Who has been buying Iida Group Holdings Co., Ltd. stock?

2 distinct investors have filed 5 disclosed large-shareholding filings in Iida Group Holdings Co., Ltd. (3291), most recently on 2026-04-10. 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 Iida Group Holdings Co., Ltd. have?

Iida Group Holdings Co., Ltd. has 5 buy-side and 0 sell-side disclosures on record, covering ¥3.4B ($22.0M) in total reported value, spanning 2022-04-01 to 2026-04-10.

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.

Iida Group Holdings Co., Ltd. 3291

Company

飯田グループホールディングス株式会社Iida Group Holdings Co., Ltd.

Investors

Buys

Total Value

¥3.4B ($22.0M)

Avg Return

+5.10%

Last Filing

2026-04-10

Iida Group Holdings Co., Ltd. (3291) has 5 disclosed large-shareholding filings and 0 disclosed disposals on record, filed by 2 distinct investors. Together those filings cover ¥3.4B ($22.0M) in reported transaction value. The earliest filing StockDrifts holds for Iida Group Holdings Co., Ltd. is dated 2022-04-01; the most recent is 2026-04-10. Across these filings the average return since disclosure is +5.10%, 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
2026-04-10	BUY	acquisition	西河洋一 Yoichi Nishikawa	activist	27.9M	¥2,460.5	-	¥483M ($3.1M)
2026-04-10	BUY	acquisition	西河洋一 Yoichi Nishikawa	activist	27.9M	¥2,460.5	-	¥483M ($3.1M)
2025-03-21	BUY	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	27.0M	¥2,342	-3.3%	¥3.4B ($22.0M)
2023-08-21	BUY	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	25.5M	¥2,317.5	-2.2%	¥6.6B ($42.3M)
2022-11-08	BUY	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	23.4M	¥2,093	+8.3%	¥6.3B ($40.5M)
2022-08-01	BUY	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	20.4M	¥2,218	+2.2%	¥6.4B ($41.3M)
2022-04-01	BUY	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	17.8M	¥2,125	+6.6%	¥6.6B ($42.8M)

Frequently asked questions

Who has been buying Iida Group Holdings Co., Ltd. stock?: 2 distinct investors have filed 5 disclosed large-shareholding filings in Iida Group Holdings Co., Ltd. (3291), most recently on 2026-04-10. 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 Iida Group Holdings Co., Ltd. have?: Iida Group Holdings Co., Ltd. has 5 buy-side and 0 sell-side disclosures on record, covering ¥3.4B ($22.0M) in total reported value, spanning 2022-04-01 to 2026-04-10.
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.