Sungwoo성우
458650 · KOSDAQ · ₩458650 · 성우
- Market cap
- ₩103B
- Enterprise value
- ₩76B
- P/E
- 12.5×
- P/B
- 0.5×
- Dividend yield
- 2.9%
- ROE
- 3.7%
- Net margin
- 9.3%
Trailing 12 months from filed financial statements, as of H1 2026. Dividend yield: the 2025 dividend per share from the annual report ÷ today's price.
52-week range−55.5% from the high
₩6,420Today: ₩6,790 – ₩7,300₩15,440
Returns
- 1W−11.5%
- 1M−9.2%
- 3M−1.2%
- 6M−50.2%
- YTD−28.5%
- 1Y−45.0%
- Volume today
- 41,559
- 2.3× the 20-day average
- Traded today
- ₩287M
- Listed shares
- 15,045,670
- EPS (12 months)
- ₩552
- Earnings yield 8.0%
Upcoming dates
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Why is it moving?
−5.9% on Oct 29, 2026. Trading value 2.0× its normal.
- • Foreign investors sold a net ₩35M that day
- • Buzz 56 on JONBUR: heavy trading
We found no news, filing or broker report explaining it yet. Moves without news happen; it may come later.
Possible reasons, not certainties. Not financial advice.
Signals
Normal- BuzzNormalBuzz 56: heavy trading.
- MomentumWeak-9.6% over the last month; the price is below its 20-day average.
Signals describe activity, not recommendations. Not financial advice.
Sungwoo stock overview
Sungwoo (성우, KRX: 458650) is listed on KOSDAQ, in the Batteries sector. The company was founded in 1992 and originally made electron gun parts for CRT TVs, but shifted to secondary battery components after demand for those parts declined. Its shares closed at ₩6,870 on Oct 29, 2026, down 5.89% on the day, giving it a market value of ₩103B.
Key facts
- Market cap
- ₩103B
- Sector
- Batteries
- Latest price change
- −5.89%
- As of
- Oct 29, 2026
- Main business
- The company was founded in 1992 and originally made electron gun parts for CRT TVs, but shifted to secondary battery components after demand for those parts declined.
Quick answers about Sungwoo
- What does Sungwoo do?
- The company was founded in 1992 and originally made electron gun parts for CRT TVs, but shifted to secondary battery components after demand for those parts declined. Its main business is manufacturing and selling Topcap assemblies, safety parts for cylindrical rechargeable batteries that vent gas and cut current to prevent explosions and fires. It supplies these parts to secondary battery manufacturers, and its products are used in electric vehicles, wireless electronics, and power tools.
- What is the market cap of Sungwoo?
- The market capitalisation of Sungwoo was ₩103B at the close on Oct 29, 2026.
- Who are the largest shareholders of Sungwoo?
- According to the latest official filings, the largest reported holders are Park Jong-heon (74.25%, as of Apr 16, 2026); Park Chae-won (26.79%, as of Nov 5, 2024); Park Jong-rae (12.36%, as of Nov 5, 2024).
- When is the next earnings report from Sungwoo?
- Korean companies rarely announce results dates in advance. Based on when Sungwoo filed the same report in past years, its next 3q results is expected around Nov 13, 2026.
Company profile
The company was founded in 1992 and originally made electron gun parts for CRT TVs, but shifted to secondary battery components after demand for those parts declined. Its main business is manufacturing and selling Topcap assemblies, safety parts for cylindrical rechargeable batteries that vent gas and cut current to prevent explosions and fires. It supplies these parts to secondary battery manufacturers, and its products are used in electric vehicles, wireless electronics, and power tools. The company also makes automotive electronic parts such as motor housings and EV relay components, and it operates production facilities in Korea and China.
Written by AI from the company's latest annual report.
- Korean name
- 성우
- Sector
- Batteries
- Themes
- EV batteries
- CEO
- 박종헌, 박채원(각자 대표)
- Founded
- Sep 1992
- Listed
- Oct 2024
- Listed shares
- 15,045,670
- Fiscal year ends
- Month 12
- Website
- www.e-sungwoo.co.kr
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Recent filings
See all- Results of Extraordinary Shareholders' MeetingOct 13, 2026
- Reference Document for Proxy Solicitation of Voting RightsSep 23, 2026
- Notice of shareholders' meetingSep 23, 2026
- Determination of Shareholder Register Closure Period or Record DateSep 1, 2026
- Shareholders' meeting calledSep 1, 2026
Titles in Korean until English translations are added.
Also known as: Sungwoo / 성우 / 458650 / KRX:458650
Source: KRX statistical information