Seoul Semiconductor
Daily close in US$ at the latest USD/KRW close. Source: KRX via FinanceDataReader.
Seoul Semiconductor makes LED components, the small light-emitting devices used in general lighting, automotive headlamps, and display backlighting, and packages them for supply to customers across those markets.
Listed on KOSDAQ, Korea's tech-focused stock exchange, it sits in the middle of the LED supply chain, taking chips and turning them into finished packaged components. Its core structural fact is that it sources LED chips from an affiliate, Seoul Viosys, and its primary business is the packaging and supply of those chips.
Summary is AI-generated and may contain errors · figures from DART filings
The company explicitly states it procures LED chips from its affiliate Seoul Viosys, making its supply chain directly tied to that related-party relationship.
Seoul Semiconductor in five facts
What does Seoul Semiconductor do?
Seoul Semiconductor makes LED components, the small light-emitting devices used in general lighting, automotive headlamps, and display backlighting, and packages them for supply to customers across those markets.
Where is Seoul Semiconductor listed and in which sector?
Seoul Semiconductor (Korean name: 서울반도체) trades under KRX code 046890 on KOSDAQ, the Korea Exchange's board for smaller and growth companies. It is classified in the Information Technology sector, Semiconductors.
How large is Seoul Semiconductor?
Its market capitalisation was US$371M on 2026-10-21, which puts it in this site's small-cap group. US$ amounts are converted from won at 1 USD ≈ ₩1,325 (2026-10-21).
What were Seoul Semiconductor's latest annual revenue and operating profit?
For fiscal year 2025, Seoul Semiconductor reported revenue of US$765M, an operating loss of US$23.8M and a net loss of US$45.3M, per its annual report on DART (data retrieved from DART on 2026-06-04). Revenue was down 7.1% on the previous year.
Where does this data come from?
Financial statements and filings come from DART, Korea's official corporate-filing system. Share prices, market capitalisation and trading status come from KRX. Company summaries are AI-generated from the filings and may contain errors; financial figures are mapped directly from DART.
Data sources and last updated
- Filings and financial statements
- DART (dart.fss.or.kr), Korea's official corporate-filing system
- Prices, market cap, trading status
- KRX (Korea Exchange), via FinanceDataReader
- Latest annual financials
- Fiscal year 2025, data retrieved from DART on 2026-06-04
- Share price and market cap
- Close of 2026-10-21
- Currency
- US$, 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.
- Operating results (consolidated) (preliminary) (fair disclosure)
Seoul Semiconductor filed provisional (unaudited) consolidated results for Q3 2026: revenue of US$225M (+17.6% year on year).
Earnings · Oct 14 - Decision to guarantee a third party's debtSep 11
- [Amended] Operating results (consolidated) (preliminary) (fair disclosure)
Seoul Semiconductor updated its previously filed provisional (unaudited) consolidated results for Q2 2026: revenue of US$207M (+16.1% year on year), operating profit of US$2.47M (from a loss a year earlier) and net income of US$4.39M (from a loss a year earlier).
Earnings · Aug 11 · 2 versions - [Amended] Operating results (consolidated) (preliminary) (fair disclosure)
Seoul Semiconductor updated its previously filed provisional (unaudited) consolidated results for Q1 2026: revenue of US$160M (−0.4% year on year), operating profit of US$1.19M (from a loss a year earlier) and net income of US$5.86M (from a loss a year earlier).
Earnings · May 12 · 2 versions - Change of 30% or more in revenue or profit/loss structure (15% for large companies)
Seoul Semiconductor reported consolidated results for FY2025: revenue of US$701M (−7.1% year on year), an operating loss of US$19.1M (from a profit a year earlier) and a net loss of US$32.1M.
Earnings · Feb 12 - [Amended] Operating results (consolidated) (preliminary) (fair disclosure)
Seoul Semiconductor updated its previously filed provisional (unaudited) consolidated results for Q4 2025: revenue of US$184M (−0.1% year on year), operating profit of US$3.26M (from a loss a year earlier) and net income of US$4.06M (+92.1% year on year).
Earnings · Feb 12 · 2 versions