Who has been buying Three Billion stock?

2 distinct insiders have filed 0 disclosed insider purchases in Three Billion (394800), most recently on 2026-05-19. 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 Three Billion have?

Three Billion has 0 buy-side and 2 sell-side disclosures on record, covering ₩3.2B ($2.2M) in total reported value, spanning 2024-11-14 to 2026-05-19.

Where does StockDrifts get Three Billion 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.

Three Billion 394800

Company

쓰리빌리언Three Billion

Insiders

Buys

Total Value

₩3.2B ($2.2M)

Avg Return

-203.89%

Last Filing

2026-05-19

Three Billion (394800) has 0 disclosed insider purchases and 2 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩3.2B ($2.2M) in reported transaction value. The earliest filing StockDrifts holds for Three Billion is dated 2024-11-14; the most recent is 2026-05-19. All of it is parsed from DART D001/D002 insider disclosures, the official disclosure system operated by the Financial Supervisory Service (Korea).

Price & insider activity (12 months)

Recent insider trades

Date	Type	Source	Insider	Position	Shares	Price at filing	Return	Value
2026-05-19	BUY	주식매수선택권	서고훈 Seo Go-hoon	moving	6.0K	₩9,650	-3.7%	₩58M ($40K)
2026-05-19	BUY	주식매수선택권	이정설 Jeongseol Lee	moving	8.0K	₩9,650	-3.7%	₩77M ($54K)
2026-05-19	BUY	주식매수선택권	이숙진 Sookjin Lee	moving	8.0K	₩9,650	-3.7%	₩77M ($54K)
2026-05-19	BUY	주식매수선택권	이해인 Lee Hae-in	moving	13.0K	₩9,650	-3.7%	₩125M ($87K)
2025-12-02	BUY	주식매수선택권	이숙진 Sookjin Lee	moving	4.0K	₩13,530	+8.7%	₩54M ($38K)
2025-12-02	BUY	주식매수선택권	이해인 Lee Hae-in	moving	4.8K	₩13,530	+8.7%	₩65M ($45K)
2025-12-02	BUY	주식매수선택권	이경열 Lee Kyung-yeol	moving	4.0K	₩13,530	+8.7%	₩54M ($38K)
2025-12-02	BUY	주식매수선택권	이경열 Lee Kyung-yeol	moving	1.2K	₩13,530	+8.7%	₩16M ($11K)
2025-12-02	BUY	주식매수선택권	이해인 Lee Hae-in	moving	4.0K	₩13,530	+8.7%	₩54M ($38K)
2025-11-19	SELL	Market Sell	이정설 Jeongseol Lee	moving	-10.0K	₩11,300	-30.2%	₩113M ($78K)
2025-11-17	BUY	기타	서고훈 Seo Go-hoon	moving	8.9K	₩11,880	+23.8%	₩106M ($73K)
2025-11-17	BUY	기타	이숙진 Sookjin Lee	moving	18.7K	₩11,880	+23.8%	₩222M ($154K)
2025-04-11	SELL	임원퇴임	박순일 Park Soon-il	moving	-44.0K	₩6,190	-137.6%	₩272M ($189K)
2025-02-28	SELL	임원퇴임	강기현 Kihyun Kang	moving	-220.6K	₩6,000	-145.2%	₩1.3B ($919K)
2025-02-27	BUY	주식매수선택권	이해인 Lee Hae-in	moving	18.0K	₩6,440	+128.4%	₩116M ($81K)
2025-02-27	BUY	주식매수선택권	박순일 Park Soon-il	moving	4.0K	₩6,440	+128.4%	₩26M ($18K)
2025-02-27	BUY	주식매수선택권	강기현 Kihyun Kang	moving	10.0K	₩6,440	+128.4%	₩64M ($45K)
2024-12-10	BUY	주식매수선택권	박순일 Park Soon-il	moving	10.0K	₩4,890	+200.8%	₩49M ($34K)
2024-12-10	BUY	주식매수선택권	강기현 Kihyun Kang	moving	171.7K	₩4,890	+200.8%	₩840M ($583K)
2024-12-10	BUY	주식매수선택권	이숙진 Sookjin Lee	moving	49.6K	₩4,890	+200.8%	₩243M ($169K)
2024-11-18	SELL	Market Sell	한국산업은행 Korea Development Bank	-	-1.0M	₩3,080	-377.6%	₩3.1B ($2.1M)
2024-11-14	BUY	PROGRAM	이경열 Lee Kyung-yeol	moving	21.0K	₩4,100	+258.8%	₩86M ($60K)
2024-11-14	BUY	PROGRAM	박순일 Park Soon-il	moving	30.0K	₩4,100	+258.8%	₩123M ($85K)
2024-11-14	BUY	PROGRAM	금창원 Geumchangwon	moving	5.4M	₩4,100	+258.8%	₩22.1B ($15.4M)
2024-11-14	BUY	PROGRAM	이정설 Jeongseol Lee	moving	225.0K	₩4,100	+258.8%	₩923M ($641K)
2024-11-14	BUY	신규상장	한국산업은행 Korea Development Bank	-	3.9M	₩4,100	+258.8%	₩16.1B ($11.2M)
2024-11-14	BUY	PROGRAM	강기현 Kihyun Kang	moving	38.9K	₩4,100	+258.8%	₩159M ($111K)
2024-11-14	BUY	PROGRAM	김세환 Kim Se-hwan	moving	1.8M	₩4,100	+258.8%	₩7.4B ($5.1M)
2024-11-14	BUY	PROGRAM	서고훈 Seo Go-hoon	moving	180.0K	₩4,100	+258.8%	₩738M ($513K)

Frequently asked questions

Who has been buying Three Billion stock?: 2 distinct insiders have filed 0 disclosed insider purchases in Three Billion (394800), most recently on 2026-05-19. 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 Three Billion have?: Three Billion has 0 buy-side and 2 sell-side disclosures on record, covering ₩3.2B ($2.2M) in total reported value, spanning 2024-11-14 to 2026-05-19.
Where does StockDrifts get Three Billion 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 Three Billion. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.