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Lightron FIBER-OPTIC Devices
069540 ยท KOSDAQ ยท Manufacture of Communication & Broadcasting Equipment
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Source: Financial Services Commission stock price data (data.go.kr), updated once a day.
Daily price, 1 year
Key statistics
Market cap (KRW bn)โ
PERโ
PBRโ
ROE %-13.8
Debt ratio % (liabilities / equity)24
Revenue TTM (KRW bn)26.7
Op. profit TTM (KRW bn)-14.4
Dividend yield %โ
Basis: market cap at โฆ; equity = total equity (consolidated if available) at 2026.06.30; net income = trailing 12 months to 2026.06.30 (consolidated). PER is not shown when TTM net income is negative.
Upcoming risk events
Next 90 days for this company, plus macro events tagged with this ticker or its sector. Not a recommendation.
| 2026-10-30 | Convertible bonds (CB): bonds issued (payment date) โ 0.54% of shares ยท price โฉ4,946 ยท refix floor โฉ3,463 (70.0%) ยท size โฉ3.0bn | Low |
| 2026-12-29 | Convertible bonds (CB): conversion / exercise period starts โ 9.26% of shares ยท price โฉ708 ยท refix floor โฉ500 (70.6%) ยท size โฉ4.0bn | Medium |
| 2027-01-15 | Convertible bonds (CB): conversion / exercise period starts โ 2.27% of shares ยท price โฉ760 ยท refix floor โฉ532 (70.0%) ยท size โฉ1.1bn | Low |
Other scheduled dates (routine, not risks) (2)
- 2026-11-02 ยท Routine schedule: extraordinary shareholder meeting
- 2026-11-02 ยท Routine schedule: record date
Annual results (KRW bn)
| 2021 | 2022 | 2023 | 2024 | 2025 | |
|---|---|---|---|---|---|
| Revenue | 44.1 | 52.6 | 21.7 | 18.1 | 31.8 |
| Operating profit | -4.5 | 1.2 | -9.4 | -10.3 | -16.5 |
| Net income | -8.5 | -0.7 | -19.6 | -18.6 | -19.7 |
Quarterly results (KRW bn, 3 months)
| 2025Q1 | 2025Q2 | 2025Q3 | 2025Q4 | 2026Q1 | 2026Q2 | |
|---|---|---|---|---|---|---|
| Revenue | 8.5 | 8.0 | 7.6 | 7.7 | 8.5 | 4.3 |
| Operating profit | -2.3 | -3.7 | -2.3 | -8.3 | -2.3 | -2.1 |
| Net income | -2.0 | -6.2 | -1.9 | -9.6 | -2.0 | 1.0 |
Largest shareholder
As of the 2025 annual report: ์ผ์ดํค๋์กฐํฉ and related parties hold 19.62% of common shares.
Recent disclosures
| Date | Filing | Summary | |
|---|---|---|---|
| 2026-10-28 | Convertible bond issuance [๊ธฐ์ฌ์ ์ ]์ฃผ์์ฌํญ๋ณด๊ณ ์(์ ํ์ฌ์ฑ๊ถ๋ฐํ๊ฒฐ์ ) | DART original | |
| 2026-10-27 | Insider / major-holder ownership report ์์ใ์ฃผ์์ฃผ์ฃผํน์ ์ฆ๊ถ๋ฑ์์ ์ํฉ๋ณด๊ณ ์ | DART original | |
| 2026-10-27 | Insider / major-holder ownership report ์ฃผ์๋ฑ์๋๋๋ณด์ ์ํฉ๋ณด๊ณ ์(์ผ๋ฐ) | DART original | |
| 2026-10-16 | Shareholder meeting [๊ธฐ์ฌ์ ์ ]์ฃผ์ฃผ์ดํ์์ง๊ฒฐ์ (์์์ฃผ์ฃผ์ดํ) | DART original | |
| 2026-10-16 | Shareholder meeting [๊ธฐ์ฌ์ ์ ]์ฃผ์ฃผ๋ช ๋ถํ์๊ธฐ๊ฐ๋๋๊ธฐ์ค์ผ์ค์ | DART original | |
| 2026-10-15 | Insider / major-holder ownership report ์์ใ์ฃผ์์ฃผ์ฃผํน์ ์ฆ๊ถ๋ฑ์์ ์ํฉ๋ณด๊ณ ์ | DART original | |
| 2026-10-15 | Insider / major-holder ownership report ์ฃผ์๋ฑ์๋๋๋ณด์ ์ํฉ๋ณด๊ณ ์(์ผ๋ฐ) | DART original | |
| 2026-10-08 | Insider / major-holder ownership report ์ฃผ์๋ฑ์๋๋๋ณด์ ์ํฉ๋ณด๊ณ ์(์ผ๋ฐ) | DART original | |
| 2026-10-07 | Convertible bond issuance ์ฃผ์์ฌํญ๋ณด๊ณ ์(์ ํ์ฌ์ฑ๊ถ๋ฐํ๊ฒฐ์ ) | DART original | |
| 2026-09-17 | Insider / major-holder ownership report ์ฃผ์๋ฑ์๋๋๋ณด์ ์ํฉ๋ณด๊ณ ์(์ผ๋ฐ) | DART original | |
| 2026-09-04 | Insider / major-holder ownership report ์์ใ์ฃผ์์ฃผ์ฃผํน์ ์ฆ๊ถ๋ฑ์์ ์ํฉ๋ณด๊ณ ์ | DART original | |
| 2026-09-04 | Insider / major-holder ownership report ์ฃผ์๋ฑ์๋๋๋ณด์ ์ํฉ๋ณด๊ณ ์(์ผ๋ฐ) | DART original |
Past material filings and price reaction (market-adjusted)
| Date | Filing type | On the news (vs. market) | Next day (vs. market) | 20 days (vs. market) |
|---|---|---|---|---|
| 2026-10-07 | Convertible bond issuance | +0.2% | -6.0% | โ |
| 2026-07-22 | Convertible bond issuance | +3.0% | -11.3% | -10.3% |
| 2026-06-19 | Other material event (investment-relevant) | -3.5% | -2.2% | +10.8% |
| 2026-05-20 | Merger | +1.1% | -6.6% | -34.2% |
| 2026-05-15 | Convertible bond issuance | -4.1% | +1.2% | -17.5% |
| 2026-03-23 | Convertible bond issuance | +4.9% | -13.8% | +108.1% |
| 2026-02-27 | Stock split / reverse split | -0.3% | -3.7% | +191.6% |
| 2026-02-02 | Revenue/profit change >=30% (15% large caps) | -0.4% | -6.1% | -38.3% |
| 2026-01-29 | Change of largest shareholder | +0.6% | -9.0% | -31.2% |
| 2026-01-07 | Convertible bond issuance | +8.0% | +20.6% | +35.6% |
For information only, not investment advice. Data may be delayed or inaccurate. Full disclaimer โ Data: OpenDART (FSS), stock prices: official previous-day close from the Financial Services Commission (data.go.kr) and FinanceData/marcap history, index data via FinanceDataReader, FX: ECB reference rates, crypto data from Upbit, Bithumb and Binance public APIs.
Market data not licensed for redistribution.
ยฉ Crypvu ยท Crypto market view
Market data not licensed for redistribution.
ยฉ Crypvu ยท Crypto market view