SK Hynix commits $38B+ to HBM capacity expansion: Yongin Y2 fab and Cheongju M17 fab

The disconnect between SK Hynix's boardroom and its trading floor has rarely been starker. On the same day the memory-chip maker's shares extended a brutal slide that has erased more than half their value from the June peak, the company's directors signed off on one of the largest capital commitments in its corporate history.

The board approved 54.3 trillion won — roughly $38 billion — for two new fabrication plants in Yongin and Cheongju. The Y2 fab in Yongin, a 1.13-million-square-meter facility designed to produce DRAM and HBM chips for the AI market, will receive 35.2 trillion won, with construction beginning in July 2027 and the first cleanroom scheduled for June 2029. The NAND-focused M17 plant in Cheongju carries a 19.1 trillion won price tag, with groundbreaking in February 2027 and cleanroom completion expected in December 2028. The total program, including equipment costs, reportedly exceeds 150 trillion won — roughly 45 percent of SK Hynix's 120.7 trillion won in book equity.

This represents extraordinary conviction in the durability of the AI memory cycle at a moment when markets signal the opposite. On Friday, the stock traded at 1,422,000 won, down 52.39 percent from its June 25 record high and falling 4.88 percent that day alone. The previous Thursday had been worse, with shares collapsing more than 10 percent as the Kospi tumbled 4.58 percent amid a US-led technology selloff. Samsung Electronics lost roughly 6.3 percent but recovered on Friday as investors rotated toward its more diversified business mix.

SK Hynix's second-quarter results, reported July 29, showed revenue of 79.3 trillion won, operating profit of 60.5 trillion won — a 557 percent surge year over year — and net income of 93.9 trillion won, with an operating margin of 76 percent. Yet the market had expected more: analyst consensus called for roughly 64 trillion won in operating profit and 84 trillion won in revenue. That gap triggered a 9.6 percent drop that day, and the shares have struggled since, now trading about 30.14 percent below their 50-day moving average.

Domestic retail investors have remained undeterred, buying a net 4.44 trillion won of SK Hynix shares in the week through Friday, even as foreign investors rotated toward defensive and biotech names like Hanwha Aerospace and Celltrion.

The central debate has shifted from earnings power to capital allocation. SK Hynix announced a quarterly dividend of 375 won per share with an August record date and signaled that additional shareholder returns, potentially including buybacks, could be unveiled in the third quarter. Investor patience has been tested by regulatory mechanics: the company completed an ADR placement that triggered a 25-day quiet period under US securities law, expiring August 4. Management said on July 29 it could not provide details on distribution plans until that process concluded.

Reuters reported Thursday that SK Hynix and Samsung Electronics could together command net liquidity of $263 billion by year-end — more than double Nvidia's net cash position. With AI profits surging, investors are pressing both companies to return a larger share. Management must balance payouts against enormous capital demands for fab expansion, a challenge Samsung and Micron also face.

Coverage initiated after the quiet period ended was notably bullish. On August 4, Cantor Fitzgerald launched coverage with an Overweight rating and a $300 per-ADR price target, implying roughly 100 percent upside. Rosenblatt, Bank of America, UBS, Needham, Stifel, Wolfe Research, and RBC Capital Markets also initiated with buy-equivalent ratings, targeting $200 to $320 per ADR. Barclays' Simon Coles trimmed his target from $330 to $300 on July 29, citing lower expected average selling prices, but maintained an Overweight stance.

Insiders appear to share that conviction. SK Group Chairman Chey Tae-won purchased 4.8 billion won worth of shares on July 31.

The investment offensive also responds to intensifying competition from Beijing. CXMT, the Chinese memory maker, expanded its global DRAM share to 7 percent in the second quarter, while SK Hynix's slipped to 26 percent. CXMT is preparing a Shanghai IPO to fund its HBM development, and South Korea's Industry Minister Kim Jung-kwan has warned that overly generous profit distribution at domestic chip giants could undermine the country's competitive position against CXMT's investment momentum.

Goldman Sachs argues the memory cycle is structurally stronger and longer than previous booms, supporting its 12-month Kospi target of 12,000 points. Omdia projects 19 percent annual growth in the DRAM and NAND markets through 2030.

For the third quarter, SK Hynix guided to DRAM shipments rising roughly 10 percent quarter over quarter, with NAND bit growth in the low single digits. Capital expenditures for the year should reach the high-40-trillion-won range. HBM4 mass production began in the second quarter, with the full ramp targeted for the second half of this year; samples of HBM4E have shipped, with series production targeted for 2027. At the Flash Memory Summit in Santa Clara, the company and SanDisk unveiled initial standards specifications for High Bandwidth Flash and demonstrated a tenth-generation 4D NAND wafer with 375 layers, promising 2.5-fold improvement in performance per watt over the prior generation.

The bet embedded in the board's decision is clear: that AI memory demand will outlast the current market selloff. Whether the stock slide is a correction or a repricing, SK Hynix's management has made its answer unambiguous — they are all in.