Who has been buying Izutsuya Co., Ltd. stock?

3 distinct investors have filed 14 disclosed large-shareholding filings in Izutsuya Co., Ltd. (8260), most recently on 2026-04-01. 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 Izutsuya Co., Ltd. have?

Izutsuya Co., Ltd. has 14 buy-side and 1 sell-side disclosures on record, covering ¥208M ($1.3M) in total reported value, spanning 2023-11-02 to 2026-04-01.

Where does StockDrifts get Izutsuya Co., Ltd. insider data?

From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.

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.

Izutsuya Co., Ltd. 8260

Company

株式会社井筒屋Izutsuya Co., Ltd.

Investors

Buys

Total Value

¥208M ($1.3M)

Avg Return

+10.55%

Last Filing

2026-04-01

Izutsuya Co., Ltd. (8260) has 14 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥208M ($1.3M) in reported transaction value. The earliest filing StockDrifts holds for Izutsuya Co., Ltd. is dated 2023-11-02; the most recent is 2026-04-01. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). Across these filings the average return since disclosure is +10.55%, 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
2026-05-26	BUY	Market Buy	日本アジア投資株式会社	activist	550.0K	¥386	+0.0%	¥131M ($846K)
2026-05-26	BUY	Market Buy	ガバナンス・パートナーズ株式会社	activist	1.2M	¥386	+0.0%	¥472M ($3.0M)
2026-05-20	SELL	unknown	青柳和洋 KAZUHIRO AOYAGI	activist	423.1K	¥430	+9.5%	¥291M ($1.9M)
2026-04-01	BUY	Market Buy	日本アジア投資株式会社	activist	210.0K	¥466	-8.4%	¥98M ($632K)
2026-04-01	BUY	Market Buy	ガバナンス・パートナーズ株式会社	activist	1.2M	¥466	-8.4%	¥569M ($3.7M)
2026-03-31	SELL	unknown	青柳和洋 KAZUHIRO AOYAGI	activist	1.1M	¥462	+7.6%	¥156M ($1.0M)
2025-09-30	BUY	Market Buy	青柳和洋 KAZUHIRO AOYAGI	activist	1.4M	¥433	+4.6%	¥56M ($362K)
2025-09-11	BUY	Market Buy	ガバナンス・パートナーズ株式会社 Governance Partners Co., Ltd.	activist	1.2M	¥430	+5.3%	¥526M ($3.4M)
2024-12-16	BUY	Market Buy	青柳和洋 KAZUHIRO AOYAGI	other	1.3M	¥436	+3.9%	¥54M ($346K)
2024-08-13	BUY	Market Buy	青柳和洋 KAZUHIRO AOYAGI	activist	1.2M	¥422	+7.3%	¥66M ($425K)
2024-08-08	BUY	Market Buy	青柳和洋 KAZUHIRO AOYAGI	activist	1.0M	¥415	+9.2%	¥54M ($347K)
2024-07-11	BUY	Market Buy	ガバナンス・パートナーズ株式会社 Governance Partners Co., Ltd.	activist	1.2M	¥461	-1.7%	¥53M ($345K)
2024-05-15	BUY	Market Buy	ガバナンス・パートナーズ株式会社 Governance Partners Inc.	activist	1.2M	¥516	-12.2%	¥60M ($386K)
2024-04-23	BUY	Market Buy	ガバナンス・パートナーズ株式会社 Governance Partners Inc.	activist	1.1M	¥445	+1.8%	¥61M ($392K)
2024-04-02	BUY	Market Buy	青柳和洋 KAZUHIRO AOYAGI	activist	898.6K	¥377	+20.2%	¥53M ($343K)
2024-03-22	BUY	Market Buy	青柳和洋 KAZUHIRO AOYAGI	activist	757.2K	¥374	+21.1%	¥283M ($1.8M)
2024-03-22	BUY	Market Buy	青柳和洋 KAZUHIRO AOYAGI	activist	757.2K	¥374	+21.1%	¥51M ($330K)
2024-03-19	BUY	Market Buy	青柳和洋 KAZUHIRO AOYAGI	activist	620.6K	¥372	+21.8%	¥231M ($1.5M)
2024-01-26	BUY	Market Buy	ガバナンス・パートナーズ株式会社 Governance Partners Inc.	activist	970.0K	¥355	+27.6%	¥49M ($316K)
2024-01-19	BUY	Market Buy	ガバナンス・パートナーズ株式会社 Governance Partners Inc.	activist	832.0K	¥358	+26.5%	¥42M ($270K)
2023-12-27	BUY	Market Buy	ガバナンス・パートナーズ株式会社 Governance Partners Inc.	activist	715.0K	¥379	+19.5%	¥53M ($342K)
2023-11-02	BUY	Market Buy	ガバナンス・パートナーズ株式会社 Governance Partners Inc.	activist	575.0K	¥355	+27.6%	¥204M ($1.3M)

Frequently asked questions

Who has been buying Izutsuya Co., Ltd. stock?: 3 distinct investors have filed 14 disclosed large-shareholding filings in Izutsuya Co., Ltd. (8260), most recently on 2026-04-01. 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 Izutsuya Co., Ltd. have?: Izutsuya Co., Ltd. has 14 buy-side and 1 sell-side disclosures on record, covering ¥208M ($1.3M) in total reported value, spanning 2023-11-02 to 2026-04-01.
Where does StockDrifts get Izutsuya Co., Ltd. insider data?: From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.
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.

Source filings

Every trade listed above is disclosed in EDINET large-shareholding (5%+) reports, filed with the Financial Services Agency (Japan). View the original EDINET filings for Izutsuya Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.