SK Hynix's $39B Fab Investment Lifts Korean Chip Equipment Makers

SK Hynix-linked chip-equipment makers rallied on August 10 after SK Hynix's board confirmed a roughly 54 trillion won ($39 billion) investment in two new fabs: Yongin Y2 and Cheongju M17. Shares of suppliers YEST and Jusung Engineering jumped as much as 15% and 13.4% intraday, with Wonik IPS up nearly 11%, as investors priced in a wave of tooling orders tied to the buildout.

The investment splits roughly 35.2 trillion won for Yongin Y2 and 19.1 trillion won for Cheongju M17, formalizing capex SK Hynix had signaled earlier this year as AI data-center demand strains global HBM and NAND supply. Groundbreaking for Y2 targets mid-2027, with cleanrooms following in 2029, a buildout that could reshape the competitive balance with Samsung and MU in high-bandwidth memory.

The fab news landed alongside another supply-side signal: SK Hynix's Solidigm-run Dalian NAND plant in China resumed equipment installation after roughly four years idle, a move expected to lift local NAND capacity by about 50%, to around 150,000 wafers per month once new V8 (238-layer) lines ramp. Elevated options and equity trading activity in SK Hynix accompanied the announcement window.

SK Hynix shares have been among 2026's standout AI-memory trades, up sharply over the past year on HBM demand from customers including NVDA, even as the broader chip complex traded volatile on unrelated geopolitical headlines this month. Investors could watch whether the capex sustains memory pricing and whether suppliers convert the order pipeline into revenue.

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