Who has been buying JMI stock?

1 distinct insiders have filed 29 disclosed insider purchases in JMI (033050), most recently on 2026-05-08. 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 JMI have?

JMI has 29 buy-side and 0 sell-side disclosures on record, covering ₩472M ($328K) in total reported value, spanning 2026-02-24 to 2026-05-08.

Where does StockDrifts get JMI 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.

JMI 033050

Company

제이엠아이JMI

Insiders

Buys

Total Value

₩472M ($328K)

Avg Return

-0.02%

Last Filing

2026-05-08

JMI (033050) has 29 disclosed insider purchases and 0 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩472M ($328K) in reported transaction value. The earliest filing StockDrifts holds for JMI is dated 2026-02-24; the most recent is 2026-05-08. 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 -0.02%, 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
2026-08-11	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	9.8K	₩940	-4.8%	₩9M ($6K)
2026-08-05	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	160.9K	₩933	+0.0%	₩154M ($107K)
2026-08-04	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	115.4K	₩924	+0.0%	₩107M ($74K)
2026-08-03	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	42.2K	₩914	+1.1%	₩38M ($26K)
2026-07-31	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	36.8K	₩939	-1.6%	₩32M ($23K)
2026-07-30	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	19.8K	₩898	+2.9%	₩17M ($12K)
2026-07-29	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	17.2K	₩893	+3.5%	₩14M ($10K)
2026-07-28	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	6.7K	₩868	+6.5%	₩5M ($4K)
2026-05-08	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	30.8K	₩996	+0.0%	₩31M ($21K)
2026-05-07	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	9.0K	₩1,007	-1.1%	₩9M ($6K)
2026-05-06	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	32.9K	₩1,031	-3.4%	₩34M ($24K)
2026-05-04	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	36.0K	₩1,008	-1.2%	₩36M ($25K)
2026-04-30	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	29.9K	₩1,025	-2.8%	₩31M ($21K)
2026-04-29	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	9.6K	₩1,079	+0.0%	₩10M ($7K)
2026-04-28	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	10.9K	₩1,086	-0.6%	₩12M ($8K)
2026-04-27	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	11.5K	₩1,042	+3.5%	₩12M ($8K)
2026-04-24	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	104.9K	₩1,042	+3.5%	₩109M ($76K)
2026-04-23	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	92.6K	₩1,033	+4.5%	₩96M ($66K)
2026-04-22	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	83.2K	₩1,108	-2.6%	₩92M ($64K)
2026-03-20	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	20.7K	-	-	-
2026-03-19	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	39.4K	-	-	-
2026-03-18	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	22.6K	-	-	-
2026-03-17	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	24.0K	-	-	-
2026-03-16	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	9.6K	-	-	-
2026-03-13	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	18.3K	-	-	-
2026-03-12	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	16.7K	-	-	-
2026-03-11	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	6.4K	-	-	-
2026-03-10	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	12.3K	-	-	-
2026-03-09	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	24.4K	-	-	-
2026-03-06	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	9.1K	-	-	-
2026-03-05	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO	5.8K	-	-	-
2026-03-04	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO/Chairman	21.2K	-	-	-
2026-03-03	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO/Chairman	18.7K	-	-	-
2026-02-27	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO/Chairman	6.0K	-	-	-
2026-02-26	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO/Chairman	8.0K	-	-	-
2026-02-25	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO/Chairman	20.0K	-	-	-
2026-02-24	BUY	Market Buy	정광훈 Jeong Gwang-hoon	CEO/Chairman	16.9K	-	-	-

Frequently asked questions

Who has been buying JMI stock?: 1 distinct insiders have filed 29 disclosed insider purchases in JMI (033050), most recently on 2026-05-08. 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 JMI have?: JMI has 29 buy-side and 0 sell-side disclosures on record, covering ₩472M ($328K) in total reported value, spanning 2026-02-24 to 2026-05-08.
Where does StockDrifts get JMI 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 JMI. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.