SK hynix
Kwak Noh-Jung, President and CEO (since March 2022; term through the 2028 annual meeting)
Data verified as of Sep 24, 2026
Summary
SK hynix Inc. is a Korea Exchange-listed memory manufacturer (000660) that also listed American depositary receipts on Nasdaq on July 10, 2026. The company dates its semiconductor business to Hyundai Electronics in 1983. A 2026 SEC filing says the legal entity was established on October 15, 1949, with its head office in Icheon, Gyeonggi Province. SK square Co., Ltd. is the largest shareholder, at 20.50% as of June 30, 2026, after the company joined SK Group in 2012. President and CEO Kwak Noh-Jung leads it. SK hynix sells DRAM, including high-bandwidth memory, and NAND flash. For Q2 2026 it reported 79.3187 trillion won of revenue and 60.5426 trillion won of operating profit, a 76% operating margin, and said mass shipments of HBM4 began in the quarter. Net profit of 93.9226 trillion won included about 63.3 trillion won of gains on investment assets, mostly its Kioxia stake, so the 118% net margin is not a measure of chipmaking profit.
Company OverviewRead the long-form profile of SK hynixMain Products
SK hynix's sixth-generation high-bandwidth memory for AI accelerators. The company said HBM4 met customer operating-speed requirements with what it called industry-leading power efficiency, and that mass shipments began in the second quarter of 2026, with production to ramp in the second half. It also said HBM4 yields and quality were already close to mature HBM3E.
Mass shipments began in Q2 2026. Second-half 2026 ramp announced. Volume and pricing talks for 2027 were still underway at the July 29 earnings call.
The prior high-bandwidth memory generation. SK hynix described it as the mature comparison point for HBM4, saying HBM4 yields and product quality had reached levels close to HBM3E. FY2025 results also said the company had been supplying HBM3E and HBM4.
Treated by the company as the mature HBM generation against which HBM4 yields are compared.
SK hynix's advanced NAND node, including QLC products used in high-capacity enterprise SSDs. The Q2 2026 release said 321-layer products already represent the largest share of NAND production and are planned to reach about 50% of domestic production capacity by the end of 2026. FY2025 results said development of 321-layer QLC products was complete.
Largest share of current NAND production. Domestic capacity share targeted at about 50% by the end of 2026.
What's Next
Operations & Revenue
SK hynix is in production and reported record Q2 2026 results on July 29, 2026: 79.3187 trillion won of revenue and 60.5426 trillion won of operating profit. It said HBM4 mass shipments began in the quarter, with a second-half ramp, and that HBM4E samples had already gone to customers ahead of 2027 volume production. Management guided 2026 capital spending to the high 40 trillion won range, pulled forward M15X, and pointed to the Yongin Phase 1 cleanroom opening in early 2027. Long-term supply agreements with about 10 customers were finished. Cash and equivalents were 88 trillion won at quarter-end. The quarter's 93.9226 trillion won net profit is not comparable with operating profit because it includes about 63.3 trillion won of investment-asset gains, mostly the Kioxia stake.
Revenue Streams
DRAM is the lead memory business. The company said Q2 2026 profitability came from high-value products including HBM and DRAM for AI servers, and that HBM4 mass shipments started in the quarter. FY2025 HBM revenue more than doubled from the prior year. No current DRAM-versus-NAND revenue split was taken from the documents opened for this profile.
NAND is the other memory line. The company said Q2 prices rose for both DRAM and NAND, and that sales of eSSD were part of the high-value mix. It said 321-layer NAND already represents the largest share of NAND production and is planned to reach about 50% of domestic production capacity by the end of 2026.
Key Metrics
- Employees
- More than 48,000 team members worldwide (CEO remarks, July 10, 2026). Not a statutory year-end headcount.
Timeline
SK hynix dates the start of its semiconductor business to Hyundai Electronics in 1983. A 2026 SEC filing separately says the legal entity was established on October 15, 1949, and that its shares have been listed on the Korea Exchange since 1996. The Icheon head office in that filing is 2091 Gyeongchung-daero, Bubal-eup, Icheon-si.
