Who has been buying Endo Manufacturing Co., Ltd. stock?

5 distinct investors have filed 4 disclosed large-shareholding filings in Endo Manufacturing Co., Ltd. (7841), most recently on 2026-05-13. 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 Endo Manufacturing Co., Ltd. have?

Endo Manufacturing Co., Ltd. has 4 buy-side and 6 sell-side disclosures on record, covering ¥948M ($6.1M) in total reported value, spanning 2021-04-21 to 2026-05-13.

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.

Endo Manufacturing Co., Ltd. 7841

Company

株式会社遠藤製作所Endo Manufacturing Co., Ltd.

Investors

Buys

Total Value

¥948M ($6.1M)

Avg Return

+51.41%

Last Filing

2026-05-13

Endo Manufacturing Co., Ltd. (7841) has 4 disclosed large-shareholding filings and 6 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥948M ($6.1M) in reported transaction value. The earliest filing StockDrifts holds for Endo Manufacturing Co., Ltd. is dated 2021-04-21; the most recent is 2026-05-13. Across these filings the average return since disclosure is +51.41%, 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
2026-05-13	BUY	unknown	株式会社遠藤栄松ファンデーション	strategic	1.9M	¥1,055	-	-
2026-05-13	BUY	unknown	遠藤栄之助	strategic	380.0K	¥1,055	-	-
2026-04-17	SELL	Market Buy	清原達郎 Tatsuro Kiyohara	passive	471.1K	¥1,111	+2.3%	¥111M ($717K)
2026-04-08	SELL	Market Buy	清原達郎 Tatsuro Kiyohara	passive	571.6K	¥1,120	+3.0%	¥117M ($757K)
2023-11-01	SELL	unknown	タワー投資顧問株式会社 TOWER INVESTMENT MANAGEMENT Co.,Ltd	unknown	0	¥777	-39.8%	¥525M ($3.4M)
2023-10-24	BUY	Market Buy	清原達郎 Tatsuro Kiyohara	passive	676.2K	¥771	-	¥521M ($3.4M)
2023-10-24	BUY	acquisition	清原達郎 Tatsuro Kiyohara	passive	676.2K	¥771	+40.9%	¥521M ($3.4M)
2023-09-01	SELL	Market Buy	タワー投資顧問株式会社 TOWER INVESTMENT MANAGEMENT Co.,Ltd	passive	676.2K	¥758	-43.3%	¥3M ($18K)
2023-08-08	SELL	Market Buy	タワー投資顧問株式会社 TOWER INVESTMENT MANAGEMENT Co.,Ltd	activist	680.0K	¥768	-41.4%	¥96M ($618K)
2022-10-06	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	26.2K	¥774	+40.3%	¥17M ($108K)
2022-09-22	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	478.5K	¥804	+35.1%	¥385M ($2.5M)
2021-05-14	SELL	Market Buy	タワー投資顧問株式会社 TOWER INVESTMENT MANAGEMENT Co.,Ltd	activist	804.6K	¥671	-61.9%	¥604M ($3.9M)
2021-04-21	BUY	Market Buy	タワー投資顧問株式会社 TOWER INVESTMENT MANAGEMENT Co.,Ltd	activist	1.7M	¥635	+71.0%	¥25M ($162K)

Frequently asked questions

Who has been buying Endo Manufacturing Co., Ltd. stock?: 5 distinct investors have filed 4 disclosed large-shareholding filings in Endo Manufacturing Co., Ltd. (7841), most recently on 2026-05-13. 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 Endo Manufacturing Co., Ltd. have?: Endo Manufacturing Co., Ltd. has 4 buy-side and 6 sell-side disclosures on record, covering ¥948M ($6.1M) in total reported value, spanning 2021-04-21 to 2026-05-13.
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.