Who has been buying MinebeaMitsumi Inc. stock?

21 distinct investors have filed 21 disclosed large-shareholding filings in MinebeaMitsumi Inc. (6479), most recently on 2025-12-18. 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 MinebeaMitsumi Inc. have?

MinebeaMitsumi Inc. has 21 buy-side and 22 sell-side disclosures on record, covering ¥158.6B ($1.0B) in total reported value, spanning 2021-10-07 to 2025-12-18.

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.

MinebeaMitsumi Inc. 6479

Company

ミネベアミツミ株式会社MinebeaMitsumi Inc.

Investors

Buys

Total Value

¥158.6B ($1.0B)

Avg Return

+10.15%

Last Filing

2025-12-18

MinebeaMitsumi Inc. (6479) has 21 disclosed large-shareholding filings and 22 disclosed disposals on record, filed by 21 distinct investors. Together those filings cover ¥158.6B ($1.0B) in reported transaction value. The earliest filing StockDrifts holds for MinebeaMitsumi Inc. is dated 2021-10-07; the most recent is 2025-12-18. Across these filings the average return since disclosure is +10.15%, 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	BUY	unknown	野村證券株式会社	other	2.4M	¥3,971	-	¥9.7B ($62.6M)
2026-07-23	BUY	Market Buy	野村アセットマネジメント株式会社	other	29.5M	¥3,971	-13.0%	¥7.8B ($50.3M)
2026-06-19	BUY	negotiated	三井住友信託銀行株式会社	strategic	15.4M	¥4,628	-	-
2026-06-19	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	9.5M	¥4,628	+25.4%	¥198M ($1.3M)
2026-06-19	SELL	unknown	アモーヴァ・アセットマネジメント株式会社	other	15.9M	¥4,628	+25.4%	¥593M ($3.8M)
2025-12-18	BUY	Market Buy	ブラックロック・ジャパン株式会社	passive	7.0M	¥3,101	+11.4%	¥1.1B ($6.8M)
2025-12-18	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	1.0M	¥3,101	-	¥3.2B ($20.3M)
2025-12-18	BUY	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	1.3M	¥3,101	-	¥4.1B ($26.6M)
2025-12-18	SELL	Market Buy	ブラックロック(ルクセンブルグ)エス・エーS.A.) BlackRock (Luxembourg	passive	36.7K	¥3,101	-11.4%	¥3.2B ($20.5M)
2025-12-18	SELL	Market Buy	ブラックロック・ライフ・リミテッド BlackRock Life Limited	passive	133.5K	¥3,101	-11.4%	¥2.1B ($13.7M)
2025-12-18	BUY	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	3.0M	¥3,101	+11.4%	¥5.3B ($34.2M)
2025-12-18	BUY	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	6.7M	¥3,101	+11.4%	¥7.4B ($47.8M)
2025-12-18	SELL	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company	passive	4.5M	¥3,101	-11.4%	¥5.2B ($33.3M)
2025-12-18	SELL	Market Buy	ブラックロック・インベストメント・マネジメント(ユーケー)リミテッドLimited) BlackRock Investment Management (UK	passive	661.3K	¥3,101	-11.4%	¥1.6B ($10.3M)
2025-09-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	15.4M	¥2,735	-	-
2025-09-19	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	9.5M	¥2,735	-26.3%	¥7.9B ($51.2M)
2025-09-19	BUY	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	16.0M	¥2,735	+26.3%	¥3.4B ($21.9M)
2025-06-05	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	27.6M	¥1,942.5	-77.9%	¥8.5B ($54.6M)
2024-07-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	10.2M	¥3,612	-	-
2024-07-29	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	7.9M	¥3,612	-4.3%	¥3.7B ($23.9M)
2024-07-29	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	5.5M	¥3,612	-4.3%	¥617M ($4.0M)
2024-06-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	15.4M	¥3,249	-	-
2024-06-06	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	12.4M	¥3,249	+6.3%	¥2.1B ($13.4M)
2024-06-06	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	14.7M	¥3,249	+6.3%	¥2.1B ($13.4M)
2024-04-05	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	31.9M	¥2,848.5	+21.3%	¥730M ($4.7M)
2024-02-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	15.4M	¥2,854	-	-
2024-02-06	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	11.7M	¥2,854	+21.1%	¥488M ($3.1M)
2024-02-06	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	14.1M	¥2,854	+21.1%	¥1.3B ($8.7M)
2023-12-07	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	51.6K	¥2,780.5	-	-
2023-12-07	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	454	¥2,780.5	-24.3%	¥7.6B ($49.0M)
2023-12-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	31.7M	¥2,780.5	+24.3%	¥5.9B ($38.3M)
2023-10-20	BUY	unknown	エフエムアールエルエルシー FMR LLC	other	21.1M	¥2,352	+46.9%	¥49.0B ($316.2M)
2023-10-20	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	50.3K	¥2,352	+46.9%	¥8.4B ($54.4M)
2023-10-20	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	29.5M	¥2,352	-46.9%	¥5.7B ($36.9M)
2023-10-20	BUY	unknown	ナショナルファイナンシャルサービスエルエルシー National Financial Services LLC	other	3.2K	¥2,352	-	-
2023-10-20	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	2.7M	¥2,352	-46.9%	¥2.0B ($13.0M)
2023-10-19	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	11.6M	¥2,389	-44.6%	¥4.5B ($29.0M)
2023-10-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	15.4M	¥2,389	-	-
2023-10-19	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	13.6M	¥2,389	-44.6%	¥204M ($1.3M)
2023-10-16	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	10.2M	¥2,451.5	-	-
2023-10-16	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	6.9M	¥2,451.5	-40.9%	¥314M ($2.0M)
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	5.3M	¥2,451.5	+40.9%	¥523M ($3.4M)
2023-10-16	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	262.8K	¥2,451.5	-40.9%	¥523M ($3.4M)
2023-10-06	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	703.7K	¥2,435	-41.9%	¥71.1B ($458.9M)
2023-10-06	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	3.6M	¥2,435	+41.9%	¥3.2B ($20.8M)
2023-10-06	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	31.9M	¥2,435	-41.9%	¥5.8B ($37.6M)
2023-09-08	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	15.4M	¥2,335	-	-
2023-09-08	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	¥2,335	-48.0%	¥10.2B ($65.6M)
2023-09-08	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	13.7M	¥2,335	-	-
2023-06-07	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	300.7K	¥2,699.5	-	¥812M ($5.2M)

Showing the 50 most recent of 67 filings.

Frequently asked questions

Who has been buying MinebeaMitsumi Inc. stock?: 21 distinct investors have filed 21 disclosed large-shareholding filings in MinebeaMitsumi Inc. (6479), most recently on 2025-12-18. 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 MinebeaMitsumi Inc. have?: MinebeaMitsumi Inc. has 21 buy-side and 22 sell-side disclosures on record, covering ¥158.6B ($1.0B) in total reported value, spanning 2021-10-07 to 2025-12-18.
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.