Who has been buying Sumitomo Mitsui Financial Group, Inc. stock?

23 distinct investors have filed 16 disclosed large-shareholding filings in Sumitomo Mitsui Financial Group, Inc. (8316), most recently on 2025-09-19. 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 Sumitomo Mitsui Financial Group, Inc. have?

Sumitomo Mitsui Financial Group, Inc. has 16 buy-side and 9 sell-side disclosures on record, covering ¥137.8B ($889.1M) in total reported value, spanning 2021-04-05 to 2025-09-19.

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.

Sumitomo Mitsui Financial Group, Inc. 8316

Company

株式会社三井住友フィナンシャルグループSumitomo Mitsui Financial Group, Inc.

Investors

Buys

Total Value

¥137.8B ($889.1M)

Avg Return

+245.85%

Last Filing

2025-09-19

Sumitomo Mitsui Financial Group, Inc. (8316) has 16 disclosed large-shareholding filings and 9 disclosed disposals on record, filed by 23 distinct investors. Together those filings cover ¥137.8B ($889.1M) in reported transaction value. The earliest filing StockDrifts holds for Sumitomo Mitsui Financial Group, Inc. is dated 2021-04-05; the most recent is 2025-09-19. Across these filings the average return since disclosure is +245.85%, 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
2025-09-19	BUY	unknown	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	80.0M	¥4,147	+64.7%	¥27.2B ($175.4M)
2025-09-19	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	126.7M	¥4,147	-64.7%	¥57.6B ($371.5M)
2024-02-02	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	29.2M	¥2,540	+168.9%	¥27.5B ($177.5M)
2024-02-02	BUY	Market Buy	アペリオ・グループ・エルエルシー(Aperio Group Aperio Group, LLC	passive	1.6M	¥2,540	-	-
2024-02-02	BUY	Market Buy	ブラックロック・アドバイザーズ・エルエルシー(BlackRock Advisers BlackRock Advisers, LLC	passive	1.6M	¥2,540	-	¥4.1B ($26.7M)
2024-02-02	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	1.8M	¥2,540	+168.9%	¥1.4B ($8.8M)
2024-02-02	BUY	Market Buy	ブラックロック・インベストメント・マネジメント・エルエルシー BlackRock Investment Management LLC	passive	1.6M	¥2,540	+168.9%	¥340M ($2.2M)
2024-02-02	BUY	Market Buy	ブラックロック・インベストメント・マネジメント (オーストラリア)リミテッドLimited) BlackRock Investment Management (Australia	passive	1.3M	¥2,540	-	¥3.4B ($22.0M)
2024-02-02	SELL	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	2.7M	¥2,540	-168.9%	¥679M ($4.4M)
2024-02-02	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	3.4M	¥2,540	+168.9%	¥1.4B ($8.8M)
2024-02-02	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	1.5M	¥2,540	-	-
2024-02-02	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	10.5M	¥2,540	+168.9%	¥4.4B ($28.5M)
2024-02-02	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	24.8M	¥2,540	+168.9%	¥6.1B ($39.5M)
2024-02-02	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	18.9M	¥2,540	-168.9%	¥7.5B ($48.2M)
2024-02-02	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	1.9M	¥2,540	-168.9%	¥340M ($2.2M)
2021-11-19	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	18.9M	¥1,295.67	+427.1%	¥2.0B ($12.6M)
2021-11-19	BUY	Market Buy	アペリオ・グループ・エルエルシー(Aperio Group Aperio Group, LLC	passive	1.6M	¥1,295.67	-	¥2.1B ($13.3M)
2021-11-19	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	1.4M	¥1,295.67	-	¥1.8B ($11.6M)
2021-11-19	BUY	Market Buy	ブラックロック・インベストメント・マネジメント・エルエルシー BlackRock Investment Management LLC	passive	1.4M	¥1,295.67	-	-
2021-11-19	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	3.0M	¥1,295.67	-	¥3.9B ($25.4M)
2021-11-19	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	2.8M	¥1,295.67	+427.1%	¥1.1B ($6.9M)
2021-11-19	BUY	Market Buy	ブラックロック・ライフ・リミテッド BlackRock Life Limited	passive	872.7K	¥1,295.67	+427.1%	¥104.9B ($676.7M)
2021-11-19	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	1.6M	¥1,295.67	-	¥2.0B ($13.0M)
2021-11-19	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	8.9M	¥1,295.67	+427.1%	¥3.9B ($25.3M)
2021-11-19	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	23.1M	¥1,295.67	+427.1%	¥7.3B ($47.1M)
2021-11-19	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	22.4M	¥1,295.67	-	-
2021-11-19	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	2.1M	¥1,295.67	-427.1%	¥3.0B ($19.5M)
2021-11-08	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.1M	¥1,283	-432.4%	¥2.1B ($13.7M)
2021-11-08	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	51.8M	¥1,283	+432.4%	¥65.7B ($423.6M)
2021-11-08	SELL	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	650.6K	¥1,283	-432.4%	¥882M ($5.7M)
2021-06-07	SELL	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	41.6M	¥1,336	-411.2%	¥3.5B ($22.5M)
2021-06-07	BUY	Market Buy	MUFGセキュリティーズEMEA MUFG Securities EMEA plc	other	1.5M	¥1,336	-	¥2.0B ($12.9M)
2021-06-07	BUY	Market Buy	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	10.9M	¥1,336	-	-
2021-06-07	SELL	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	1.3M	¥1,336	-411.2%	¥16.9B ($109.0M)
2021-04-05	BUY	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	44.3M	¥1,117.708	-	¥49.5B ($319.3M)
2021-04-05	BUY	Market Buy	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	10.8M	¥1,117.708	-	¥12.1B ($78.1M)
2021-04-05	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	13.8M	¥1,117.708	-	¥15.5B ($99.9M)

Frequently asked questions

Who has been buying Sumitomo Mitsui Financial Group, Inc. stock?: 23 distinct investors have filed 16 disclosed large-shareholding filings in Sumitomo Mitsui Financial Group, Inc. (8316), most recently on 2025-09-19. 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 Sumitomo Mitsui Financial Group, Inc. have?: Sumitomo Mitsui Financial Group, Inc. has 16 buy-side and 9 sell-side disclosures on record, covering ¥137.8B ($889.1M) in total reported value, spanning 2021-04-05 to 2025-09-19.
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.