Who has been buying Mitsuba Corporation stock?

10 distinct investors have filed 12 disclosed large-shareholding filings in Mitsuba Corporation (7280), most recently on 2026-05-13. 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 Mitsuba Corporation have?

Mitsuba Corporation has 12 buy-side and 2 sell-side disclosures on record, covering ¥14.9B ($96.3M) in total reported value, spanning 2022-07-19 to 2026-05-13.

Where does StockDrifts get Mitsuba Corporation 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.

Mitsuba Corporation 7280

Company

株式会社ミツバMitsuba Corporation

Investors

Buys

Total Value

¥14.9B ($96.3M)

Avg Return

+84.06%

Last Filing

2026-05-13

Mitsuba Corporation (7280) has 12 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥14.9B ($96.3M) in reported transaction value. The earliest filing StockDrifts holds for Mitsuba Corporation is dated 2022-07-19; the most recent is 2026-05-13. 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 +84.06%, 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
2026-08-07	BUY	unknown	野村アセットマネジメント株式会社	other	1.3M	¥1,183	+6.2%	¥1.5B ($9.8M)
2026-08-07	BUY	unknown	野村證券株式会社	other	761.9K	¥1,183	+6.2%	¥901M ($5.8M)
2026-08-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	356.3K	¥1,183	+6.2%	¥421M ($2.7M)
2026-08-04	SELL	Market Buy	株式会社横浜銀行	passive	5.3M	¥1,192	-5.4%	¥2.3B ($14.6M)
2026-08-04	SELL	subscription	株式会社日本政策投資銀行	passive	3.1M	¥1,192	-5.4%	¥2.5B ($16.1M)
2026-05-13	BUY	Market Buy	株式会社横浜銀行	passive	8.3M	¥1,174	+2.8%	¥9.8B ($63.2M)
2026-05-13	BUY	subscription	株式会社日本政策投資銀行	passive	6.1M	¥1,174	+2.8%	¥7.2B ($46.5M)
2026-02-20	BUY	unknown	野村アセットマネジメント株式会社	other	1.2M	¥1,390	-13.7%	¥1.4B ($9.3M)
2026-02-20	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	814.8K	¥1,390	+13.7%	¥978M ($6.3M)
2026-02-20	SELL	unknown	野村證券株式会社	other	3.5K	¥1,390	+13.7%	¥4M ($27K)
2026-02-05	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	2.9M	¥1,416	-15.3%	¥4.1B ($26.7M)
2023-05-09	BUY	negotiated	株式会社神奈川銀行 Kanagawa Bank, Ltd.	strategic	157.0K	¥604	+98.7%	¥95M ($612K)
2023-05-09	BUY	negotiated	浜銀ファイナンス株式会社 Hamagin Finance Co., Ltd.	strategic	503.1K	¥604	+98.7%	¥304M ($2.0M)
2023-05-09	BUY	negotiated	株式会社神奈川銀行 Kanagawa Bank, Ltd.	strategic	157.0K	¥604	+98.7%	¥95M ($612K)
2023-05-09	BUY	negotiated	株式会社横浜銀行 The Bank of Yokohama. Ltd	strategic	2.2M	¥604	+98.7%	¥1.3B ($8.6M)
2023-05-09	BUY	negotiated	株式会社横浜銀行 The Bank of Yokohama. Ltd	strategic	2.2M	¥604	+98.7%	¥1.3B ($8.6M)
2022-07-19	BUY	Market Buy	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	20.0K	¥426	+181.7%	¥715M ($4.6M)
2022-07-19	BUY	Market Buy	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	231.0K	¥426	+181.7%	¥51M ($326K)
2022-07-19	BUY	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.6M	¥426	+181.7%	¥675M ($4.4M)

Frequently asked questions

Who has been buying Mitsuba Corporation stock?: 10 distinct investors have filed 12 disclosed large-shareholding filings in Mitsuba Corporation (7280), most recently on 2026-05-13. 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 Mitsuba Corporation have?: Mitsuba Corporation has 12 buy-side and 2 sell-side disclosures on record, covering ¥14.9B ($96.3M) in total reported value, spanning 2022-07-19 to 2026-05-13.
Where does StockDrifts get Mitsuba Corporation 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 Mitsuba Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.