Who has been buying Sony Financial Group Inc. stock?

11 distinct investors have filed 12 disclosed large-shareholding filings in Sony Financial Group Inc. (8729), most recently on 2025-10-03. 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 Sony Financial Group Inc. have?

Sony Financial Group Inc. has 12 buy-side and 0 sell-side disclosures on record, covering ¥193.7B ($1.2B) in total reported value, spanning 2025-10-01 to 2025-10-03.

Where does StockDrifts get Sony Financial Group Inc. 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.

Sony Financial Group Inc. 8729

Company

ソニーフィナンシャルグループ株式会社Sony Financial Group Inc.

Investors

Buys

Total Value

¥193.7B ($1.2B)

Avg Return

-0.39%

Last Filing

2025-10-03

Sony Financial Group Inc. (8729) has 12 disclosed large-shareholding filings and 0 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥193.7B ($1.2B) in reported transaction value. The earliest filing StockDrifts holds for Sony Financial Group Inc. is dated 2025-10-01; the most recent is 2025-10-03. 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 -0.39%, 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
2026-06-05	SELL	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	7.4M	¥140.3	-4.6%	¥1.8B ($11.6M)
2026-06-05	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	4.2M	¥140.3	-4.6%	¥665M ($4.3M)
2026-06-05	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, N.A.	passive	58.0M	¥140.3	-4.6%	¥3.3B ($21.4M)
2026-06-05	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	80.1M	¥140.3	-4.6%	¥4.4B ($28.2M)
2026-06-05	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	13.9M	¥140.3	-4.6%	¥4.5B ($28.8M)
2026-06-05	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	4.4M	¥140.3	-4.6%	¥570M ($3.7M)
2026-06-05	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	17.3M	¥140.3	-4.6%	¥570M ($3.7M)
2026-06-05	SELL	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, Inc.	passive	2.5M	¥140.3	-4.6%	¥665M ($4.3M)
2026-06-05	SELL	Market Buy	ブラックロック・アドバイザーズ・エルエルシー BlackRock Advisers, LLC	passive	0	¥140.3	-4.6%	¥1.1B ($7.4M)
2026-06-05	SELL	Market Buy	ブラックロック・ジャパン株式会社	passive	108.2M	¥140.3	-4.6%	¥1.4B ($9.2M)
2025-10-03	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	7.5M	¥145.3	+1.1%	¥1.1B ($7.0M)
2025-10-03	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	48.8M	¥145.3	+1.1%	¥7.1B ($45.7M)
2025-10-03	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	125.0M	¥145.3	+1.1%	¥18.2B ($117.1M)
2025-10-03	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	9.3M	¥145.3	+1.1%	¥1.3B ($8.7M)
2025-10-03	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	86.2M	¥145.3	+1.1%	¥12.5B ($80.8M)
2025-10-03	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	117.3M	¥145.3	+1.1%	¥17.0B ($109.9M)
2025-10-03	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	9.3M	¥145.3	+1.1%	¥1.4B ($8.8M)
2025-10-03	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	23.2M	¥145.3	+1.1%	¥3.4B ($21.8M)
2025-10-03	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	21.3M	¥145.3	+1.1%	¥3.1B ($19.9M)
2025-10-03	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	8.7M	¥145.3	+1.1%	¥1.3B ($8.1M)
2025-10-01	BUY	Market Buy	ソニーグループ株式会社 Sony Group Corporation	corporate	1172.2M	¥159.4	-7.8%	¥175.5B ($1.1B)
2025-10-01	BUY	Market Buy	ソニーグループ株式会社 Sony Group Corporation	activist	7149.4M	¥159.4	-7.8%	¥1.1T ($7.4B)

Frequently asked questions

Who has been buying Sony Financial Group Inc. stock?: 11 distinct investors have filed 12 disclosed large-shareholding filings in Sony Financial Group Inc. (8729), most recently on 2025-10-03. 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 Sony Financial Group Inc. have?: Sony Financial Group Inc. has 12 buy-side and 0 sell-side disclosures on record, covering ¥193.7B ($1.2B) in total reported value, spanning 2025-10-01 to 2025-10-03.
Where does StockDrifts get Sony Financial Group Inc. 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 Sony Financial Group Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.