SK Hynix Weighs Major Memory Fab Investment in Japan
SK Hynix is one of the world’s largest memory-chip makers, with manufacturing historically concentrated in South Korea. A fab in Japan’s Miyagi Prefecture would mark the first production base in the country by a South Korean semiconductor company. The potential move would underscore deepening Japan-South Korea supply-chain cooperation as governments compete to attract chip investment and strengthen domestic manufacturing capacity.
South Korean media reported that SK Hynix is considering spending tens of trillions of won to build a memory wafer fabrication plant in Miyagi Prefecture. The reports did not specify the proposed site, production capacity or start-up schedule. As of Aug. 21, 2026, an SK Hynix representative said no decision had been made, indicating the project remains under consideration.
All Coverage
1 original reportsThe Backstory
The history behind this eventSK Hynix Weighs Japan Memory Wafer Fab as AI Demand Surges
The rapid buildout of artificial-intelligence servers is lifting demand for high-bandwidth memory, or HBM, and data-storage products, putting memory capacity and supply-chain resilience at the center of semiconductor competition. South Korea’s SK Hynix is considering a manufacturing foothold in Japan that would place it closer to the country’s materials and equipment suppliers, drawing on the ecosystem model created around Taiwan Semiconductor Manufacturing Co.’s plant in Kumamoto.
SK Hynix is evaluating a memory-wafer fabrication plant in Miyagi Prefecture, though no investment amount, production capacity, product mix or construction schedule had been disclosed as of Aug. 31, 2026. Securing the project would add another major chip investment to Japan after commitments by TSMC and Micron Technology. The review also comes as Washington presses semiconductor companies to expand US production, potentially complicating SK Hynix’s choice of location and allocation of capital.
Subscribe to Mark Radar Weekly
Every Friday, the week's strongest signals in your inbox. Unsubscribe anytime.
If you search news on Google, you can set Mark Radar as a preferred source—our coverage will show up more often in your results. Set as preferred source on Google →