000660 - SK hynix Inc.

000660 Summary
Semiconductors
Stock Price & Overview
₩1,678,000 +7,000 (+0.42%) Close · Aug 25, 2026 KST
KOSPI | ₩KRW | Close: ₩1,678,000  ≈ US$1,199  ·  Market cap ₩1,225.8tn (≈ $875.5bn)

000660 Stock Price

1D5D1M6MYTD1Y5YMAX
₩1.0M₩2.0M₩3.0Mpeak ₩2.92MSepOctNovDecJan ’26FebMarAprMayJunJulAug
52 Week Range
₩256,000₩2,919,000
Day Range
₩1,557,000₩1,687,000
Market Cap
₩1,225.8tn
Volume
4,029,660
P/E (TTM)
28.5x
P/B
4.67x
Shares Out
730.5M
Prev. Close
₩1,671,000
P/E and P/B are calculated from the close and the company's own filed EPS and book value per share — they are not vendor figures.

000660 Factor Grades

?How we grade »
GradeNow3M6M
Valuation
P/E 28.5x, P/B 4.67x against its own 3-year history
CC+B-
Growth
Revenue +46.8% FY25, +101.9% FY24
A+A+A
Profitability
Operating margin 48.6% FY25
AA-B+
Financial Health
Debt/Equity 0.46, cash ₩14.9tn
B+BB
Momentum
+547% 12m, but −42% from the July peak
A-B+C+
Computed from DART filings and KRX closes — arithmetic, not opinion. The Now column is not locked and there is no buy/sell rating beside it. Scoring model not final — the grades shown are illustrative.

000660 Filings

See all »
ks

A ₩40.0tn buy-and-cancel that fixes the money, not the share count

The board approved buying ₩40.0tn (~$28.4bn) of its own stock on the open market over 91 days and retiring all of it — 3.3% of market cap. The 24.07m share figure printed in the filing is derived from the current price and shrinks if the stock rises.

Buyback08/19/26DART original
₩40.0tn≈ $28.6bn
DART

Insider / Major Shareholder Holdings Report ×8

Ownership08/21/26Korean original
DART

Change in the Largest Shareholder's Holdings

Ownership08/21/26Korean original
DART

Treasury Share Disposal — Result Report

Buyback08/21/26Korean original
Korean issuers file to DART, not the SEC. Titles are translated; where kstock has read the filing the row carries the explanation.

000660 Company Profile

SK hynix designs and manufactures memory semiconductors — DRAM, NAND flash and, since 2023, high-bandwidth memory (HBM) stacks used in AI accelerators. It is the second-largest memory maker in the world after Samsung Electronics and the primary HBM supplier to Nvidia. It is majority-controlled by SK Square, part of the SK Group, one of Korea's four largest business groups.

SectorSemiconductorsEmployees~32,000
MarketKOSPIFounded1983
Korean name에스케이하이닉스Head officeIcheon, Gyeonggi-do, Korea

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What a US investor should know

  • Trading hours09:00–15:30 KST — 20:00–02:30 US Eastern the night before.
  • Daily limitKorean stocks can move at most ±30% in a session before trading halts.
  • Getting exposureKRX shares are not directly tradable in most US brokerage accounts. The usual routes are Korea ETFs or an international account.
  • ReportingKorean issuers file to DART, not the SEC. Half-year and quarterly reports land about 45 days after period end.