Who has been buying Daejoo Electronic Materials stock?

6 distinct insiders have filed 11 disclosed insider purchases in Daejoo Electronic Materials (078600), most recently on 2026-04-29. 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 Daejoo Electronic Materials have?

Daejoo Electronic Materials has 11 buy-side and 11 sell-side disclosures on record, covering ₩30.0B ($20.8M) in total reported value, spanning 2021-07-02 to 2026-04-29.

Where does StockDrifts get Daejoo Electronic Materials 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.

Daejoo Electronic Materials 078600

Company

대주전자재료Daejoo Electronic Materials

Insiders

Buys

Total Value

₩30.0B ($20.8M)

Avg Return

+5.70%

Last Filing

2026-04-29

Daejoo Electronic Materials (078600) has 11 disclosed insider purchases and 11 disclosed disposals on record, filed by 6 distinct insiders. Together those filings cover ₩30.0B ($20.8M) in reported transaction value. The earliest filing StockDrifts holds for Daejoo Electronic Materials is dated 2021-07-02; the most recent is 2026-04-29. 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 +5.70%, 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
2026-08-07	BUY	Market Buy	김성욱 Seongwook Kim	moving	200	₩88,200	+5.3%	₩17M ($12K)
2026-04-29	BUY	Market Buy	국민연금공단 National Pension Service	-	7.3K	₩166,600	-4.9%	₩1.2B ($849K)
2026-04-29	SELL	Market Sell	국민연금공단 National Pension Service	-	-61.8K	₩166,600	+4.9%	₩10.3B ($7.1M)
2026-04-28	BUY	신규보고	국민연금공단 National Pension Service	-	1.5M	₩165,800	-4.4%	₩254.9B ($177.0M)
2026-04-28	BUY	신규주요주주	국민연금공단 National Pension Service	-	52.5K	₩165,800	-4.4%	₩8.7B ($6.0M)
2026-04-28	SELL	Market Sell	국민연금공단 National Pension Service	-	-16.5K	₩165,800	+4.4%	₩2.7B ($1.9M)
2026-04-10	SELL	Market Sell	국민연금공단 National Pension Service	-	-38.7K	₩123,800	-19.0%	₩4.8B ($3.3M)
2026-04-10	BUY	Market Buy	국민연금공단 National Pension Service	-	251	₩123,800	+19.0%	₩31M ($22K)
2026-04-09	SELL	Market Sell	국민연금공단 National Pension Service	-	-2.9K	₩116,600	-26.3%	₩333M ($231K)
2026-04-08	BUY	신규주요주주	국민연금공단 National Pension Service	-	9.6K	₩117,000	+25.9%	₩1.1B ($781K)
2026-04-08	BUY	신규보고	국민연금공단 National Pension Service	-	1.6M	₩117,000	+25.9%	₩181.5B ($126.0M)
2026-04-02	SELL	Market Sell	국민연금공단 National Pension Service	-	-15.7K	₩118,000	-24.8%	₩1.9B ($1.3M)
2026-04-02	BUY	Market Buy	국민연금공단 National Pension Service	-	6.0K	₩118,000	+24.8%	₩706M ($491K)
2026-04-01	BUY	신규주요주주	국민연금공단 National Pension Service	-	30.9K	₩127,700	+15.3%	₩3.9B ($2.7M)
2026-04-01	SELL	Market Sell	국민연금공단 National Pension Service	-	-21.2K	₩127,700	-15.3%	₩2.7B ($1.9M)
2026-04-01	BUY	신규보고	국민연금공단 National Pension Service	-	1.5M	₩127,700	+15.3%	₩197.3B ($137.0M)
2026-02-10	SELL	Market Sell	임종찬 Jongchan Lim	vice president	-1.1K	₩95,500	-1.4%	₩105M ($73K)
2025-07-28	BUY	Market Buy	임무현 Im Myo-hyeon	moving	254	₩76,700	+26.2%	₩19M ($14K)
2025-07-16	BUY	Market Buy	임무현 Im Myo-hyeon	moving	278	₩69,900	+38.5%	₩19M ($13K)
2025-05-30	BUY	Market Buy	임무현 Im Myo-hyeon	moving	1.2K	₩73,900	+31.0%	₩92M ($64K)
2025-05-22	BUY	Market Buy	임무현 Im Myo-hyeon	moving	6.0K	₩71,700	+35.0%	₩430M ($299K)
2025-04-01	BUY	Market Buy	임무현 Im Myo-hyeon	moving	4.3K	₩83,300	+16.2%	₩358M ($249K)
2025-03-31	BUY	Market Buy	임무현 Im Myo-hyeon	moving	3.0K	₩82,900	+16.8%	₩249M ($173K)
2025-03-28	BUY	Market Buy	임무현 Im Myo-hyeon	moving	11.0K	₩86,000	+12.6%	₩946M ($657K)
2025-02-19	SELL	Market Sell	임중규 Lim Jung-gyu	CEO	-3.0K	₩110,500	+12.4%	₩336M ($233K)
2025-01-17	SELL	Market Sell	송광현 Song Gwang-hyeon	Managing Director	-20.0K	₩104,200	+7.1%	₩2.1B ($1.4M)
2024-12-06	SELL	Market Sell	임무현 Im Myo-hyeon	moving	-600	₩87,900	-10.1%	₩53M ($37K)
2024-06-25	BUY	주식매수선택권	김문수 Moonsu Kim	moving	2.2K	₩144,700	-33.1%	₩313M ($218K)
2024-06-12	BUY	Market Buy	김동호 Kim Dong-ho	Managing Director	123	₩160,000	-39.5%	₩20M ($14K)
2024-06-03	SELL	Market Sell	임중규 Lim Jung-gyu	CEO	-5.0K	₩117,800	+17.8%	₩589M ($409K)
2024-03-01	BUY	신규보고	백은주 Baek Eun-joo	Director	2.8K	₩76,800	+26.0%	₩217M ($150K)
2024-03-01	BUY	신규보고	이영호 Youngho Lee	Director	6.4K	₩76,800	+26.0%	₩495M ($344K)
2021-07-02	BUY	자사주상여금	김문수 Moonsu Kim	moving	10	₩47,100	+105.5%	₩471K ($327)

Frequently asked questions

Who has been buying Daejoo Electronic Materials stock?: 6 distinct insiders have filed 11 disclosed insider purchases in Daejoo Electronic Materials (078600), most recently on 2026-04-29. 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 Daejoo Electronic Materials have?: Daejoo Electronic Materials has 11 buy-side and 11 sell-side disclosures on record, covering ₩30.0B ($20.8M) in total reported value, spanning 2021-07-02 to 2026-04-29.
Where does StockDrifts get Daejoo Electronic Materials 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 Daejoo Electronic Materials. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.