Who has been buying Brother Industries, Ltd. stock?

22 distinct investors have filed 38 disclosed large-shareholding filings in Brother Industries, Ltd. (6448), most recently on 2026-03-30. 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 Brother Industries, Ltd. have?

Brother Industries, Ltd. has 38 buy-side and 19 sell-side disclosures on record, covering ¥167.3B ($1.1B) in total reported value, spanning 2021-05-12 to 2026-03-30.

Where does StockDrifts get Brother Industries, 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.

Brother Industries, Ltd. 6448

Company

ブラザー工業株式会社Brother Industries, Ltd.

Investors

Buys

Total Value

¥167.3B ($1.1B)

Avg Return

+20.08%

Last Filing

2026-03-30

Brother Industries, Ltd. (6448) has 38 disclosed large-shareholding filings and 19 disclosed disposals on record, filed by 22 distinct investors. Together those filings cover ¥167.3B ($1.1B) in reported transaction value. The earliest filing StockDrifts holds for Brother Industries, Ltd. is dated 2021-05-12; the most recent is 2026-03-30. 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 +20.08%, 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
2026-03-30	BUY	negotiated	三菱UFJアセットマネジメント株式会社	passive	2.4M	¥2,866.5	+3.3%	¥6.9B ($44.8M)
2026-03-30	BUY	negotiated	MUFGセキュリティーズEMEA MUFG Securities EMEA plc	other	1.0M	¥2,866.5	+3.3%	¥2.9B ($18.5M)
2026-03-30	BUY	negotiated	三菱UFJ信託銀行株式会社	passive	6.0M	¥2,866.5	+3.3%	¥17.1B ($110.5M)
2026-03-30	BUY	negotiated	株式会社三菱UFJ銀行	strategic	3.4M	¥2,866.5	+3.3%	¥9.7B ($62.4M)
2026-03-30	BUY	negotiated	ファースト・センティア・インベスターズ・アールキューアイ・ピーティーワイ・リミテッド First Sentier Investors RQI Pty Ltd	passive	260.4K	¥2,866.5	+3.3%	¥746M ($4.8M)
2026-03-30	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社	other	412.3K	¥2,866.5	+3.3%	¥1.2B ($7.6M)
2025-11-17	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	2.4M	¥3,008	-2.5%	¥853M ($5.5M)
2025-11-17	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	6.5M	¥3,008	-2.5%	¥6.9B ($44.5M)
2025-11-17	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	3.4M	¥3,008	-2.5%	¥853M ($5.5M)
2025-05-20	BUY	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	311.7K	¥2,411	+27.9%	¥752M ($4.8M)
2025-05-20	BUY	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 BlackRock Institutional Trust Company, N.A.	passive	2.4M	¥2,411	+27.9%	¥5.8B ($37.6M)
2025-05-20	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	487.9K	¥2,411	+27.9%	¥1.2B ($7.6M)
2025-05-20	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	5.3M	¥2,411	+27.9%	¥12.8B ($82.3M)
2025-05-20	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	2.9M	¥2,411	+27.9%	¥7.0B ($44.9M)
2025-05-20	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	512.7K	¥2,411	+27.9%	¥1.2B ($8.0M)
2025-05-20	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	751.5K	¥2,411	+27.9%	¥1.8B ($11.7M)
2025-05-20	BUY	Market Buy	ブラックロック・フィナンシャル・マネジメント・インク(BlackRock Financial Management BlackRock Financial Management, Inc.	passive	390.4K	¥2,411	+27.9%	¥941M ($6.1M)
2025-03-06	SELL	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	446.6K	¥2,799	-10.2%	¥361M ($2.3M)
2025-03-06	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	118.4K	¥2,799	-10.2%	¥649M ($4.2M)
2025-03-06	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 BlackRock Institutional Trust Company, N.A.	passive	2.3M	¥2,799	-10.2%	¥3.6B ($23.3M)
2025-03-06	SELL	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	3.0M	¥2,799	-10.2%	¥5.5B ($35.4M)
2025-03-06	SELL	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	4.9M	¥2,799	-10.2%	¥1.7B ($11.2M)
2025-03-06	SELL	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	613.2K	¥2,799	-10.2%	¥5.9B ($38.2M)
2025-03-06	SELL	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	732.9K	¥2,799	-10.2%	¥72M ($465K)
2024-07-29	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	110.5K	¥3,073	+0.3%	¥30.7B ($197.8M)
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	2.7M	¥3,073	+0.3%	¥2.0B ($12.8M)
2024-07-29	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	8.8M	¥3,073	+0.3%	¥27.0B ($173.9M)
2024-07-29	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	3.7M	¥3,073	-0.3%	¥1.2B ($7.7M)
2024-06-06	BUY	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	368.7K	¥2,953.5	+4.4%	¥76M ($491K)
2024-06-06	BUY	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 BlackRock Institutional Trust Company, N.A.	passive	3.6M	¥2,953.5	+4.4%	¥685M ($4.4M)
2024-06-06	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	5.0M	¥2,953.5	+4.4%	¥3.3B ($21.6M)
2024-06-06	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	2.7M	¥2,953.5	+4.4%	¥2.7B ($17.7M)
2024-06-06	SELL	Market Buy	ブラックロック・アセット・マネジメント・カナダ・リミテッド BlackRock Asset Management Canada Limited	passive	202.4K	¥2,953.5	-4.4%	¥305M ($2.0M)
2024-06-06	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	738.8K	¥2,953.5	+4.4%	¥457M ($2.9M)
2024-06-06	SELL	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	574.6K	¥2,953.5	-4.4%	¥457M ($2.9M)
2024-06-06	BUY	Market Buy	アペリオ・グループ・エルエルシー(Aperio Group Aperio Group, LLC	passive	180.3K	¥2,953.5	+4.4%	¥52.5B ($338.9M)
2024-06-06	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	5.6M	¥2,953.5	+4.4%	¥2.8B ($18.2M)
2023-12-06	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	4.2M	¥2,545	+21.1%	¥853M ($5.5M)
2023-12-06	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	8.4M	¥2,545	-21.1%	¥2.0B ($12.7M)
2023-12-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	111.8K	¥2,545	+21.1%	¥25.1B ($161.7M)
2023-02-20	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	325.1K	¥2,011	+53.3%	¥654M ($4.2M)
2023-02-20	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	2.1M	¥2,011	+53.3%	¥2.2B ($14.4M)
2023-02-20	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	8.8M	¥2,011	-53.3%	¥5.2B ($33.8M)
2023-02-20	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	4.0M	¥2,011	-53.3%	¥1.3B ($8.7M)
2022-10-20	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	339.5K	¥2,588	-19.1%	¥600M ($3.9M)
2022-10-20	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 BlackRock Institutional Trust Company, N.A.	passive	3.4M	¥2,588	-19.1%	¥467M ($3.0M)
2022-10-20	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	3.9M	¥2,588	+19.1%	¥1.8B ($11.6M)
2022-10-20	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	1.8M	¥2,588	+19.1%	¥2.1B ($13.3M)
2022-10-20	BUY	Market Buy	ブラックロック・アセット・マネジメント・カナダ・リミテッド BlackRock Asset Management Canada Limited	passive	298.5K	¥2,588	+19.1%	¥773M ($5.0M)
2022-10-20	BUY	Market Buy	ブラックロック・ライフ・リミテッド BlackRock Life Limited	passive	151.8K	¥2,588	+19.1%	¥38.9B ($250.9M)

Showing the 50 most recent of 67 filings.

Frequently asked questions

Who has been buying Brother Industries, Ltd. stock?: 22 distinct investors have filed 38 disclosed large-shareholding filings in Brother Industries, Ltd. (6448), most recently on 2026-03-30. 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 Brother Industries, Ltd. have?: Brother Industries, Ltd. has 38 buy-side and 19 sell-side disclosures on record, covering ¥167.3B ($1.1B) in total reported value, spanning 2021-05-12 to 2026-03-30.
Where does StockDrifts get Brother Industries, 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 Brother Industries, Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.