Who has been buying Tokio Marine Holdings, Inc. stock?

21 distinct investors have filed 18 disclosed large-shareholding filings in Tokio Marine Holdings, Inc. (8766), most recently on 2026-01-05. 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 Tokio Marine Holdings, Inc. have?

Tokio Marine Holdings, Inc. has 18 buy-side and 11 sell-side disclosures on record, covering ¥532.9B ($3.4B) in total reported value, spanning 2021-07-26 to 2026-01-05.

Where does StockDrifts get Tokio Marine Holdings, 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.

Tokio Marine Holdings, Inc. 8766

Company

東京海上ホールディングス株式会社Tokio Marine Holdings, Inc.

Investors

Buys

Total Value

¥532.9B ($3.4B)

Avg Return

+59.61%

Last Filing

2026-01-05

Tokio Marine Holdings, Inc. (8766) has 18 disclosed large-shareholding filings and 11 disclosed disposals on record, filed by 21 distinct investors. Together those filings cover ¥532.9B ($3.4B) in reported transaction value. The earliest filing StockDrifts holds for Tokio Marine Holdings, Inc. is dated 2021-07-26; the most recent is 2026-01-05. 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 +59.61%, 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
2026-01-05	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社	other	2.4M	¥5,911	-21.4%	¥17.5B ($112.8M)
2026-01-05	BUY	negotiated	三菱UFJアセットマネジメント株式会社	passive	22.1M	¥5,911	+21.4%	¥158.6B ($1.0B)
2026-01-05	SELL	negotiated	三菱UFJ信託銀行株式会社	passive	45.5M	¥5,911	-21.4%	¥326.5B ($2.1B)
2026-01-05	BUY	negotiated	株式会社三菱UFJ銀行	strategic	23.5M	¥5,911	+21.4%	¥168.9B ($1.1B)
2025-09-19	BUY	Market Buy	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	38.9M	¥6,326	+13.4%	¥25.7B ($165.8M)
2025-09-19	SELL	Market Buy	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	59.6M	¥6,326	-13.4%	¥20.8B ($134.2M)
2024-10-07	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	5.7M	¥5,797	+23.8%	¥33.1B ($213.6M)
2024-10-07	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	20.5M	¥5,797	+23.8%	¥118.8B ($766.2M)
2024-10-07	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	50.6M	¥5,797	+23.8%	¥293.2B ($1.9B)
2024-10-07	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	23.5M	¥5,797	+23.8%	¥136.5B ($880.6M)
2024-07-29	BUY	Market Buy	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	23.5M	¥5,874	+22.1%	¥4.6B ($30.0M)
2024-07-29	BUY	Market Buy	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	21.0M	¥5,874	+22.1%	¥10.5B ($67.5M)
2024-07-29	BUY	Market Buy	MUFGセキュリティーズEMEA MUFG Securities EMEA plc	other	402.0K	¥5,874	+22.1%	¥209.1B ($1.3B)
2024-07-29	SELL	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	51.9M	¥5,874	-22.1%	¥54.6B ($352.3M)
2024-06-06	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	2.1M	¥5,425	-32.3%	¥17.2B ($110.8M)
2024-06-06	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	27.1M	¥5,425	-32.3%	¥24.7B ($159.2M)
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	38.8M	¥5,425	+32.3%	¥107.3B ($692.3M)
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	16.7M	¥5,425	+32.3%	¥42.9B ($276.9M)
2024-06-06	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	2.4M	¥5,425	+32.3%	¥12.9B ($83.1M)
2024-06-06	BUY	Market Buy	ブラックロック・ライフ・リミテッド BlackRock Life Limited	passive	605.1K	¥5,425	+32.3%	¥290.8B ($1.9B)
2024-06-06	BUY	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	635.5K	¥5,425	+32.3%	¥298.3B ($1.9B)
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	6.2M	¥5,425	+32.3%	¥33.6B ($216.6M)
2024-06-06	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	5.4M	¥5,425	+32.3%	¥29.1B ($187.8M)
2024-06-06	SELL	Market Buy	ブラックロック・インベストメント・マネジメント・エルエルシー BlackRock Investment Management LLC	passive	1.7M	¥5,425	-32.3%	¥15.0B ($96.9M)
2024-06-06	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 BlackRock Advisers, LLC	passive	1.8M	¥5,425	-32.3%	¥52.6B ($339.2M)
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	42.1M	¥5,425	+32.3%	¥70.8B ($456.9M)
2022-06-20	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	428.8K	¥2,456.33	-192.1%	¥8.5B ($55.0M)
2022-06-20	BUY	Market Buy	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	6.6M	¥2,456.33	+192.1%	¥5.2B ($33.4M)
2022-06-20	SELL	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	21.0M	¥2,456.33	-192.1%	¥19.0B ($122.8M)
2022-06-20	BUY	Market Buy	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	7.8M	¥2,456.33	+192.1%	¥1.7B ($10.8M)
2022-06-20	BUY	Market Buy	MUFGセキュリティーズEMEA MUFG Securities EMEA plc	other	1.4M	¥2,456.33	+192.1%	¥3.4B ($21.9M)
2021-07-26	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	27.7M	¥1,750.67	+309.8%	¥47.9B ($308.9M)
2021-07-26	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	294.6K	¥1,750.67	-309.8%	¥1.6B ($10.2M)

Frequently asked questions

Who has been buying Tokio Marine Holdings, Inc. stock?: 21 distinct investors have filed 18 disclosed large-shareholding filings in Tokio Marine Holdings, Inc. (8766), most recently on 2026-01-05. 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 Tokio Marine Holdings, Inc. have?: Tokio Marine Holdings, Inc. has 18 buy-side and 11 sell-side disclosures on record, covering ¥532.9B ($3.4B) in total reported value, spanning 2021-07-26 to 2026-01-05.
Where does StockDrifts get Tokio Marine Holdings, 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 Tokio Marine Holdings, Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.