Sunny Electronics
Daily close in US$ at the latest USD/KRW close. Source: KRX via FinanceDataReader.
Sunny Electronics makes quartz crystal oscillators, tiny components that generate or filter precise frequencies and are found in virtually every electronic device that uses a radio signal or clock timing.
The company supplies these components to major Korean consumer-electronics manufacturers, reaching their production facilities both inside Korea and abroad. Listed on KOSPI, Korea's main stock exchange, it operates as a single-segment business focused entirely on quartz crystal products, sourcing most of its key raw materials through imports, predominantly from Japan.
Summary is AI-generated and may contain errors · figures from DART filings
The company's own filing states that its dependence on Japanese suppliers for key raw materials runs between seventy and ninety percent of its procurement.
Sunny Electronics in five facts
What does Sunny Electronics do?
Sunny Electronics makes quartz crystal oscillators, tiny components that generate or filter precise frequencies and are found in virtually every electronic device that uses a radio signal or clock timing.
Where is Sunny Electronics listed and in which sector?
Sunny Electronics (Korean name: 써니전자) trades under KRX code 004770 on KOSPI, the main board of the Korea Exchange. It is classified in the Information Technology sector, Components.
How large is Sunny Electronics?
Its market capitalisation was US$43.7M on 2026-10-21, which puts it in this site's small-cap group. US$ amounts are converted from won at 1 USD ≈ ₩1,325 (2026-10-21).
What were Sunny Electronics's latest annual revenue and operating profit?
For fiscal year 2025, Sunny Electronics reported revenue of US$9.3M, operating profit of US$1.7M and net income of US$2.7M, per its annual report on DART (data retrieved from DART on 2026-06-04). Revenue was down 3.5% on the previous year.
Where does this data come from?
Financial statements and filings come from DART, Korea's official corporate-filing system. Share prices, market capitalisation and trading status come from KRX. Company summaries are AI-generated from the filings and may contain errors; financial figures are mapped directly from DART.
Data sources and last updated
- Filings and financial statements
- DART (dart.fss.or.kr), Korea's official corporate-filing system
- Prices, market cap, trading status
- KRX (Korea Exchange), via FinanceDataReader
- Latest annual financials
- Fiscal year 2025, data retrieved from DART on 2026-06-04
- Share price and market cap
- Close of 2026-10-21
- Currency
- US$, 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.
- Change in shares held by the largest shareholderOct 8
- Resolution to convene a general shareholders' meetingOct 1
- Shareholder register closure / record date setOct 1
- Report on large shareholdings (5% rule) (standard)Oct 1
- Report on large shareholdings (5% rule) (standard)Oct 1
- Executives/major shareholders' securities trading planOct 1
- Change in shares held by the largest shareholderSep 11
- Report on large shareholdings (5% rule) (standard)Sep 9
- Change in shares held by the largest shareholderSep 2
- Change of largest shareholder
Sunny Electronics' largest shareholder changed on 2026-08-31 as KX Asset Co., Ltd. and 5 others acquired 4,795,279 shares (13.50%) through on-market purchases for management participation, overtaking the previous largest shareholder group led by Cha Sang-gwon (3,048,920 shares, 8.58%).
Ownership change · Sep 1 - Report on large shareholdings (5% rule) (standard)Sep 1
- Cash/in-kind dividend decision
Sunny Electronics declared a cash dividend of US$0.02 per share.
Dividend · Feb 3