a parabolic run in memory stocks, with Micron down 11% while logic-heavy Nvidia fell only about 3.6%, as traders priced in 50 basis points of Federal Reserve rate hikes by December under new Chair Kevin Warsh, making debt-funded AI capital expenditure harder to justify at record valuations.
SK Hynix IncSK Hynix is deliberately slowing its HBM4 ramp to redirect capacity into conventional DRAM.
MACOM Technology Solutions Holdings IncSK Hynix slowing HBM expansion signals weaker near-term demand for MACOM's HBM-related products.
Photronics IncSK Hynix slowing HBM expansion reduces demand for Photronics' photomasks used in HBM production.
Semtech CorporationSK Hynix slowing HBM expansion lowers demand for Semtech's chips used in HBM modules.
Micron Technology Inc
Samsung Electronics Co Ltd
NVIDIA Corporation