Taihan Fiberoptics
Daily close in US$ at the latest USD/KRW close. Source: KRX via FinanceDataReader.
Taihan Fiberoptics makes optical fiber and optical cable, the glass strands and bundled lines that carry data and power signals across telecommunications and electricity networks.
Its products are used by telecom operators and power utilities, and it supplies customers both in South Korea and internationally. Listed on KOSDAQ, South Korea's tech and small-cap exchange, the company describes itself as the only domestic producer with a fully integrated, end-to-end optical fiber and cable manufacturing system. It is also expanding into specialty optical products and advanced materials and components.
Summary is AI-generated and may contain errors · figures from DART filings
The company operates subsidiaries in the United States and France, named Taihan Fiber Optics America Inc and Taihan Fiberoptics France, giving it a direct international sales and distribution presence.
Taihan Fiberoptics in five facts
What does Taihan Fiberoptics do?
Taihan Fiberoptics makes optical fiber and optical cable, the glass strands and bundled lines that carry data and power signals across telecommunications and electricity networks.
Where is Taihan Fiberoptics listed and in which sector?
Taihan Fiberoptics (Korean name: 대한광통신) trades under KRX code 010170 on KOSDAQ, the Korea Exchange's board for smaller and growth companies. It is classified in the Industrials sector, Electrical Equipment.
How large is Taihan Fiberoptics?
Its market capitalisation was US$1.7B on 2026-10-21, which puts it in this site's large-cap group. US$ amounts are converted from won at 1 USD ≈ ₩1,325 (2026-10-21).
What were Taihan Fiberoptics's latest annual revenue and operating profit?
For fiscal year 2025, Taihan Fiberoptics reported revenue of US$105.2M, an operating loss of US$16.2M and a net loss of US$21.1M, per its annual report on DART (data retrieved from DART on 2026-09-08). Revenue was down 8.7% on the previous year.
Where does this data come from?
Financial statements and filings come from DART, Korea's official corporate-filing system. Share prices, market capitalisation and trading status come from KRX. Company summaries are AI-generated from the filings and may contain errors; financial figures are mapped directly from DART.
Data sources and last updated
- Filings and financial statements
- DART (dart.fss.or.kr), Korea's official corporate-filing system
- Prices, market cap, trading status
- KRX (Korea Exchange), via FinanceDataReader
- Latest annual financials
- Fiscal year 2025, data retrieved from DART on 2026-09-08
- Share price and market cap
- Close of 2026-10-21
- Currency
- US$, 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.
- [Amended] Change of 30% or more in revenue or profit/loss structure (15% for large companies)
Taihan Fiberoptics updated its previously filed consolidated results for FY2025: revenue of US$94.5M (−8.7% year on year), an operating loss of US$14.5M and a net loss of US$18.7M.
Earnings · Mar 12 · 2 versions - Subscription results of rights offering or equity-linked bonds (voluntary)Capital raise · Feb 27
- Rights offering: final issue price setCapital raise · Feb 23
- [Amended] Material event report (rights offering)
Taihan Fiberoptics updated the terms of a new share issuance to raise US$38.1M, about 2.4% of its market value.
Capital raise · Feb 23 - Ex-rights (rights offering)Capital raise · Jan 7
- Rights offering: round 1 issue price setCapital raise · Jan 7
- [Amended] Material event report (rights offering)Capital raise · Jan 7