Who has been buying halmek holdings Co.,Ltd. stock?

5 distinct investors have filed 8 disclosed large-shareholding filings in halmek holdings Co.,Ltd. (7119), most recently on 2026-04-22. 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 halmek holdings Co.,Ltd. have?

halmek holdings Co.,Ltd. has 8 buy-side and 7 sell-side disclosures on record, covering ¥21.3B ($137.5M) in total reported value, spanning 2023-03-29 to 2026-04-22.

Do insider buys in Japanese stocks predict returns?

Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

halmek holdings Co.,Ltd. 7119

Company

株式会社ハルメクホールディングスhalmek holdings Co.,Ltd.

Investors

Buys

Total Value

¥21.3B ($137.5M)

Avg Return

+16.26%

Last Filing

2026-04-22

halmek holdings Co.,Ltd. (7119) has 8 disclosed large-shareholding filings and 7 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥21.3B ($137.5M) in reported transaction value. The earliest filing StockDrifts holds for halmek holdings Co.,Ltd. is dated 2023-03-29; the most recent is 2026-04-22. Across these filings the average return since disclosure is +16.26%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-04-22	BUY	unknown	山元雄太 Yuta Yamamoto	strategic	1.5M	¥1,544	-	¥32M ($209K)
2026-04-22	SELL	unknown	山元雄太 Yuta Yamamoto	strategic	1.5M	¥1,544	-36.9%	¥7M ($44K)
2026-04-13	SELL	unknown	宮澤孝夫	other	1.6M	¥1,579	-33.9%	¥24M ($158K)
2026-04-13	SELL	unknown	宮澤孝夫	other	1.6M	¥1,579	-33.9%	¥24M ($158K)
2026-04-13	SELL	unknown	IHドリーム株式会社	activist	1.2M	¥1,579	-33.9%	¥26M ($169K)
2026-04-13	SELL	unknown	IHドリーム株式会社	activist	1.2M	¥1,579	-33.9%	¥26M ($169K)
2025-11-06	BUY	unknown	山元雄太 Yuta Yamamoto	strategic	1.5M	¥1,335	-	¥134M ($863K)
2025-11-06	SELL	unknown	山元雄太 Yuta Yamamoto	strategic	1.5M	¥1,335	-58.4%	¥157M ($1.0M)
2025-02-17	SELL	unknown	松島陽介 Yosuke Matsushima	strategic	1.9M	¥1,109	-90.6%	¥134M ($863K)
2024-05-16	BUY	unknown	宮澤孝夫 Takao Miyazawa	other	1.6M	¥898	+135.4%	¥1.4B ($9.2M)
2024-05-16	BUY	unknown	宮澤孝夫 Takao Miyazawa	other	1.6M	¥898	+135.4%	¥1.4B ($9.2M)
2024-05-16	BUY	unknown	IHドリーム株式会社 IH Dream Co., Ltd.	activist	1.2M	¥898	+135.4%	¥1.1B ($7.0M)
2024-05-16	BUY	unknown	IHドリーム株式会社 IH Dream Co., Ltd.	activist	1.2M	¥898	+135.4%	¥1.1B ($7.0M)
2023-03-29	BUY	unknown	松島陽介 Yosuke Matsushima	strategic	1.9M	¥2,626	-19.5%	¥5.0B ($32.2M)
2023-03-29	BUY	unknown	山元雄太 Yuta Yamamoto	strategic	1.5M	¥2,626	-19.5%	¥4.0B ($25.8M)
2023-03-29	BUY	unknown	土屋淳一 Junichi Tsuchiya	other	800.0K	¥2,626	-19.5%	¥2.1B ($13.6M)
2023-03-29	BUY	unknown	宮澤孝夫 Takao Miyazawa	other	2.8M	¥2,626	-19.5%	¥7.4B ($47.7M)

Frequently asked questions

Who has been buying halmek holdings Co.,Ltd. stock?: 5 distinct investors have filed 8 disclosed large-shareholding filings in halmek holdings Co.,Ltd. (7119), most recently on 2026-04-22. 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 halmek holdings Co.,Ltd. have?: halmek holdings Co.,Ltd. has 8 buy-side and 7 sell-side disclosures on record, covering ¥21.3B ($137.5M) in total reported value, spanning 2023-03-29 to 2026-04-22.
Do insider buys in Japanese stocks predict returns?: Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.