SK Square (402340)
에스케이스퀘어 · KOSPI · Holding company whose main asset is SK Hynix
KOSPI · Price as of · Delayed Quote · Converted at ₩1342 per dollar
- Code402340
- ExchangeKOSPI
- Korean name에스케이스퀘어
- Quoted inKorean won
- US listingNone
- Run byKim Jung-kyu
- Analysts10
- Implied upside+67.5%
- Target range₩1,300,000 to ₩2,280,000
- Target in dollars$1,359
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 | ₩10.5T ($7.8B) | +77.8% against the prior year |
| Net income | ₩8.8T ($6.6B) | 84.4% net margin |
| Capital spending | ₩38.6B | 0.4% of revenue |
| Shares outstanding | 131,876,313 | -6.7% 2022 to 2025, buybacks |
| Cash | ₩1.4T ($1.0B) | Current ratio 2.4 |
| Total debt | ₩92.2B ($68.7M) | Debt to equity 0.2 |
| Forward P/E | 2.6 | On analyst estimates, not on reported earnings |
SK Square closed at ₩1,089,000 on Sep 11, up 6.3% since Aug 12. Daily closes on the KOSPI, in won. Source: Yahoo Finance.
What SK Square does
SK Square is a holding company. Its principal asset is a large stake in SK Hynix, and the rest of the portfolio is a set of smaller technology and platform investments. It does not manufacture anything itself, which means the share price is largely a function of what its stake in a memory company is worth.
Holding companies in Korea typically trade below the sum of what they own, and that discount is the whole argument for owning one. The case for SK Square is that the discount narrows; the case against is that Korean holding company discounts have persisted for a long time and have survived several rounds of governance reform. It is a way to express a view on SK Hynix at a different price, not a different business.
SK Square is run by Kim Jung-kyu (김정규), CEO, since March 2026.
SK Square has no US listing. Buying the shares means buying the Seoul line, which most US brokerage accounts cannot do directly.
SK Square coverage
14 articles
SK Square rose 9% on Wednesday, more than SK Hynix itself. The difference is a payout SK Hynix hasn't announced yet.
On August 13, SK Hynix rose almost 6% with an overnight US chip rally. SK Square, the holding company that owns about 20% of SK Hynix, rose 9%, more than the chipmaker itself. The difference is a payout SK Hynix hasn't announced yet.
Korea's Kospi falls 4% as Hormuz strikes push Brent toward $95
Brent went near $95 after US strikes around the Strait of Hormuz, and the Kospi closed down 3.99 percent. Korea imports about 70 percent of its crude from the Middle East, and its refineries are built so it cannot easily buy it anywhere else.
Why Samsung can't match SK Hynix's massive buyback without forcing its insurers to sell
Samsung Life Insurance and Samsung Fire & Marine together own about 10% of Samsung Electronics' common stock, the exact ceiling set by a Korean banking law. That's the real reason Samsung's record payout leaned on dividends instead of the stock buyback and cancellation SK Hynix just did.
Three days after announcing its record payout, Samsung fell as much as 7.3% Monday morning.
Samsung Electronics fell as much as 7.3% in Seoul trading Monday, three trading days after announcing a record 90 to 110 trillion won ($65.1B to $79.6B USD) payout. SK Hynix, which raised its own payout target the same week, held close to flat.
SK Hynix stock costs $1,248 a share in Korea. Will it follow Samsung with a split?
SK Hynix (SKHY) shares closed at 1.73 million won ($1,248) on Friday. Chairman Chey Tae-won says he would consider a split if enough people ask, though the company's own CEO has downplayed the idea.
Kospi rebounds 5.89% after worst day in weeks as SK Hynix announces $28.6 billion buyback
The Kospi fell 5.80% on Wednesday, its worst day in weeks, then rose 5.89% the next day. SK Hynix's $28.6 billion buyback and easing global interest rates drove one of its sharpest two-day reversals this year.
Other Korean AI listings
| Company | Code | Board | What it makes |
|---|---|---|---|
| SK Hynix | 000660 | KOSPI | HBM memory for AI accelerators |
| 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 |
| 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 Square's stock code?
SK Square trades on the KOSPI in Seoul under the code 402340. Data providers usually write it as 402340.KS. The company has no US listing, so the Seoul line is the only place the shares trade.
Why is SK Square an AI stock?
SK Square is a holding company. Its principal asset is a large stake in SK Hynix, and the rest of the portfolio is a set of smaller technology and platform investments. It does not manufacture anything itself, which means the share price is largely a function of what its stake in a memory company is worth.
What do analysts expect for SK Square?
10 analysts covering SK Square have an average price target of ₩1,824,000 (about $1,359), which is +67.5% 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 Square file with the SEC?
No. SK Square 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.