SK Hynix has approved $38 billion in new memory fabrication facilities, though output will not begin until December 2028, highlighting extended lead times for advanced memory capacity.

SK Hynix’s board has approved two new fabrication plants—the Yongin Y2 fab and the Cheongju M17 facility—at a combined cost of 54.3 trillion won, approximately $38 billion. The M17 facility, dedicated to NAND flash memory, targets its first cleanroom opening in December 2028. The Y2 fab, designed for DRAM and high-bandwidth memory (HBM), aims for June 2029. Management noted that customer demand currently exceeds the company’s supply capabilities.

SK Hynix (NASDAQ: SKHY) is committing a historic sum to expand capacity. On August 7, the board authorized 54.3 trillion won in capital expenditure across the two new facilities. Of this total, 35.2 trillion won is allocated to the Y2 fab in Yongin, which will produce high-bandwidth memory (HBM) and next-generation DRAM. The remaining 19.1 trillion won will fund the M17 facility in Cheongju for NAND flash memory production.

The project timelines present a notable delay. Groundbreaking for M17 is scheduled for February 2027, with its first cleanroom not expected until December 2028. Y2 will break ground in July 2027, targeting a first cleanroom opening in June 2029. Since cleanroom completion precedes equipment installation and volume shipments, the earliest either facility can begin operations is nearly two and a half years away.

In a memory market where prices have surged amid tight supply, the lag between capacity approval and actual production stands out as the most critical detail in the announcement. The two projects target distinct segments of the memory market and follow separate schedules. M17, the NAND facility, is the closer timeline, with construction beginning in early 2027 and capital deployment continuing through April 2031. Y2 represents the larger commitment at 35.2 trillion won, with expenditures planned through October 2031. It will focus on HBM and next-generation DRAM—chips that power artificial intelligence (AI) processors and drove the company’s record-breaking second quarter. Consequently, M17’s first cleanroom will open roughly six months before Y2’s. Regardless, the timeline stretches across multiple years.

SK Hynix framed the capital allocation as a response to surging demand. "This investment is a decision made to seize opportunities in line with the market's growth speed," the company stated in its announcement. This urgency is underscored by the financial results SK Hynix reported a week prior. Second-quarter revenue totaled 79.3 trillion won, representing a 51% increase from the first quarter and a 257% jump year-over-year. Operating profit reached 60.5 trillion won, pushing the operating margin to a record 76%. Both DRAM and NAND flash prices rose sharply from Q1, and first-half revenue surpassed 100 trillion won (approximately $70 billion) for the first time in corporate history. Additionally, the company initiated mass shipments of HBM4, its latest high-bandwidth memory product, and confirmed it has secured long-term agreements with roughly ten key customers. Despite these figures, existing output remains insufficient to meet demand. Management explicitly noted during the second-quarter earnings update that customer demand continues to exceed supply capabilities.

Any incremental supply SK Hynix can realistically deploy before 2029 will stem from projects already underway—specifically the M15X fab and Phase 1 of the Yongin cluster, which will see its cleanroom complete in early 2027—rather than from the newly approved facilities. Memory prices have climbed due to constrained supply amid sustained purchasing by cloud computing giants and AI infrastructure developers. These new fabs likely represent the clearest indication yet of how long SK Hynix anticipates this shortage to persist. A company would not commit $38 billion to facilities whose cleanrooms do not open until late 2028 and mid-2029 unless it forecasts robust demand upon their activation.

Conversely, the schedule implies significant constraints on near-term pricing. No output from either new plant will reach the market before December 2028 at the earliest. Any moderation in memory prices prior to that date must therefore originate from facilities already under construction, technological upgrades within existing plants, or a slowdown in demand—a limited set of variables.

On Thursday, August 13, shares closed at approximately $166, marking a 7% daily gain. The stock’s peak since its July listing stands at $194.80, roughly 18% higher than the recent close. The stock currently trades at roughly eight times trailing earnings, compressing to below four times forward analyst estimates—a valuation that appears to price in a rapid deceleration of the current cycle. However, the extended construction timeline contradicts that bearish assumption. Such a delayed supply influx could sustain tight pricing well beyond what a sub-4 multiple reflects. Historically, memory cycles have penalized aggressive capacity expansions, with demand shifts rather than construction delays typically driving market surprises. Nevertheless, for at least the next two years, additional capacity from these specific fabs will not materialize.

Before you buy stock in SK Hynix, consider this:

The Motley Fool Stock Advisor analyst team just identified what they believe are the 10 best stocks for investors to buy now… and SK Hynix wasn’t one of them. The 10 stocks that made the cut could produce monster returns in the coming years.

Consider when Netflix made this list on December 17, 2004... if you invested $1,000 at the time of our recommendation, you’d have $421,511!* Or when Nvidia made this list on April 15, 2005... if you invested $1,000 at the time of our recommendation, you’d have $1,381,960!*

Now, it’s worth noting Stock Advisor’s total average return is 981% — a market-crushing outperformance compared to 216% for the S&P 500. Don’t miss the latest top 10 list, available with Stock Advisor, and join an investing community built by individual investors for individual investors.

*Stock Advisor returns as of August 15, 2026.

Daniel Sparks and his clients do not have positions in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.