Who has been buying Isetan Mitsukoshi Holdings Ltd. stock?

12 distinct investors have filed 27 disclosed large-shareholding filings in Isetan Mitsukoshi Holdings Ltd. (3099), most recently on 2026-05-12. 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 Isetan Mitsukoshi Holdings Ltd. have?

Isetan Mitsukoshi Holdings Ltd. has 27 buy-side and 20 sell-side disclosures on record, covering ¥162.6B ($1.0B) in total reported value, spanning 2021-03-19 to 2026-05-12.

Where does StockDrifts get Isetan Mitsukoshi Holdings 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.

Isetan Mitsukoshi Holdings Ltd. 3099

Company

株式会社三越伊勢丹ホールディングスIsetan Mitsukoshi Holdings Ltd.

Investors

Buys

Total Value

¥162.6B ($1.0B)

Avg Return

+87.70%

Last Filing

2026-05-12

Isetan Mitsukoshi Holdings Ltd. (3099) has 27 disclosed large-shareholding filings and 20 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥162.6B ($1.0B) in reported transaction value. The earliest filing StockDrifts holds for Isetan Mitsukoshi Holdings Ltd. is dated 2021-03-19; the most recent is 2026-05-12. 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 +87.70%, 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
2026-07-23	SELL	Market Buy	ティー・ロウ・プライス・インターナショナル・リミテッド T. Rowe Price International Ltd.	passive	7.0M	¥3,668	+3.3%	¥5.9B ($38.3M)
2026-07-23	SELL	Market Buy	ティー・ロウ・プライス・アソシエイツ,インク T. Rowe Price Associates, Inc.	passive	9.9M	¥3,668	+3.3%	¥13.1B ($84.3M)
2026-05-12	SELL	Market Buy	ティー・ロウ・プライス・インターナショナル・リミテッド T. Rowe Price International Ltd.	passive	8.6M	¥3,090	-14.2%	¥227M ($1.5M)
2026-05-12	SELL	Market Buy	ティー・ロウ・プライス・アソシエイツ,インク T. Rowe Price Associates, Inc.	passive	13.5M	¥3,090	-14.2%	¥11.7B ($75.4M)
2026-03-19	SELL	unknown	野村アセットマネジメント株式会社	other	23.0M	¥2,832.5	-9.9%	¥71.6B ($461.7M)
2026-03-19	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	345.2K	¥2,832.5	-9.9%	¥1.1B ($6.9M)
2026-03-19	SELL	unknown	野村證券株式会社	other	11.6K	¥2,832.5	-9.9%	¥36M ($233K)
2025-10-06	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	27.8M	¥2,728.5	+14.1%	¥7.3B ($46.9M)
2025-10-06	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	430.9K	¥2,728.5	-14.1%	¥41.5B ($267.8M)
2025-09-19	SELL	Market Buy	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	9.7M	¥2,859	-8.9%	¥435M ($2.8M)
2025-09-19	BUY	Market Buy	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	14.2M	¥2,859	+8.9%	¥2.0B ($12.6M)
2025-09-19	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	396.1K	¥2,859	+8.9%	¥1.1B ($7.3M)
2025-09-01	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	285.9K	¥2,520.5	-23.6%	¥3.1B ($19.8M)
2025-09-01	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	4.7M	¥2,520.5	+23.6%	¥288M ($1.9M)
2025-09-01	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	8.5M	¥2,520.5	-23.6%	¥5.6B ($35.9M)
2025-09-01	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	2.6M	¥2,520.5	-23.6%	¥239.6B ($1.5B)
2025-08-06	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	9.8M	¥2,309	-34.9%	¥1.7B ($10.8M)
2025-08-06	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	13.5M	¥2,309	-34.9%	¥439M ($2.8M)
2025-08-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	396.1K	¥2,309	+34.9%	¥915M ($5.9M)
2025-07-22	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	10.5M	¥2,144.5	+45.2%	¥1.1B ($7.4M)
2025-07-22	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	13.7M	¥2,144.5	-45.2%	¥2.1B ($13.7M)
2025-07-22	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	396.1K	¥2,144.5	+45.2%	¥849M ($5.5M)
2025-06-06	BUY	Market Buy	ティー・ロウ・プライス・アソシエイツ T. Rowe Price Associates	passive	17.9M	¥2,190.5	+42.2%	¥10.5B ($67.7M)
2025-06-06	BUY	Market Buy	ティー・ロウ・プライス・インターナショナル・リミテッド T. Rowe Price International Ltd.	passive	9.0M	¥2,190.5	+42.2%	¥1.9B ($12.4M)
2025-05-21	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	10.0M	¥2,188	-42.3%	¥749M ($4.8M)
2025-05-21	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	14.7M	¥2,188	+42.3%	¥499M ($3.2M)
2025-05-21	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	396.1K	¥2,188	-42.3%	¥249.6B ($1.6B)
2025-04-18	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	25.1M	¥1,736.5	+79.3%	¥1.5B ($9.8M)
2025-04-18	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	587.9K	¥1,736.5	-79.3%	¥13.2B ($85.2M)
2025-04-18	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	180.7K	¥1,736.5	+79.3%	¥6.6B ($42.6M)
2025-04-07	BUY	Market Buy	ティー・ロウ・プライス・アソシエイツ T. Rowe Price Associates	passive	13.1M	¥1,730	+80.0%	¥395M ($2.5M)
2025-04-07	BUY	Market Buy	ティー・ロウ・プライス・インターナショナル・リミテッド T. Rowe Price International Ltd.	passive	8.1M	¥1,730	+80.0%	¥1.9B ($12.3M)
2025-04-04	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	24.2M	¥1,842	+69.1%	¥10.2B ($66.0M)
2025-04-04	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	157.1K	¥1,842	+69.1%	¥25.2B ($162.7M)
2025-04-04	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	638.0K	¥1,842	+69.1%	¥1.2B ($7.6M)
2025-03-24	BUY	Market Buy	ティー・ロウ・プライス・インターナショナル・リミテッド T. Rowe Price International Ltd.	passive	7.1M	¥2,231	+39.6%	¥15.8B ($102.1M)
2025-03-24	BUY	Market Buy	ティー・ロウ・プライス・アソシエイツ T. Rowe Price Associates	passive	13.1M	¥2,231	+39.6%	¥29.1B ($187.9M)
2024-11-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	19.2M	¥2,307	+35.0%	¥43.7B ($281.8M)
2024-11-06	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.6M	¥2,307	+35.0%	¥243.1B ($1.6B)
2023-12-04	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	1.6M	¥1,685.5	+84.8%	¥2.7B ($17.2M)
2023-12-04	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	4.8M	¥1,685.5	+84.8%	¥8.0B ($51.7M)
2023-12-04	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	11.1M	¥1,685.5	+84.8%	¥18.8B ($121.2M)
2023-12-04	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	3.7M	¥1,685.5	+84.8%	¥6.3B ($40.7M)
2023-10-16	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	10.7M	¥1,653.5	-88.3%	¥5.1B ($32.6M)
2023-10-16	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	4.8M	¥1,653.5	+88.3%	¥919M ($5.9M)
2023-10-16	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	3.7M	¥1,653.5	-88.3%	¥1.4B ($8.9M)
2023-01-10	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	23.7M	¥1,376	-126.3%	¥328M ($2.1M)
2023-01-10	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	502.4K	¥1,376	-126.3%	¥273M ($1.8M)
2022-12-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	24.0M	¥1,331	+134.0%	¥31.6B ($203.6M)
2022-12-21	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	704.9K	¥1,331	+134.0%	¥938M ($6.1M)

Showing the 50 most recent of 56 filings.

Frequently asked questions

Who has been buying Isetan Mitsukoshi Holdings Ltd. stock?: 12 distinct investors have filed 27 disclosed large-shareholding filings in Isetan Mitsukoshi Holdings Ltd. (3099), most recently on 2026-05-12. 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 Isetan Mitsukoshi Holdings Ltd. have?: Isetan Mitsukoshi Holdings Ltd. has 27 buy-side and 20 sell-side disclosures on record, covering ¥162.6B ($1.0B) in total reported value, spanning 2021-03-19 to 2026-05-12.
Where does StockDrifts get Isetan Mitsukoshi Holdings 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 Isetan Mitsukoshi Holdings Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.