Who has been buying iRidge, Inc. stock?

2 distinct investors have filed 4 disclosed large-shareholding filings in iRidge, Inc. (3917), most recently on 2026-02-06. 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 iRidge, Inc. have?

iRidge, Inc. has 4 buy-side and 3 sell-side disclosures on record, covering ¥128M ($824K) in total reported value, spanning 2022-10-21 to 2026-02-06.

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.

iRidge, Inc. 3917

Company

株式会社アイリッジiRidge, Inc.

Investors

Buys

Total Value

¥128M ($824K)

Avg Return

-20.36%

Last Filing

2026-02-06

iRidge, Inc. (3917) has 4 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 2 distinct investors. Together those filings cover ¥128M ($824K) in reported transaction value. The earliest filing StockDrifts holds for iRidge, Inc. is dated 2022-10-21; the most recent is 2026-02-06. Across these filings the average return since disclosure is -20.36%, 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
2026-02-06	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	217.0K	¥624	+22.1%	¥115M ($741K)
2025-08-13	BUY	Market Buy	小田健太郎 KENTARO ODA	activist	2.8M	¥507	-4.1%	¥71M ($461K)
2025-08-13	BUY	unknown	小田健太郎 KENTARO ODA	activist	2.5M	¥507	-	¥44M ($284K)
2025-08-13	BUY	unknown	小田健太郎 KENTARO ODA	activist	2.8M	¥507	-	¥71M ($461K)
2025-08-13	SELL	unknown	小田健太郎 KENTARO ODA	activist	2.8M	¥507	+4.1%	¥82M ($531K)
2025-08-13	BUY	Market Buy	小田健太郎 KENTARO ODA	activist	2.5M	¥507	-4.1%	¥44M ($284K)
2025-08-13	BUY	unknown	小田健太郎 KENTARO ODA	activist	2.8M	¥507	-	¥82M ($531K)
2024-02-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	367.1K	¥511	+4.9%	¥41M ($262K)
2023-07-24	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	441.8K	¥690	-29.6%	¥56M ($363K)
2022-10-21	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	357.0K	¥787	-38.3%	¥281M ($1.8M)

Frequently asked questions

Who has been buying iRidge, Inc. stock?: 2 distinct investors have filed 4 disclosed large-shareholding filings in iRidge, Inc. (3917), most recently on 2026-02-06. 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 iRidge, Inc. have?: iRidge, Inc. has 4 buy-side and 3 sell-side disclosures on record, covering ¥128M ($824K) in total reported value, spanning 2022-10-21 to 2026-02-06.
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.