Who has been buying MITSUI-SOKO HOLDINGS Co., Ltd. stock?

17 distinct investors have filed 39 disclosed large-shareholding filings in MITSUI-SOKO HOLDINGS Co., Ltd. (9302), most recently on 2026-04-07. 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 MITSUI-SOKO HOLDINGS Co., Ltd. have?

MITSUI-SOKO HOLDINGS Co., Ltd. has 39 buy-side and 33 sell-side disclosures on record, covering ¥48.8B ($314.9M) in total reported value, spanning 2021-06-04 to 2026-04-07.

Where does StockDrifts get MITSUI-SOKO HOLDINGS 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.

MITSUI-SOKO HOLDINGS Co., Ltd. 9302

Company

三井倉庫ホールディングス株式会社MITSUI-SOKO HOLDINGS Co., Ltd.

Investors

Buys

Total Value

¥48.8B ($314.9M)

Avg Return

+78.25%

Last Filing

2026-04-07

MITSUI-SOKO HOLDINGS Co., Ltd. (9302) has 39 disclosed large-shareholding filings and 33 disclosed disposals on record, filed by 17 distinct investors. Together those filings cover ¥48.8B ($314.9M) in reported transaction value. The earliest filing StockDrifts holds for MITSUI-SOKO HOLDINGS Co., Ltd. is dated 2021-06-04; the most recent is 2026-04-07. 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 +78.25%, 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	unknown	みずほ信託銀行株式会社	unknown	0	¥3,638	+7.0%	¥4.9B ($31.3M)
2026-07-23	BUY	unknown	みずほ証券株式会社	other	1.9M	¥3,638	-7.0%	¥6.8B ($44.1M)
2026-07-23	BUY	unknown	アセットマネジメントOne株式会社	other	1.3M	¥3,638	-7.0%	¥4.9B ($31.4M)
2026-07-07	SELL	unknown	アセットマネジメントOne株式会社	other	1.3M	¥3,558	+11.5%	¥111M ($716K)
2026-07-07	BUY	Market Buy	みずほ信託銀行株式会社	other	1.3M	¥3,558	-11.5%	¥2.9B ($18.6M)
2026-07-07	SELL	unknown	みずほ証券株式会社	other	1.9M	¥3,558	+11.5%	¥721M ($4.7M)
2026-06-05	BUY	unknown	アセットマネジメントOne株式会社	other	1.4M	¥3,861	-8.2%	¥5.3B ($34.1M)
2026-06-05	BUY	unknown	みずほ信託銀行株式会社	other	524.9K	¥3,861	-8.2%	¥2.0B ($13.1M)
2026-06-05	BUY	unknown	みずほ証券株式会社	other	2.1M	¥3,861	-8.2%	¥8.0B ($51.8M)
2026-04-07	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	19.5K	¥4,135	+5.6%	¥2.8B ($18.1M)
2026-04-07	SELL	unknown	野村アセットマネジメント株式会社	other	2.2M	¥4,135	+5.6%	¥290M ($1.9M)
2026-04-07	SELL	unknown	野村證券株式会社	other	872.6K	¥4,135	+5.6%	¥871M ($5.6M)
2026-03-02	BUY	acquisition	三井不動産株式会社 Mitsui Fudosan Co., Ltd.	strategic	5.4M	¥3,819	+5.5%	¥20.6B ($132.6M)
2026-02-20	SELL	unknown	野村アセットマネジメント株式会社	other	2.1M	¥3,464	-16.3%	¥8.6B ($55.5M)
2026-02-20	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	663.9K	¥3,464	+16.3%	¥2.7B ($17.3M)
2026-02-20	SELL	unknown	野村證券株式会社	other	1.0M	¥3,464	-16.3%	¥4.2B ($27.1M)
2025-12-22	SELL	Market Buy	大樹生命保険株式会社	passive	4.7M	¥3,768	-6.9%	¥19.0B ($122.4M)
2025-12-22	BUY	Market Buy	日本生命保険相互会社	passive	79.5K	¥3,768	-6.9%	¥320M ($2.1M)
2025-11-21	SELL	Market Buy	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	2.1M	¥3,981	-1.2%	¥30M ($193K)
2025-11-21	SELL	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	863.5K	¥3,981	-1.2%	¥3.3B ($21.0M)
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	2.2M	¥4,265	-5.5%	¥32M ($206K)
2025-10-06	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	112.7K	¥4,265	+5.5%	¥4.0B ($25.8M)
2025-10-06	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	2.1M	¥4,265	-5.5%	¥4.3B ($28.1M)
2025-09-22	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.2M	¥4,175	+3.5%	¥532M ($3.4M)
2025-09-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.0M	¥4,175	+3.5%	¥2.9B ($18.8M)
2025-09-22	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.1M	¥4,175	-3.5%	¥63M ($404K)
2025-09-19	SELL	negotiated	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	941.0K	¥4,280	+5.9%	¥193M ($1.2M)
2025-09-19	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	1.6M	¥4,280	-5.9%	¥96M ($621K)
2025-09-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.3M	¥4,280	-5.9%	¥5.6B ($36.2M)
2025-09-12	BUY	Market Buy	3Dインベストメント・パートナーズ・プライベート・リミティッド(3D Investment Partners Pte. Ltd.) 3D Investment Partners Pte. Ltd.	activist	8.4M	¥4,240	-5.0%	¥3.2B ($20.7M)
2025-08-18	BUY	Market Buy	3Dインベストメント・パートナーズ・プライベート・リミティッド(3D Investment Partners Pte. Ltd.) 3D Investment Partners Pte. Ltd.	activist	7.6M	¥4,210	-4.3%	¥3.2B ($20.4M)
2025-07-30	BUY	Market Buy	3Dインベストメント・パートナーズ・プライベート・リミティッド(3D Investment Partners Pte. Ltd.) 3D Investment Partners Pte. Ltd.	activist	6.9M	¥3,860	+4.4%	¥2.9B ($18.9M)
2025-07-23	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	2.4M	¥3,745	-7.6%	¥449M ($2.9M)
2025-07-23	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	1.7M	¥3,745	+7.6%	¥2.9B ($18.8M)
2025-07-23	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.1M	¥3,745	+7.6%	¥4.1B ($26.7M)
2025-07-09	BUY	Market Buy	3Dインベストメント・パートナーズ・プライベート・リミティッド(3D Investment Partners Pte. Ltd.) 3D Investment Partners Pte. Ltd.	activist	6.1M	¥3,805	+5.9%	¥2.9B ($18.6M)
2025-06-05	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	2.5M	¥4,025	-0.1%	¥181M ($1.2M)
2025-06-05	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	968.0K	¥4,025	+0.1%	¥1.5B ($9.9M)
2025-06-05	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.1M	¥4,025	-0.1%	¥362M ($2.3M)
2025-06-03	BUY	Market Buy	3Dインベストメント・パートナーズ・プライベート・リミティッド(3D Investment Partners Pte. Ltd.) 3D Investment Partners Pte. Ltd.	activist	5.3M	¥3,935	+2.4%	¥3.0B ($19.2M)
2025-05-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.5M	¥3,615	+11.4%	¥1.6B ($10.1M)
2025-05-22	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.2M	¥3,615	-11.4%	¥1.3B ($8.6M)
2025-05-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	587.0K	¥3,615	-11.4%	¥677M ($4.4M)
2025-05-21	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.3M	¥3,595	+12.1%	¥4.7B ($30.4M)
2025-05-21	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	979.1K	¥3,595	+12.1%	¥27M ($174K)
2025-05-21	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	1.6M	¥3,595	-12.1%	¥27M ($174K)
2025-05-19	BUY	Market Buy	3Dインベストメント・パートナーズ・プライベート・リミティッド(3D Investment Partners Pte. Ltd.) 3D Investment Partners Pte. Ltd.	activist	4.6M	¥3,545	+13.7%	¥2.8B ($17.8M)
2025-05-09	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	2.1M	¥3,465	-16.3%	¥78M ($503K)
2025-05-09	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	773.4K	¥3,465	-16.3%	¥2.3B ($15.1M)
2025-05-09	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.6M	¥3,465	+16.3%	¥2.6B ($16.9M)

Showing the 50 most recent of 91 filings.

Frequently asked questions

Who has been buying MITSUI-SOKO HOLDINGS Co., Ltd. stock?: 17 distinct investors have filed 39 disclosed large-shareholding filings in MITSUI-SOKO HOLDINGS Co., Ltd. (9302), most recently on 2026-04-07. 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 MITSUI-SOKO HOLDINGS Co., Ltd. have?: MITSUI-SOKO HOLDINGS Co., Ltd. has 39 buy-side and 33 sell-side disclosures on record, covering ¥48.8B ($314.9M) in total reported value, spanning 2021-06-04 to 2026-04-07.
Where does StockDrifts get MITSUI-SOKO HOLDINGS 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 MITSUI-SOKO HOLDINGS Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.