Who has been buying Takamatsu Machinery Co., Ltd. stock?

6 distinct investors have filed 7 disclosed large-shareholding filings in Takamatsu Machinery Co., Ltd. (6155), most recently on 2025-10-15. 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 Takamatsu Machinery Co., Ltd. have?

Takamatsu Machinery Co., Ltd. has 7 buy-side and 3 sell-side disclosures on record, covering ¥985M ($6.4M) in total reported value, spanning 2022-05-12 to 2025-10-15.

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.

Takamatsu Machinery Co., Ltd. 6155

Company

高松機械工業株式会社Takamatsu Machinery Co., Ltd.

Investors

Buys

Total Value

¥985M ($6.4M)

Avg Return

+2.77%

Last Filing

2025-10-15

Takamatsu Machinery Co., Ltd. (6155) has 7 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥985M ($6.4M) in reported transaction value. The earliest filing StockDrifts holds for Takamatsu Machinery Co., Ltd. is dated 2022-05-12; the most recent is 2025-10-15. Across these filings the average return since disclosure is +2.77%, 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
2025-10-15	BUY	unknown	髙松宗一郎 Soichiro Takamatsu	activist	84.6K	¥452	+19.5%	¥38M ($247K)
2025-10-15	BUY	unknown	株式会社タカマツ Takamatsu Co., Ltd.	activist	957.0K	¥452	+19.5%	¥433M ($2.8M)
2025-10-15	BUY	unknown	株式会社タカマツ Takamatsu Co., Ltd.	activist	957.0K	¥452	+19.5%	¥433M ($2.8M)
2025-10-15	BUY	unknown	髙松宗一郎 Soichiro Takamatsu	activist	84.6K	¥452	+19.5%	¥38M ($247K)
2025-10-15	BUY	unknown	髙松喜与志 Kiyoshi Takamatsu	activist	181.7K	¥452	-	-
2025-10-15	BUY	unknown	株式会社タカマツ Takamatsu Co., Ltd.	activist	957.0K	¥452	-	-
2025-02-19	SELL	unknown	髙松喜与志 Kiyoshi Takamatsu	activist	182.3K	¥450	-20.0%	¥67M ($435K)
2025-02-19	BUY	unknown	株式会社タカマツ Takamatsu Co., Ltd.	activist	957.0K	¥450	+20.0%	¥66M ($426K)
2024-08-20	BUY	Market Buy	高松機械工業取引先持株会理事長井上英一郎 EIICHIRO INOUE	strategic	1.1M	¥483	+11.8%	¥54M ($350K)
2023-06-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	537.1K	¥536	-0.8%	¥73M ($469K)
2022-05-12	SELL	unknown	高松機械工業取引先持株会理事長小野田英治 HIDEHARU ONODA	strategic	0	¥650	+16.9%	¥617M ($4.0M)
2022-05-12	BUY	unknown	高松機械工業取引先持株会理事長井上英一郎 EIICHIRO INOUE	strategic	1.0M	¥650	-16.9%	¥671M ($4.3M)

Frequently asked questions

Who has been buying Takamatsu Machinery Co., Ltd. stock?: 6 distinct investors have filed 7 disclosed large-shareholding filings in Takamatsu Machinery Co., Ltd. (6155), most recently on 2025-10-15. 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 Takamatsu Machinery Co., Ltd. have?: Takamatsu Machinery Co., Ltd. has 7 buy-side and 3 sell-side disclosures on record, covering ¥985M ($6.4M) in total reported value, spanning 2022-05-12 to 2025-10-15.
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.