SK Hynix (000660)
SK Hynix (000660) is a memory-chip maker producing DRAM, NAND flash, and high-bandwidth memory, and it is the leading HBM supplier for AI accelerators, shipping the bulk of Nvidia’s high-bandwidth memory. In ETFpedia it is the single most critical Korean node in the AI supply chain within the Korea Manufacturing Core Alliance theme.
| Ticker | 000660 |
|---|---|
| Exchange | KOSPI |
| Sector | Technology · Memory Semiconductors (DRAM, NAND, HBM) |
| Country | South Korea |
| Wikidata | Q370719 |
| Last updated | 2026-06-04 |
Next event:Next report · H1 2026 반기보고서 (semi-annual report), estimated · Estimated from Korea's 45-day semi-annual filing deadline; not company-confirmed. Last report: Q1 2026 분기보고서 filed 2026-05-15. (source)
Latest reported quarter:Q1 2026 (ended Mar 31, 2026) (reported2026-05-15)
SK Hynix posted record Q1 2026 revenue of ₩52.58 trillion, up 198% year over year, and record operating profit of ₩37.61 trillion, up 405%, for a 72% operating margin, as AI infrastructure demand drove HBM, server DRAM, and eSSD sales. Net income reached ₩40.35 trillion.
| Revenue | ₩52.58T+198%YoY · First quarter above ₩50T |
|---|---|
| Operating profit | ₩37.61T+405%YoY · 72% operating margin; company record |
| Net income | ₩40.35T+398%YoY |
Recent & upcoming events
- · Record FY2025 results filed.Full-year 2025 revenue of ₩97.15T (+47%), operating profit ₩47.21T (+101%), and net income ₩42.95T (+117%), as the HBM boom drove a record year. (source)
- · Record Q1 2026 results.Revenue passed ₩50T for the first time on AI demand; the company reported ₩7.78T of Q1 sales to Nvidia, about 14.8% of total revenue. (source)
Consolidated quarterly and annual figures are from the DART 분기보고서/사업보고서. SK Hynix does not disclose a fixed HBM revenue segment; product mix commentary is from its earnings releases.
Figures are as of 2026-05-15 and reflect the most recent public filings/IR releases; they are updated after each earnings report.
What does SK Hynix do?
SK Hynix makes memory chips. Its three product lines are DRAM (working memory), NAND flash (storage), and high-bandwidth memory (HBM), which is stacked DRAM that sits next to a GPU so the chip is not starved of data. HBM is what makes SK Hynix matter for AI. It was first to mass-produce the leading HBM3E generations and supplies most of the high-bandwidth memory inside Nvidia’s accelerators. The dependency runs deep enough that the company sold ₩7.78 trillion to Nvidia in Q1 2026 alone, about 14.8% of total revenue (SK Hynix newsroom). On top of HBM, it sells high-capacity server DRAM modules and enterprise SSDs that data centers buy by the rack.
Why is SK Hynix a Korea manufacturing company?
The Korea Manufacturing Core Alliance theme is about Korean industrial firms that a US-aligned supply chain cannot easily replace, and SK Hynix is the clearest case. HBM is a three-supplier market, and SK Hynix leads it. Analysts have put its share above 50% and as high as roughly 62% of HBM shipments through 2026 (Astute Group). Because every AI accelerator needs HBM and SK Hynix supplies most of it, the company is effectively the memory bottleneck the AI build-out runs through. Demand has been strong enough that it reportedly sold out its 2026 output to Nvidia and others well ahead of time (CNBC).
What did SK Hynix report most recently?
In Q1 2026 (the quarter ended March 31, 2026), SK Hynix posted record revenue of ₩52.58 trillion, up 198% year over year, the first quarter it ever passed ₩50 trillion, with record operating profit of ₩37.61 trillion, up 405%, at a 72% operating margin, and net income of ₩40.35 trillion, up 398% (DART 분기보고서).
“Despite Q1 being a seasonally weak period, strong demand continued on expanded AI infrastructure investment, driving increased sales of high-value products such as HBM, high-capacity server DRAM modules, and eSSD.”
For the full year 2025, SK Hynix reported revenue of ₩97.15 trillion (+47%), operating profit of ₩47.21 trillion (+101%), and net income of ₩42.95 trillion (+117%) (DART 사업보고서), a record year built on the HBM boom that carried straight into the Q1 2026 acceleration.
What are the risks for SK Hynix?
- Memory cycles. Memory pricing swings hard. The HBM and DRAM strength behind record 2026 profit can reverse fast if AI demand cools or supply catches up.
- Customer concentration. A large slice of revenue runs through a handful of AI accelerator customers, with Nvidia the single biggest, so a change in their roadmaps or order pace would land directly on SK Hynix.
- HBM4 competition. The next battle is HBM4, where Samsung and Micron are pushing to close the gap; leadership in one generation does not guarantee the next.
- Geopolitics. As a Korean memory maker with US and Chinese exposure, SK Hynix is sensitive to export controls, tariffs, and the rules of a decoupling chip supply chain.
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Frequently asked questions about SK Hynix
What does SK Hynix do?
SK Hynix is a memory-semiconductor maker. It produces DRAM, NAND flash, and high-bandwidth memory (HBM), the stacked DRAM that sits next to AI accelerator chips. It is the leading HBM supplier and ships the bulk of Nvidia's high-bandwidth memory. In Q1 2026 it sold ₩7.78 trillion to Nvidia alone, about 14.8% of total revenue (SK Hynix newsroom).
Why is SK Hynix part of the Korea manufacturing theme?
SK Hynix is the single most critical Korean node in the AI hardware supply chain. As the dominant HBM supplier, it is the memory bottleneck that AI accelerators run through, which makes it structurally hard to design out of a US-aligned chip supply chain. Industry analysts have placed its HBM share above 50% and as high as roughly 62% of shipments through 2026 (Astute Group).
What was SK Hynix's latest revenue?
SK Hynix reported record revenue of ₩52.58 trillion in Q1 2026 (the quarter ended March 31, 2026), up 198% year over year, with record operating profit of ₩37.61 trillion (+405%) at a 72% operating margin, and net income of ₩40.35 trillion (+398%) (DART 분기보고서). It was the first quarter the company passed ₩50 trillion in revenue.
When does SK Hynix next report earnings?
Korean issuers do not pre-announce earnings dates. SK Hynix's next regulatory filing is the H1 2026 반기보고서 (semi-annual report), due around August 14, 2026 under Korea's 45-day semi-annual deadline. That date is estimated, not company-confirmed. SK Hynix last filed its Q1 2026 분기보고서 on May 15, 2026 (DART).
Sources & references
- SK하이닉스 분기보고서 (2026.03) · Q1 2026 quarterly report · SK Hynix / DART (FSS), 2026-05-15
- SK하이닉스 사업보고서 (2025.12) · FY2025 annual report · SK Hynix / DART (FSS), 2026-03-17
- SK하이닉스, 2026년 1분기 경영실적 발표 (Q1 2026 business results) · SK Hynix Newsroom, 2026-04-23
- SK Hynix holds 62% of HBM, Micron overtakes Samsung, 2026 battle pivots to HBM4 · Astute Group, 2026-01-15
- SK Hynix, a critical Nvidia supplier, has already sold out chips for 2026 as AI demand booms · CNBC, 2025-10-29