효성 Stock: price and insider trades · South Korea
No insider purchase over the last 90 days. The latest, by AllianceBernsteinL.P., was filed 20 Feb 2026.
Who traded when
BuySaleSince the insiders bought
- -24.0%Entry ₩172,300 · Close 04 Nov 2026 ₩130,900
- +89.7%Entry ₩45,850 · Close at T+365 ₩87,000
- -12.1%Entry ₩84,113 · Close at T+365 ₩73,966
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.
Transparent value + quality ranking, distinct from the insider signal.
Financial data
as of FY 2025FY ended December 2025 · cache
- Other0DART
- Other0DART
- Other0DART
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- 11,385 sharesKRXDART:20260320000972
- 9,334 shares@ ₩174,227.47140.055% mcap100.0% of flowShareKRXDART:20260306000745
- ●Executives0DART
- 14,600 sharesKRXDART:20260220001136Canonical exit: 14 May 2026 (T+90)
- 2,051 sharesShareKRXDART:20260127000358
- 70,909 sharesKRXDART:20251001000340
- 76,445 sharesKRXDART:20250704000400
- ●Executives0DART
- 0KRXDART:20241010000461
- 0KRXDART:20240925000509
- 0KRXDART:20240910000561
- 0KRXDART:20240830001898
- ShareKRXDART:20240821000532
- 0KRXDART:20240821000513
- ShareKRXDART:20240821000524Canonical exit: 14 Nov 2024 (T+90)
- 2,151,728 sharesKRXDART:20240710000593
- 206,971 sharesKRXDART:20240705000417Canonical exit: 1 Oct 2024 (T+90)
25 of 72 declarations
About 효성
효성 is a Korean company in the Industrials sector with a market capitalisation of KRW 2,009.5 billion. Its 64 filings were published between February 26, 2021 and March 20, 2026. Three lines carry the largest amounts: a purchase of EUR 852,209 by 조석래 on January 3, 2023, a second one of EUR 48,604 on January 11, 2023, and a sale of EUR 961,107 by 조현상, filed as 10%이상주주, on February 27, 2026.
Overall, 11 purchases and 11 sales face each other, which makes 50% purchases among open-market trades, though only 2 purchases and 1 sale carry an amount. 42 filings are of another kind. 조석래 is the busiest filer with 32 filings, ahead of 조현준 (18 filings, of which 8 purchases and 4 sales) and 효성 itself (5). Insiders hold 57.2% of the capital.
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Annual volume peaks at 17 filings, in 2022 and again in 2024, and drops to 3 in 2025. The last twelve months hold 5 filings: 1 purchase and 3 sales. Filings appear a median of 7 days after the trade.
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