SK Hynix (000660)
SK하이닉스 · KOSPI · HBM memory for AI accelerators
KOSPI · Price as of · Delayed Quote · Converted at ₩1342 per dollar
- Code000660
- ExchangeKOSPI
- Korean nameSK하이닉스
- Quoted inKorean won
- US listingSKHY
- Run byKwak Noh-jung
- Analysts38
- Implied upside+76.5%
- Target range₩1,535,000 to ₩5,300,000
- Target in dollars$2,382
Reported fundamentals
There is no stock score on this page. The score is computed from audited XBRL filings on SEC EDGAR and includes a 20-point insider component built from Form 4s, and a Korean company files neither, so a grade here would be measuring something different from the same letter on a US hub. These are the reported figures instead.
| Revenue | ₩97.1T ($72.4B) | +46.8% against the prior year |
| Net income | ₩42.9T ($32.0B) | 44.2% net margin |
| Capital spending | ₩28.6T | 29.4% of revenue |
| Shares outstanding | 701,691,520 | +2.0% 2022 to 2025, dilution |
| Cash | ₩38.7T ($28.8B) | Current ratio 17.2 |
| Total debt | ₩3.2T ($2.4B) | Debt to equity 72.1 |
| Forward P/E | 3.8 | On analyst estimates, not on reported earnings |
SK Hynix closed at ₩1,812,000 on Sep 11, up 20.5% since Aug 12. Daily closes on the KOSPI, in won. Source: Yahoo Finance.
What SK Hynix does
SK Hynix is a memory chipmaker and the largest supplier of high bandwidth memory, the stacked DRAM that sits beside a GPU and feeds it data. Every AI accelerator needs it, and there are only three companies in the world that make it. That position is why a memory company that used to trade on the commodity DRAM cycle now trades on AI demand.
The company sells the rest of its output as conventional DRAM and NAND flash, which still moves with the ordinary memory cycle. Management has said its long-term agreements with more than ten customers run three to five years and cover roughly half of revenue, with prices moving inside an agreed band rather than floating with the spot market. That structure is the mechanical reason a spot price spike does not flow through to SK Hynix the way it does to a competitor selling into the open market.
SK Hynix is run by Kwak Noh-jung (곽노정), President and CEO, since March 2022.
SK Hynix also has a Nasdaq listing, SKHY, where one American depositary share represents 0.1 of an ordinary Seoul share. It is a separate security with its own price and its own premium or discount to Seoul, so the two do not move by the same percentage on a given day.
SK Hynix coverage
All 202 articles
Samsung and SK Hynix memory inventories fall below 10 days, KB Securities says. Kospi rally nears 7,000.
Foreigners and institutions bought a net 5.2 trillion won on Monday while individuals sold 6.8 trillion. KB Securities' Kim Dong-won says memory inventory at Samsung and SK Hynix is under 10 days and the stocks trade at three times 2027 earnings.
Samsung and SK Hynix (SKHY) plan a memory expansion bigger than CXMT's entire projected capacity
A Bank of Korea report dated September 2 says Samsung's P4 and P5 fabs and SK Hynix's Yongin fab will add more than 600,000 wafers a month of memory capacity from 2028. China's CXMT is expected to reach 500,000 to 600,000 in total from the same year, and its shipments run far below its capacity. The bank still calls China a long-term threat.
SK Hynix's (SKHY) HBM share falls to 50% as Samsung gains ground
Counterpoint Research's second-quarter numbers put SK Hynix at 50 percent of HBM revenue, down from 58 percent in the first quarter and 64 percent a year earlier. Samsung went from 15 percent to 33 percent over the same year, and most of its sales are still HBM3E, with HBM4 only starting to count in the second half.
Samsung and SK Hynix sold their memory years in advance. Buyers left out now pay up to 5 times the contract price.
A 36-gigabyte HBM3E chip sells for about $2,100 on the spot market, while long-term contract customers pay 500,000 to 700,000 won ($360 to $500 USD). Korea's HBM export price passed $70 for the first time in July.
SK Hynix (SKHY) breaks ground on $4 billion Indiana HBM plant as production slips to 2029
SK Hynix broke ground Thursday on its first US plant, an advanced packaging site for AI memory in West Lafayette, Indiana. The company now targets mass production in the second half of 2029. Its CHIPS Act award said 2028.
China's YMTC is raising $4.9 billion to chase Samsung and SK Hynix in NAND. It just passed Kioxia to become the world's third-largest producer
China's top NAND maker YMTC filed to raise about $4.9 billion and just passed Kioxia into third place in the market. The threat to Samsung and SK Hynix is real, but it sits in the cheaper part of the memory business.
Other Korean AI listings
| Company | Code | Board | What it makes |
|---|---|---|---|
| Samsung Electronics | 005930 | KOSPI | Memory, foundry and the broader electronics business |
| Hanmi Semiconductor | 042700 | KOSPI | Thermal compression bonders for HBM stacking |
| HPSP | 403870 | KOSDAQ | High-pressure annealing equipment |
| Wonik IPS | 240810 | KOSDAQ | Deposition and etch equipment for memory |
| Leeno Industrial | 058470 | KOSDAQ | Test probes and probe cards |
| Samsung Electro-Mechanics | 009150 | KOSPI | FC-BGA package substrates and MLCCs |
| Naver | 035420 | KOSPI | Korea's search platform and HyperCLOVA X |
| LG Innotek | 011070 | KOSPI | Camera modules and package substrates |
| Simmtech | 222800 | KOSDAQ | Package substrates for memory |
| Techwing | 089030 | KOSDAQ | Memory test handlers |
| Hana Micron | 067310 | KOSDAQ | Semiconductor packaging and test |
| ISC | 095340 | KOSDAQ | Test sockets |
| Jusung Engineering | 036930 | KOSDAQ | Atomic layer deposition equipment |
| Soulbrain | 357780 | KOSDAQ | Process chemicals for chipmaking |
| Samsung SDS | 018260 | KOSPI | IT services, cloud and data centers |
| SK Square | 402340 | KOSPI | Holding company whose main asset is SK Hynix |
| Kakao | 035720 | KOSPI | Messaging platform building consumer AI |
| HD Hyundai Electric | 267260 | KOSPI | Transformers and switchgear |
| LS Electric | 010120 | KOSPI | Power distribution and automation |
| Hyosung Heavy Industries | 298040 | KOSPI | Transformers and heavy electrical equipment |
| Doosan Enerbility | 034020 | KOSPI | Power plant equipment, turbines and nuclear components |
Frequently asked questions
What is SK Hynix's stock code?
SK Hynix trades on the KOSPI in Seoul under the code 000660. Data providers usually write it as 000660.KS. SK Hynix also has a Nasdaq listing, SKHY, where one American depositary share represents 0.1 of an ordinary Seoul share. It is a separate security with its own price and its own premium or discount to Seoul, so the two do not move by the same percentage on a given day.
Why is SK Hynix an AI stock?
SK Hynix is a memory chipmaker and the largest supplier of high bandwidth memory, the stacked DRAM that sits beside a GPU and feeds it data. Every AI accelerator needs it, and there are only three companies in the world that make it. That position is why a memory company that used to trade on the commodity DRAM cycle now trades on AI demand.
What do analysts expect for SK Hynix?
38 analysts covering SK Hynix have an average price target of ₩3,197,604 (about $2,382), which is +76.5% against the last close. Coverage of Korean listings is overwhelmingly domestic, so these are Korean brokerage estimates rather than the US sell-side names that cover an American chip stock.
Does SK Hynix file with the SEC?
No. SK Hynix is a Korean company listed in Seoul, so it reports to the Korea Exchange and the Financial Supervisory Service, not the SEC. That is why this page has no filings, Form 4 insider or congressional trading sections: those are built from EDGAR, which has nothing on a company that does not file there.