WiSoL
Daily close in US$ at the latest USD/KRW close. Source: KRX via FinanceDataReader.
WiSoL makes tiny radio-frequency filters and related modules, components that clean up wireless signals inside smartphones so calls and data transmissions work clearly.
It supplies these parts to the mobile-handset industry and is listed on KOSDAQ, South Korea's tech-focused stock exchange. Its core business centres on SAW (Surface Acoustic Wave) filter technology, and it produces components for second-, third-, fourth-, and fifth-generation mobile networks. It has also obtained an international automotive-quality certification to expand into vehicle electronics.
Summary is AI-generated and may contain errors · figures from DART filings
WiSoL in five facts
What does WiSoL do?
WiSoL makes tiny radio-frequency filters and related modules, components that clean up wireless signals inside smartphones so calls and data transmissions work clearly.
Where is WiSoL listed and in which sector?
WiSoL (Korean name: 와이솔) trades under KRX code 122990 on KOSDAQ, the Korea Exchange's board for smaller and growth companies. It is classified in the Information Technology sector, Components.
How large is WiSoL?
Its market capitalisation was US$123.3M on 2026-10-21, which puts it in this site's small-cap group. US$ amounts are converted from won at 1 USD ≈ ₩1,325 (2026-10-21).
What were WiSoL's latest annual revenue and operating profit?
For fiscal year 2025, WiSoL reported revenue of US$242.5M, an operating loss of US$27.4M and a net loss of US$31.8M, per its annual report on DART (data retrieved from DART on 2026-06-04). Revenue was down 14.3% on the previous year.
Where does this data come from?
Financial statements and filings come from DART, Korea's official corporate-filing system. Share prices, market capitalisation and trading status come from KRX. Company summaries are AI-generated from the filings and may contain errors; financial figures are mapped directly from DART.
Data sources and last updated
- Filings and financial statements
- DART (dart.fss.or.kr), Korea's official corporate-filing system
- Prices, market cap, trading status
- KRX (Korea Exchange), via FinanceDataReader
- Latest annual financials
- Fiscal year 2025, data retrieved from DART on 2026-06-04
- Share price and market cap
- Close of 2026-10-21
- Currency
- US$, 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.
- Executives/major shareholders' securities trading planOct 12
- Report on securities held by executives/major shareholdersOct 2
- Report on large shareholdings (5% rule) (standard)Oct 2
- Report on securities held by executives/major shareholdersSep 18
- Report on large shareholdings (5% rule) (standard)Sep 18
- Decision to acquire shares/equity in another company
WiSoL disclosed an acquisition of NR Lab Co., Ltd., worth US$12.3M.
M&A · Jun 23 - [Amended] Change of 30% or more in revenue or profit/loss structure (15% for large companies)
WiSoL updated its previously filed consolidated results for FY2025: revenue of US$217M (−14.3% year on year), an operating loss of US$24.5M (from a profit a year earlier) and a net loss of US$28.5M (from a profit a year earlier).
Earnings · Mar 6 · 2 versions - Cash/in-kind dividend decision
WiSoL declared a cash dividend of US$0.35 per share.
Dividend · Feb 24