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JS&D 317400

Company
자이에스앤디JS&D
Insiders
2
Buys
4
Total Value
₩132M ($92K)
Avg Return
+47.18%
Last Filing
2025-04-01

JS&D (317400) has 4 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩132M ($92K) in reported transaction value. The earliest filing StockDrifts holds for JS&D is dated 2025-03-27; the most recent is 2025-04-01. All of it is parsed from DART D001/D002 insider disclosures, the official disclosure system operated by the Financial Supervisory Service (Korea). Across these filings the average return since disclosure is +47.18%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

DateTypeSourceInsiderPositionSharesPrice at filingReturnValue
2025-04-01BUYMarket Buy
맹주국
maengjuguk
CFO300₩3,200+46.7%₩960K ($667)
2025-03-31BUYMarket Buy
맹주국
maengjuguk
CFO10.0K₩3,170+48.1%₩32M ($22K)
2025-03-28BUYMarket Buy
구본삼
Gubonsam
CEO19.0K₩3,215+46.0%₩61M ($42K)
2025-03-27BUYMarket Buy
구본삼
Gubonsam
CEO12.2K₩3,175+47.9%₩39M ($27K)

Frequently asked questions

Who has been buying JS&D stock?
2 distinct insiders have filed 4 disclosed insider purchases in JS&D (317400), most recently on 2025-04-01. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does JS&D have?
JS&D has 4 buy-side and 0 sell-side disclosures on record, covering ₩132M ($92K) in total reported value, spanning 2025-03-27 to 2025-04-01.
Where does StockDrifts get JS&D insider data?
From DART D001/D002 insider disclosures — the official filing system run by the Financial Supervisory Service (Korea). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from DART.
Do insider buys in Korean stocks predict returns?
Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean DART filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

Source filings

Every trade listed above is disclosed in DART D001/D002 insider disclosures, filed with the Financial Supervisory Service (Korea). View the original DART filings for JS&D. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.