Who has been buying I'rom Group Co., Ltd. stock?

10 distinct investors have filed 17 disclosed large-shareholding filings in I'rom Group Co., Ltd. (2372), most recently on 2025-03-24. 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 I'rom Group Co., Ltd. have?

I'rom Group Co., Ltd. has 17 buy-side and 26 sell-side disclosures on record, covering ¥32.9B ($212.0M) in total reported value, spanning 2021-04-30 to 2025-03-24.

Where does StockDrifts get I'rom Group 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.

I'rom Group Co., Ltd. 2372

Company

株式会社アイロムグループI'rom Group Co., Ltd.

Investors

Buys

Total Value

¥32.9B ($212.0M)

Avg Return

+1.53%

Last Filing

2025-03-24

I'rom Group Co., Ltd. (2372) has 17 disclosed large-shareholding filings and 26 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥32.9B ($212.0M) in reported transaction value. The earliest filing StockDrifts holds for I'rom Group Co., Ltd. is dated 2021-04-30; the most recent is 2025-03-24. 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 +1.53%, 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
2025-03-24	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	35.2K	¥2,785	-0.2%	¥436M ($2.8M)
2025-03-24	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	8.2K	¥2,785	-0.2%	¥2.1B ($13.4M)
2025-03-19	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	239.3K	¥2,785	-0.2%	¥34M ($222K)
2025-03-19	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	66.7K	¥2,785	-0.2%	¥897M ($5.8M)
2025-03-19	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	173.3K	¥2,785	-0.2%	¥241M ($1.6M)
2025-03-11	SELL	negotiated	森利恵 Rie Mori	unknown	0	¥2,784	-0.2%	¥2.3B ($14.8M)
2025-03-11	BUY	unknown	ビー・エックス・ジェイ・ビー・ツー・ホールディング株式会社 BXJB II Holding KK	activist	10.6M	¥2,784	+0.2%	¥29.5B ($190.4M)
2025-03-11	BUY	acquisition	ビー・エックス・ジェイ・ビー・ツー・ホールディング株式会社 BXJB II Holding KK	activist	8.9M	¥2,784	+0.2%	¥24.9B ($160.6M)
2025-03-11	SELL	negotiated	森豊隆 Toyotaka Mori	activist	1.7M	¥2,784	-0.2%	¥8.7B ($56.1M)
2025-03-06	SELL	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	5.7K	¥2,784	-0.2%	¥2.4B ($15.7M)
2025-03-06	BUY	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	387.8K	¥2,784	+0.2%	¥1.0B ($6.8M)
2025-02-21	SELL	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	191.9K	¥2,794	+0.1%	¥3M ($22K)
2025-02-21	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	752.2K	¥2,794	-0.1%	¥521M ($3.4M)
2025-02-20	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	879.3K	¥2,794	-0.1%	¥2.5B ($15.9M)
2025-02-20	BUY	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	11.5K	¥2,794	-0.1%	¥32M ($208K)
2025-01-09	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	252.0K	¥2,784	-0.2%	¥10M ($66K)
2025-01-09	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	388.2K	¥2,784	-0.2%	¥27M ($177K)
2025-01-09	SELL	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー(Morgan Stanley & Co. International plc) Morgan Stanley & Co. International plc	other	346.6K	¥2,784	-0.2%	¥1.3B ($8.6M)
2025-01-09	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	259.5K	¥2,784	+0.2%	¥357M ($2.3M)
2024-12-19	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー(Morgan Stanley & Co. International plc) Morgan Stanley & Co. International plc	other	826.1K	¥2,754	+1.3%	¥2.3B ($14.7M)
2024-12-06	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	194.1K	¥2,593	+7.6%	¥93M ($599K)
2024-12-06	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	566.3K	¥2,593	+7.6%	¥269M ($1.7M)
2024-12-05	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー(Morgan Stanley & Co. International plc) Morgan Stanley & Co. International plc	other	826.7K	¥2,589	+7.8%	¥2.1B ($13.8M)
2024-10-04	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	130.8K	¥2,785	+0.2%	¥333M ($2.2M)
2024-10-04	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	255.6K	¥2,785	+0.2%	¥7M ($44K)
2024-10-04	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	399.1K	¥2,785	-0.2%	¥405M ($2.6M)
2024-07-22	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	158.5K	¥2,771	+0.7%	¥439M ($2.8M)
2024-07-22	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	462.7K	¥2,771	+0.7%	¥1.3B ($8.3M)
2024-07-03	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	252.9K	¥2,768	+0.8%	¥700M ($4.5M)
2024-07-03	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	544.1K	¥2,768	+0.8%	¥396M ($2.6M)
2024-07-03	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	11.1K	¥2,768	-0.8%	¥311M ($2.0M)
2024-06-05	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	252.5K	¥2,787	+0.1%	¥704M ($4.5M)
2024-06-05	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	400.9K	¥2,787	+0.1%	¥1.1B ($7.2M)
2024-06-05	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.4K	¥2,787	+0.1%	¥4M ($25K)
2024-05-20	SELL	negotiated	森利恵 Rie Mori	activist	825.0K	¥2,782	-0.3%	¥3M ($22K)
2024-05-20	SELL	negotiated	森利恵 Rie Mori	activist	825.0K	¥2,782	-0.3%	¥3M ($22K)
2024-05-20	SELL	negotiated	森豊隆 Toyotaka Mori	activist	4.8M	¥2,782	-0.3%	¥7M ($44K)
2024-05-20	SELL	negotiated	森豊隆 Toyotaka Mori	activist	4.8M	¥2,782	-0.3%	¥7M ($44K)
2022-10-19	SELL	negotiated	森利恵 Rie Mori	activist	825.0K	¥2,728	-2.3%	¥3M ($22K)
2022-10-19	SELL	negotiated	森豊隆 Toyotaka Mori	activist	4.8M	¥2,728	-2.3%	¥20M ($130K)
2021-08-16	SELL	negotiated	森豊隆 Toyotaka Mori	activist	4.8M	¥1,939	-43.9%	¥14M ($92K)
2021-08-16	SELL	negotiated	森利恵 Rie Mori	activist	825.0K	¥1,939	-43.9%	¥2M ($15K)
2021-08-16	SELL	negotiated	森利恵 Rie Mori	activist	825.0K	¥1,939	-43.9%	¥2M ($15K)
2021-08-16	SELL	negotiated	森豊隆 Toyotaka Mori	activist	4.8M	¥1,939	-43.9%	¥14M ($92K)
2021-04-30	SELL	negotiated	森利恵 Rie Mori	activist	825.0K	¥2,443	-14.2%	¥3M ($19K)
2021-04-30	SELL	negotiated	森豊隆 Toyotaka Mori	activist	4.8M	¥2,443	-14.2%	¥3M ($19K)

Frequently asked questions

Who has been buying I'rom Group Co., Ltd. stock?: 10 distinct investors have filed 17 disclosed large-shareholding filings in I'rom Group Co., Ltd. (2372), most recently on 2025-03-24. 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 I'rom Group Co., Ltd. have?: I'rom Group Co., Ltd. has 17 buy-side and 26 sell-side disclosures on record, covering ¥32.9B ($212.0M) in total reported value, spanning 2021-04-30 to 2025-03-24.
Where does StockDrifts get I'rom Group 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 I'rom Group Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.