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Taihan Fiberoptics

010170 · KOSDAQ · ₩010170 · 대한광통신

₩13,380▼ ₩500 (3.60%)End-of-day · Oct 26, 2026 · End-of-day prices.
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Price · 1Y +642.51%
Market cap
₩2.1T
Enterprise value
₩2.2T
P/E
—
P/B
18.7×
Dividend yield
0.0%
ROE
−20.8%
Net margin
−14.8%

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−57.5% from the high

₩1,760Today: ₩13,130 – ₩13,780₩31,500

Returns

  • 1W+1.4%
  • 1M−24.4%
  • 3M+37.4%
  • 6M−16.5%
  • YTD+501.3%
  • 1Y+592.5%
Volume today
2,585,596
0.3× the 20-day average
Traded today
₩35B
Listed shares
155,485,660
EPS (12 months)
−₩148
Earnings yield −1.1%
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AI research · InitiationTaihan Fiberoptics: Share Price Up Sharply While Reported Losses ContinueThe evidence shows a large gap between market pricing and reported fundamentals.Read the full report →

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Signals

26Quiet
  • BuzzQuietBuzz 26 of 100 (50 is a normal day for this stock).
  • MomentumWeak-24.5% over the last month; the price is below its 20-day average.
  • News impactLow1 news items and filings in two weeks; 0 rated high impact, 0 medium.

Signals describe activity, not recommendations. Not financial advice.

Leveraged ETF flows

Estimated leveraged-ETF rebalance on Oct 26: sell ₩1.3B at the close (1.0% of 20-day average trading value)

Sep 23Last 20 trading days (% of average trading value)Oct 26

On its 37 biggest days of the last 60 (moves of 3%+), the estimated pressure averaged 1.3% of trading value and pointed the same way 30 of 37 times.

  • 2× KODEX KOSDAQ150 Leverage −₩1.1B
  • -1× KODEX KOSDAQ150 Futures Inverse −₩94M
  • 2× TIGER KOSDAQ150 Leverage −₩83M
  • 2× RISE KOSDAQ150 Futures Leverage −₩24M
  • -1× TIGER KOSDAQ150 Futures Inverse −₩2.6M

Mostly via futures: index funds hedge with KOSPI 200 / KOSDAQ 150 futures, spread here over the index's largest members by market value.

Final after the close. An intraday "if the close were now" estimate needs real-time prices, which we don't have yet.

Estimate based on ETF size and daily moves; actual trades may differ.

ETFs holding this

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Held by 11 funds.

Estimated from the funds' index or underlying stock.

Taihan Fiberoptics stock overview

Taihan Fiberoptics (대한광통신, KRX: 010170) is listed on KOSDAQ, in the Electrical equipment sector. , founded in 1974, manufactures communication and power cables and is described as the only domestic company in Korea with an integrated optical fiber and optical cable production system. Its shares closed at ₩13,380 on Oct 26, 2026, down 3.60% on the day, giving it a market value of ₩2.1T.

Key facts

Market cap
₩2.1T
Sector
Electrical equipment
Latest price change
−3.60%
As of
Oct 26, 2026
Main business
, founded in 1974, manufactures communication and power cables and is described as the only domestic company in Korea with an integrated optical fiber and optical cable production system.

Quick answers about Taihan Fiberoptics

What does Taihan Fiberoptics do?
, founded in 1974, manufactures communication and power cables and is described as the only domestic company in Korea with an integrated optical fiber and optical cable production system. It also expands into materials, parts and equipment and specialty optical businesses, selling mainly to telecom operators, power utilities, and overseas buyers, with operations in Korea and abroad including subsidiaries in the United States and France.
What is the market cap of Taihan Fiberoptics?
The market capitalisation of Taihan Fiberoptics was ₩2.1T at the close on Oct 26, 2026.
Who are the largest shareholders of Taihan Fiberoptics?
According to the latest official filings, the largest reported holders are TF Industries (14.60%, as of Jul 14, 2026); Seol Yun-seok (5.88%, as of Jul 14, 2026); National Pension Service (3.96%, as of Apr 1, 2026).
When is the next earnings report from Taihan Fiberoptics?
Korean companies rarely announce results dates in advance. Based on when Taihan Fiberoptics filed the same report in past years, its next 3q results is expected between Nov 12, 2026 and Nov 14, 2026.
Does the National Pension Service own Taihan Fiberoptics?
Yes. The National Pension Service held 3.96% of Taihan Fiberoptics shares as of Apr 1, 2026.

Company profile

Daehan Optical Communication Co., Ltd., founded in 1974, manufactures communication and power cables and is described as the only domestic company in Korea with an integrated optical fiber and optical cable production system. It also expands into materials, parts and equipment and specialty optical businesses, selling mainly to telecom operators, power utilities, and overseas buyers, with operations in Korea and abroad including subsidiaries in the United States and France.

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

Korean name
대한광통신
Sector
Electrical equipment
Themes
Telecom & 5GSolar & windPower grid & cables
CEO
설윤석, 박민수(각자대표)
Founded
Sep 1974
Listed
Nov 1994
Listed shares
155,485,660
Fiscal year ends
Month 12
Website
www.taihanfiber.com

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Titles in Korean until English translations are added.

Also known as: Taihan Fiberoptics / 대한광통신 / 010170 / KRX:010170

Source: KRX statistical information