Who has been buying Hyosung Heavy Industries stock?

3 distinct insiders have filed 546 disclosed insider purchases in Hyosung Heavy Industries (298040), most recently on 2026-06-30. 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 Hyosung Heavy Industries have?

Hyosung Heavy Industries has 546 buy-side and 559 sell-side disclosures on record, covering ₩2.95T ($2.0B) in total reported value, spanning 2024-01-02 to 2026-06-30.

Where does StockDrifts get Hyosung Heavy Industries 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.

Hyosung Heavy Industries 298040

Company

효성중공업Hyosung Heavy Industries

Insiders

Buys

546

Total Value

₩2.95T ($2.0B)

Avg Return

-14.89%

Last Filing

2026-06-30

Hyosung Heavy Industries (298040) has 546 disclosed insider purchases and 559 disclosed disposals on record, filed by 3 distinct insiders. Together those filings cover ₩2.95T ($2.0B) in reported transaction value. The earliest filing StockDrifts holds for Hyosung Heavy Industries is dated 2024-01-02; the most recent is 2026-06-30. 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 -14.89%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

Date	Type	Source	Insider	Position	Shares	Price at filing	Return	Value
2026-07-30	BUY	Market Buy	국민연금공단 National Pension Service	-	263	₩1,894,000	+40.2%	₩606M ($421K)
2026-07-30	SELL	Market Sell	국민연금공단 National Pension Service	-	-1.7K	₩1,894,000	-40.2%	₩4.1B ($2.8M)
2026-07-29	BUY	Market Buy	국민연금공단 National Pension Service	-	764	₩2,006,000	+32.4%	₩2.0B ($1.4M)
2026-07-29	SELL	Market Sell	국민연금공단 National Pension Service	-	-1.7K	₩2,006,000	-32.4%	₩4.4B ($3.0M)
2026-07-28	SELL	Market Sell	국민연금공단 National Pension Service	-	-897	₩2,324,000	-14.2%	₩2.4B ($1.7M)
2026-07-28	BUY	Market Buy	국민연금공단 National Pension Service	-	1.3K	₩2,324,000	+14.2%	₩3.6B ($2.5M)
2026-07-27	SELL	Market Sell	국민연금공단 National Pension Service	-	-600	₩2,625,000	-1.1%	₩1.7B ($1.2M)
2026-07-27	BUY	Market Buy	국민연금공단 National Pension Service	-	750	₩2,625,000	+1.1%	₩2.1B ($1.5M)
2026-07-24	BUY	Market Buy	국민연금공단 National Pension Service	-	2.3K	₩2,681,000	-1.0%	₩6.2B ($4.3M)
2026-07-24	SELL	Market Sell	국민연금공단 National Pension Service	-	-1.3K	₩2,681,000	+1.0%	₩3.5B ($2.4M)
2026-07-23	BUY	신규주요주주	국민연금공단 National Pension Service	-	2.7K	₩2,866,000	-7.4%	₩6.8B ($4.7M)
2026-07-23	SELL	Market Sell	국민연금공단 National Pension Service	-	-190	₩2,866,000	+7.4%	₩486M ($338K)
2026-07-23	BUY	신규보고	국민연금공단 National Pension Service	-	930.8K	₩2,866,000	-7.4%	₩2.7T ($1.9B)
2026-07-22	BUY	Market Buy	국민연금공단 National Pension Service	-	749	₩2,679,000	+0.1%	₩1.9B ($1.3M)
2026-07-22	SELL	Market Sell	국민연금공단 National Pension Service	-	-3.1K	₩2,679,000	-0.1%	₩7.9B ($5.5M)
2026-07-21	SELL	Market Sell	국민연금공단 National Pension Service	-	-3.4K	₩2,578,000	-4.0%	₩9.4B ($6.6M)
2026-07-21	BUY	Market Buy	국민연금공단 National Pension Service	-	2.5K	₩2,578,000	+4.0%	₩7.0B ($4.9M)
2026-07-20	SELL	Market Sell	국민연금공단 National Pension Service	-	-2.7K	₩2,539,000	-5.6%	₩7.7B ($5.3M)
2026-07-20	BUY	Market Buy	국민연금공단 National Pension Service	-	326	₩2,539,000	+5.6%	₩932M ($647K)
2026-07-16	SELL	Market Sell	국민연금공단 National Pension Service	-	-2.4K	₩2,789,000	+3.9%	₩6.2B ($4.3M)
2026-07-16	BUY	Market Buy	국민연금공단 National Pension Service	-	333	₩2,789,000	-3.9%	₩887M ($616K)
2026-07-15	BUY	Market Buy	국민연금공단 National Pension Service	-	750	₩2,868,000	-6.5%	₩2.0B ($1.4M)
2026-07-15	SELL	Market Sell	국민연금공단 National Pension Service	-	-486	₩2,868,000	+6.5%	₩1.3B ($902K)
2026-07-14	SELL	Market Sell	국민연금공단 National Pension Service	-	-825	₩2,677,000	-0.1%	₩2.4B ($1.7M)
2026-07-14	BUY	Market Buy	국민연금공단 National Pension Service	-	855	₩2,677,000	+0.1%	₩2.5B ($1.8M)
2026-07-13	BUY	Market Buy	국민연금공단 National Pension Service	-	1.2K	₩2,666,000	+0.6%	₩3.4B ($2.4M)
2026-07-13	SELL	Market Sell	국민연금공단 National Pension Service	-	-66	₩2,666,000	-0.6%	₩182M ($126K)
2026-07-10	SELL	Market Sell	국민연금공단 National Pension Service	-	-5.1K	₩2,924,000	+8.3%	₩13.8B ($9.6M)
2026-07-10	BUY	Market Buy	국민연금공단 National Pension Service	-	792	₩2,924,000	-8.3%	₩2.1B ($1.5M)
2026-07-09	SELL	Market Sell	국민연금공단 National Pension Service	-	-879	₩2,770,000	+3.2%	₩2.6B ($1.8M)
2026-07-09	BUY	Market Buy	국민연금공단 National Pension Service	-	136	₩2,770,000	-3.2%	₩395M ($274K)
2026-07-08	BUY	Market Buy	국민연금공단 National Pension Service	-	210	₩2,689,000	-0.3%	₩654M ($454K)
2026-07-08	SELL	Market Sell	국민연금공단 National Pension Service	-	-3.2K	₩2,689,000	+0.3%	₩9.8B ($6.8M)
2026-07-07	SELL	Market Sell	국민연금공단 National Pension Service	-	-237	₩2,902,000	+7.6%	₩768M ($534K)
2026-07-07	BUY	Market Buy	국민연금공단 National Pension Service	-	857	₩2,902,000	-7.6%	₩2.8B ($2.0M)
2026-07-06	SELL	Market Sell	국민연금공단 National Pension Service	-	-994	₩3,117,000	+14.0%	₩3.5B ($2.4M)
2026-07-03	BUY	Market Buy	국민연금공단 National Pension Service	-	1.7K	₩3,323,000	-19.3%	₩6.3B ($4.4M)
2026-07-03	SELL	Market Sell	국민연금공단 National Pension Service	-	-930	₩3,323,000	+19.3%	₩3.5B ($2.4M)
2026-07-02	BUY	Market Buy	국민연금공단 National Pension Service	-	3.6K	₩3,432,000	-21.9%	₩12.3B ($8.5M)
2026-07-02	SELL	Market Sell	국민연금공단 National Pension Service	-	-252	₩3,432,000	+21.9%	₩864M ($600K)
2026-07-01	SELL	Market Sell	국민연금공단 National Pension Service	-	-1.3K	₩3,718,000	+27.9%	₩4.2B ($2.9M)
2026-07-01	BUY	Market Buy	국민연금공단 National Pension Service	-	2.1K	₩3,718,000	-27.9%	₩6.9B ($4.8M)
2026-06-30	SELL	Market Sell	국민연금공단 National Pension Service	-	-1.1K	₩3,438,000	+3.3%	₩3.9B ($2.7M)
2026-06-30	BUY	Market Buy	국민연금공단 National Pension Service	-	9	₩3,438,000	-3.3%	₩31M ($21K)
2026-06-29	BUY	Market Buy	국민연금공단 National Pension Service	-	1.0K	₩3,274,000	+1.5%	₩3.3B ($2.3M)
2026-06-29	SELL	Market Sell	국민연금공단 National Pension Service	-	-3.4K	₩3,274,000	-1.5%	₩11.2B ($7.8M)
2026-06-26	BUY	Market Buy	국민연금공단 National Pension Service	-	207	₩3,103,000	+7.1%	₩642M ($446K)
2026-06-26	SELL	Market Sell	국민연금공단 National Pension Service	-	-3.1K	₩3,103,000	-7.1%	₩9.7B ($6.8M)
2026-06-25	SELL	Market Sell	국민연금공단 National Pension Service	-	-847	₩3,280,000	-1.3%	₩2.8B ($1.9M)
2026-06-25	BUY	Market Buy	국민연금공단 National Pension Service	-	2.2K	₩3,280,000	+1.3%	₩7.3B ($5.1M)

Showing the 50 most recent of 200 filings.

Frequently asked questions

Who has been buying Hyosung Heavy Industries stock?: 3 distinct insiders have filed 546 disclosed insider purchases in Hyosung Heavy Industries (298040), most recently on 2026-06-30. 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 Hyosung Heavy Industries have?: Hyosung Heavy Industries has 546 buy-side and 559 sell-side disclosures on record, covering ₩2.95T ($2.0B) in total reported value, spanning 2024-01-02 to 2026-06-30.
Where does StockDrifts get Hyosung Heavy Industries 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 Hyosung Heavy Industries. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.