Who has been buying Daiichi Sankyo Company, Limited stock?

30 distinct investors have filed 39 disclosed large-shareholding filings in Daiichi Sankyo Company, Limited (4568), most recently on 2026-02-06. 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 Daiichi Sankyo Company, Limited have?

Daiichi Sankyo Company, Limited has 39 buy-side and 33 sell-side disclosures on record, covering ¥1.49T ($9.6B) in total reported value, spanning 2021-04-21 to 2026-02-06.

Where does StockDrifts get Daiichi Sankyo Company, Limited 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.

Daiichi Sankyo Company, Limited 4568

Company

第一三共株式会社Daiichi Sankyo Company, Limited

Investors

Buys

Total Value

¥1.49T ($9.6B)

Avg Return

-14.16%

Last Filing

2026-02-06

Daiichi Sankyo Company, Limited (4568) has 39 disclosed large-shareholding filings and 33 disclosed disposals on record, filed by 30 distinct investors. Together those filings cover ¥1.49T ($9.6B) in reported transaction value. The earliest filing StockDrifts holds for Daiichi Sankyo Company, Limited is dated 2021-04-21; the most recent is 2026-02-06. 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 -14.16%, 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
2026-02-06	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	72.6M	¥2,869	-4.6%	¥106.0B ($683.7M)
2026-01-22	BUY	Market Buy	キャピタル・インターナショナル・インク(Capital International	passive	4.3M	¥3,139	+4.4%	¥12.8B ($82.8M)
2026-01-22	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー Capital Research and Management Company	passive	105.1M	¥3,139	+4.4%	¥315.4B ($2.0B)
2025-12-22	BUY	Market Buy	ニッセイアセットマネジメント株式会社	other	3.3M	¥3,285	-8.7%	¥10.0B ($64.5M)
2025-12-22	SELL	Market Buy	日本生命保険相互会社	passive	80.8M	¥3,285	+8.7%	¥242.3B ($1.6B)
2025-10-22	BUY	Market Buy	キャピタル・インターナショナル・インク(Capital International Capital International, Inc.	passive	4.3M	¥4,087	-26.6%	¥1.5B ($10.0M)
2025-10-22	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー Capital Research and Management Company	passive	130.9M	¥4,087	-26.6%	¥149.4B ($964.0M)
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	44.0M	¥3,543	-15.3%	¥24.8B ($160.2M)
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	57.5M	¥3,543	+15.3%	¥11.4B ($73.6M)
2025-09-05	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	56.1M	¥3,621	+17.1%	¥686M ($4.4M)
2025-09-05	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	70	¥3,621	+17.1%	¥30.9B ($199.1M)
2025-09-05	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	5.4M	¥3,621	-17.1%	¥19.7B ($127.2M)
2025-09-05	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	unknown	0	¥3,621	+17.1%	¥90.5B ($584.2M)
2025-08-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	56.3M	¥3,600	-16.7%	¥202.7B ($1.3B)
2025-08-07	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	8.5M	¥3,600	-16.7%	¥30.5B ($197.1M)
2025-08-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	5.5M	¥3,600	-16.7%	¥19.8B ($127.9M)
2025-08-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	25.0M	¥3,600	-16.7%	¥90.1B ($581.0M)
2025-05-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	57.6M	¥3,753	+20.1%	¥13.6B ($87.8M)
2025-05-22	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	strategic	8.5M	¥3,753	-20.1%	¥31.8B ($205.5M)
2025-05-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	3.6M	¥3,753	+20.1%	¥8.6B ($55.4M)
2025-05-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	25.0M	¥3,753	-20.1%	¥93.9B ($605.7M)
2025-05-09	SELL	Market Buy	キャピタル・インターナショナル株式会社 Capital International Co., Ltd.	unknown	0	¥3,547	+15.4%	¥8.8B ($56.8M)
2025-05-09	SELL	Market Buy	キャピタル・インターナショナル・インク(Capital International Capital International, Inc.	passive	4.0M	¥3,547	+15.4%	¥677M ($4.4M)
2025-05-09	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー Capital Research and Management Company	passive	95.0M	¥3,547	+15.4%	¥83.9B ($541.5M)
2025-02-21	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	61.2M	¥3,429	-12.5%	¥22.9B ($147.8M)
2025-02-21	SELL	Market Buy	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	strategic	8.5M	¥3,429	+12.5%	¥21.6B ($139.3M)
2025-02-21	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	5.9M	¥3,429	-12.5%	¥5.2B ($33.8M)
2025-02-21	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	25.0M	¥3,429	-12.5%	¥2.0B ($12.7M)
2024-12-20	BUY	Market Buy	キャピタル・インターナショナル・インク(Capital International Capital International, Inc.	passive	4.3M	¥4,382	-31.5%	¥853M ($5.5M)
2024-12-20	SELL	Market Buy	キャピタル・インターナショナル株式会社 Capital International Co., Ltd.	passive	2.6M	¥4,382	+31.5%	¥27.3B ($176.1M)
2024-12-20	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー Capital Research and Management Company	passive	121.1M	¥4,382	+31.5%	¥75.1B ($484.4M)
2024-10-18	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	2.9M	¥4,978	+39.7%	¥7.8B ($50.0M)
2024-10-18	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	23.4M	¥4,978	+39.7%	¥5.8B ($37.5M)
2024-10-18	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	36.6M	¥4,978	-39.7%	¥41.7B ($268.9M)
2024-10-18	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	15.3M	¥4,978	-39.7%	¥15.5B ($100.0M)
2024-10-18	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	2.1M	¥4,978	-39.7%	¥10.3B ($66.6M)
2024-10-18	SELL	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	4.3M	¥4,978	+39.7%	¥3.9B ($25.0M)
2024-10-18	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	6.6M	¥4,978	-39.7%	¥9.7B ($62.5M)
2024-10-18	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	6.9M	¥4,978	-39.7%	¥6.8B ($43.8M)
2024-10-18	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	2.3M	¥4,978	-39.7%	¥11.3B ($72.7M)
2024-10-18	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	1.6M	¥4,978	+39.7%	¥1.9B ($12.5M)
2024-10-18	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	2.0M	¥4,978	-39.7%	¥9.8B ($62.9M)
2024-10-18	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	2.8M	¥4,978	+39.7%	¥9.7B ($62.5M)
2024-10-18	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	38.9M	¥4,978	-39.7%	¥42.6B ($275.1M)
2024-03-25	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	4.5M	¥4,822	-37.8%	¥1.9B ($12.1M)
2024-03-25	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	25.0M	¥4,822	+37.8%	¥64.8B ($417.9M)
2024-03-25	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	55.6M	¥4,822	+37.8%	¥31.9B ($205.9M)
2024-03-25	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	strategic	15.0M	¥4,822	-37.8%	¥72.3B ($466.2M)
2023-01-30	SELL	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	63.6M	¥4,274	+29.8%	¥21.6B ($139.6M)
2023-01-30	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	2.4M	¥4,274	+29.8%	¥24.1B ($155.7M)

Showing the 50 most recent of 86 filings.

Frequently asked questions

Who has been buying Daiichi Sankyo Company, Limited stock?: 30 distinct investors have filed 39 disclosed large-shareholding filings in Daiichi Sankyo Company, Limited (4568), most recently on 2026-02-06. 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 Daiichi Sankyo Company, Limited have?: Daiichi Sankyo Company, Limited has 39 buy-side and 33 sell-side disclosures on record, covering ¥1.49T ($9.6B) in total reported value, spanning 2021-04-21 to 2026-02-06.
Where does StockDrifts get Daiichi Sankyo Company, Limited 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 Daiichi Sankyo Company, Limited. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.