What is the market cap of Sungwooelectronicsco?

The market capitalisation of Sungwooelectronicsco was ₩35B at the close on Oct 28, 2026.

Who are the largest shareholders of Sungwooelectronicsco?

According to the latest official filings, the largest reported holders are Jo Seong-myeon (46.29%, as of Oct 27, 2026); Jo Il-hyeon (11.55%, as of Oct 27, 2026); Renaissance Asset Management (10.57%, as of Jul 1, 2026).

When is the next earnings report from Sungwooelectronicsco?

Korean companies rarely announce results dates in advance. Based on when Sungwooelectronicsco filed the same report in past years, its next 3q results is expected around Nov 14, 2026.

KOSDAQ · 081580 · Electronics · ₩081580

Sungwooelectronicsco성우전자

081580 · KOSDAQ · ₩081580 · 성우전자

₩2,255▲ ₩35 (1.58%)End-of-day · Oct 28, 2026 · End-of-day prices.

Trade

Price · 1Y −4.04%

Market cap: ₩35B
Enterprise value: ₩2.1B
P/E: 3.7×
P/B: 0.3×
Dividend yield: 0.0%
ROE: 8.1%
Net margin: 5.0%

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−39.0% from the high

₩2,095Today: ₩2,220 – ₩2,285₩3,695

Returns

1W−2.2%
1M−4.4%
3M+4.2%
6M−31.1%
YTD+2.5%
1Y−4.0%

Volume today: 23,554; 0.5× the 20-day average
Traded today: ₩53M
Listed shares: 15,508,143
EPS (12 months): ₩607; Earnings yield 26.9%

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AI researchResearch being writtenOur AI is writing a report on this company from filed data, prices and news. Check back soon.

Upcoming dates

Nov 16Earnings Expected · 3Q results

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Signals

Quiet

BuzzQuietBuzz 34 of 100 (50 is a normal day for this stock).
SentimentMixedNews: Routine ownership filings with no clear positive or negative news. Community: 0 bullish, 0 bearish posts this week.
MomentumWeak-5.1% over the last month; the price is below its 20-day average.
News impactLow3 news items and filings in two weeks; 0 rated high impact, 0 medium.

Signals describe activity, not recommendations. Not financial advice.

Sungwooelectronicsco stock overview

Sungwooelectronicsco (성우전자, KRX: 081580) is listed on KOSDAQ, in the Electronics sector. Seongwoo Electronics designs and manufactures components for mobile devices, including shield cans, decorative parts and assemblies for smartphones and notebook PCs, with production facilities in Korea and Vietnam. Its shares closed at ₩2,255 on Oct 28, 2026, up 1.58% on the day, giving it a market value of ₩35B.

Market cap: ₩35B
Sector: Electronics
Latest price change: +1.58%
As of: Oct 28, 2026
Main business: Seongwoo Electronics designs and manufactures components for mobile devices, including shield cans, decorative parts and assemblies for smartphones and notebook PCs, with production facilities in Korea and Vietnam.

Quick answers about Sungwooelectronicsco

What does Sungwooelectronicsco do?: Seongwoo Electronics designs and manufactures components for mobile devices, including shield cans, decorative parts and assemblies for smartphones and notebook PCs, with production facilities in Korea and Vietnam. The company also makes optical image stabilization (OIS) and AF actuator parts for camera modules, plastic battery cases for automotive batteries sold to a major battery maker, and smart card operating system software. Its other businesses include filler and beauty device products and real estate rental income.
What is the market cap of Sungwooelectronicsco?: The market capitalisation of Sungwooelectronicsco was ₩35B at the close on Oct 28, 2026.
Who are the largest shareholders of Sungwooelectronicsco?: According to the latest official filings, the largest reported holders are Jo Seong-myeon (46.29%, as of Oct 27, 2026); Jo Il-hyeon (11.55%, as of Oct 27, 2026); Renaissance Asset Management (10.57%, as of Jul 1, 2026).
When is the next earnings report from Sungwooelectronicsco?: Korean companies rarely announce results dates in advance. Based on when Sungwooelectronicsco filed the same report in past years, its next 3q results is expected around Nov 14, 2026.

Company profile

Seongwoo Electronics designs and manufactures components for mobile devices, including shield cans, decorative parts and assemblies for smartphones and notebook PCs, with production facilities in Korea and Vietnam. The company also makes optical image stabilization (OIS) and AF actuator parts for camera modules, plastic battery cases for automotive batteries sold to a major battery maker, and smart card operating system software. Its other businesses include filler and beauty device products and real estate rental income.

Written by AI from the company's latest annual report.

Korean name: 성우전자
Sector: Electronics
Themes: Smartphone parts
CEO: 조일현,김영도(각자대표이사)
Founded: Aug 1987
Listed: Oct 2007
Listed shares: 15,508,143
Fiscal year ends: Month 12
Website: www.swei.co.kr

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Recent filings

See all

Insider shareholding reportOct 27, 2026
5%+ holding reportOct 27, 2026
Adjustment of Conversion PriceOct 21, 2026
Half-year report (Jun 2026)Aug 14, 2026
5%+ holding reportJul 1, 2026

Titles in Korean until English translations are added.

Key numbers

Volume: 23,554
Traded value: ₩53M
Day range: ₩2,220 – ₩2,285
Revenue (TTM): ₩187B
Operating margin: 1.5%
Net margin: 5.0%
ROE: 8.1%
Revenue growth (last year): +24.4%
Liabilities to equity: 39%
Foreign ownership: 2.87%
Short balance: 0.35%

Trailing 12 months from filed financial statements, as of H1 2026.

Who owns Sungwooelectronicsco?

Jo Seong-myeon조성면5% report46.29%7.2M sharesas of Oct 27, 2026
Jo Il-hyeon조일현CEO · 사실상지배주주Insider report11.55%1.9M sharesas of Oct 27, 2026
Renaissance Asset Management르네상스자산운용5% report10.57%1.8M sharesas of Jul 1, 2026
Korea Securities Finance한국증권금융5% report4.04%626.4K sharesas of Jan 9, 2025
Lee Chung-hyun이충현이사Insider report0.02%3K sharesas of Feb 25, 2026
Jang Chang-won장창원Executive vice presidentInsider report0.02%3.6K sharesas of Feb 25, 2026

From official filings only: 5% reports and executives' and major shareholders' reports (Korea), and US funds' Form N-PORT and US managers' Form 13F (ADRs) reports. Each holder shows its latest report and the date it was as of; the same holder in two reports is shown once.

Institutions holding 5% or more

All institutions →

RENAISSANCE ASSET MANAGEMENT Co., Ltd.Est. avg cost ₩2,35510.57%−4.2%

Only holdings of 5% or more are disclosed. We add up every reported trade (shares × the price in the filing, or that day's close when the filing gives none) to estimate an average cost, then value the stake at the latest close. Shares held before the first reported trade count at that day's close. It is an estimate, not the institution's real return.

Also known as: Sungwooelectronicsco / 성우전자 / 081580 / KRX:081580

Source: KRX statistical information