SK
Daily close in US$ at the latest USD/KRW close. Source: KRX via FinanceDataReader.
SK Inc.
is the holding company at the center of the SK group, one of South Korea's largest conglomerates. It owns and oversees major affiliates spanning energy and chemicals, semiconductors, telecommunications, and materials, and it also makes its own bets in areas such as advanced materials and biotechnology. Rather than running a single product line, it allocates capital across the group's businesses and new ventures.
Summary is AI-generated and may contain errors · figures from DART filings
As the group's holding company, its value largely reflects the affiliates and investments it owns rather than a single operating business.
SK in five facts
What does SK do?
SK Inc.
Where is SK listed and in which sector?
SK (Korean name: SK) trades under KRX code 034730 on KOSPI, the main board of the Korea Exchange. It is classified in the Financials sector, Diversified Financials.
How large is SK?
Its market capitalisation was US$26.4B on 2026-10-21, which puts it in this site's large-cap group. US$ amounts are converted from won at 1 USD ≈ ₩1,325 (2026-10-21).
What were SK's latest annual revenue and operating profit?
For fiscal year 2025, SK reported revenue of US$92.6B, operating profit of US$1.4B and net income of US$2.7B, per its annual report on DART (data retrieved from DART on 2026-09-08). Revenue was down 1.6% on the previous year.
Where does this data come from?
Financial statements and filings come from DART, Korea's official corporate-filing system. Share prices, market capitalisation and trading status come from KRX. Company summaries are AI-generated from the filings and may contain errors; financial figures are mapped directly from DART.
Data sources and last updated
- Filings and financial statements
- DART (dart.fss.or.kr), Korea's official corporate-filing system
- Prices, market cap, trading status
- KRX (Korea Exchange), via FinanceDataReader
- Latest annual financials
- Fiscal year 2025, data retrieved from DART on 2026-09-08
- Share price and market cap
- Close of 2026-10-21
- Currency
- US$, converted from won at 1 USD ≈ ₩1,325 (2026-10-21 close)
- Company data updated
- 2026-10-21
- Company summary
- AI-generated from filings; may contain errors. Information only, not investment advice.
- Report on large shareholdings (5% rule) (standard)Oct 13
- [Amended] Supply contract signed (subsidiary)
SK updated a subsidiary's previously disclosed supply contract with Korea National Oil Corp., now worth US$2.13B, about 6.54% of the subsidiary's recent annual revenue, running through Sep 2026.
Supply contract · Oct 12 - Securities issuance reportOct 7
- ProspectusOct 7
- DisclosureOct 7
- [Terms finalized] Securities registration statement (debt)Oct 6
- Executives/major shareholders' securities trading planOct 2
- [Terms finalized] Securities registration statement (debt)Sep 30
- [Amended] Securities registration statement (debt)Sep 30
- DisclosureSep 29
- DisclosureSep 29
- Change in shares held by the largest shareholderSep 29
- DisclosureSep 29
- Supply contract signed (subsidiary)
SK disclosed a subsidiary's supply contract with Korea National Oil Corp., worth US$1.62B, about 5.62% of the subsidiary's recent annual revenue, running through Sep 2027.
Supply contract · Sep 28 - Securities registration statement (debt)Sep 22
- Change in shares held by the largest shareholderSep 4
- Material event report (treasury share disposal) (subsidiary)
SK disclosed that its subsidiary SK Telecom Co., Ltd. approved disposal of 1,061 treasury common shares, valued at US$76.6K based on the August 26, 2026 closing price of US$72.15, to five independent directors under a performance-linked compensation program, over the period August 28 - September 30, 2026.
Treasury Shares · Aug 27 - [Amended] Material event report (merger) (subsidiary)
SK Corp's subsidiary SK Innovation will absorb its own subsidiary SK IE Technology (merger ratio 1:0.1174540, issuing 4,481,300 new shares) to strengthen its separator business and financial stability; this amendment updates a reference to SK Innovation's securities registration statement, filed August 26, 2026, with the merger date set for January 1, 2027.
M&A · Aug 26 · 2 versions - Treasury share disposal: results report
SK Inc. disposed of 1,487 treasury common shares on August 26, 2026 at US$400.44 per share (US$595K total) to grant Stock Grants to independent directors and pay long-term incentive compensation to officers, leaving the Company holding 17,959,328 common and 1,787 preferred treasury shares (9.6% of common shares).
Treasury Shares · Aug 26 - Material event report (treasury share disposal)
SK disclosed a plan to sell treasury shares worth US$591K, about 0.0% of its market value.
Treasury Shares · Aug 25 - Cash/in-kind dividend decision
SK declared a cash dividend of US$1.05 per share, equal to about 0.3% of the recent share price.
Dividend · Aug 3 - Material event report (convertible bonds)
SK disclosed convertible bonds to raise US$6.09M, about 0.0% of its market value.
Capital raise · Aug 3 - [Amended] Decision to acquire shares/equity in another company (subsidiary)
SK updated the disclosed terms of a subsidiary's acquisition of SK hynix NAND Product Solutions Corp., now worth US$269M.
M&A · Jul 23 · 2 versions - Decision to acquire shares/equity in another company (subsidiary)
SK disclosed a subsidiary's acquisition of SK Hyper Co., Ltd., worth US$224M.
M&A · Jul 23 - Cash/in-kind dividend decision (subsidiary)
SK Co., Ltd.'s subsidiary SK Telecom Co., Ltd. decided a quarterly cash dividend of US$0.56 per common share (yield 0.9%), record date 2026-08-31, payment expected 2026-09-17, for a total of US$120M, board-approved 2026-07-23.
Dividend · Jul 23 - [Amended] Decision to acquire shares/equity in another company (subsidiary)
SK updated the disclosed terms of a subsidiary's acquisition of SK On Jiangsu Co., Ltd., now worth US$282M.
M&A · Jun 22 - [Amended] Decision to acquire shares/equity in another company (subsidiary)
SK updated the disclosed terms of a subsidiary's acquisition of SK On Jiangsu Co., Ltd., now worth US$291M.
M&A · May 28 - Treasury share disposal: results reportTreasury Shares · May 19
- Material event report (treasury share disposal)
SK disclosed a plan to sell treasury shares worth US$6.88M, about 0.0% of its market value.
Treasury Shares · May 12 - Material event report (treasury share disposal) (subsidiary)Treasury Shares · Apr 27
- Cash/in-kind dividend decision (subsidiary)Dividend · Apr 27
- Treasury share disposal: results reportTreasury Shares · Apr 3
- [Attachment amended] Material event report (share exchange) (subsidiary)M&A · Mar 27
- Material event report (share exchange) (subsidiary)M&A · Mar 26
- Material event report (treasury share disposal)
SK disclosed a plan to sell treasury shares worth US$439K, about 0.0% of its market value.
Treasury Shares · Mar 26 - [Amended] Decision to acquire shares/equity in another company (subsidiary)
SK updated the disclosed terms of a subsidiary's acquisition of SK On Jiangsu Co., Ltd., now worth US$303M.
M&A · Feb 27 - [Amended] Cash/in-kind dividend decision
SK updated its declared cash dividend of US$4.46 per share.
Dividend · Feb 10 · 2 versions - Change of 30% or more in revenue or profit/loss structure (15% for large companies)
SK reported consolidated results for FY2025: revenue of US$84.1B (−0.6% year on year), operating profit of US$1.25B (−24.1% year on year) and net income of US$2.44B (+572.5% year on year).
Earnings · Feb 10 - Change of 30% or more in revenue or profit/loss structure (15% for large companies) (subsidiary)
SK reported a subsidiary's consolidated results for FY2025: revenue of US$11.7B (−4.7% year on year), operating profit of US$735M (−41.1% year on year) and net income of US$257M (−73% year on year).
Earnings · Feb 5 - Material event report (treasury share disposal) (subsidiary)Treasury Shares · Feb 4