Who has been buying DKS Co. Ltd. stock?

9 distinct investors have filed 26 disclosed large-shareholding filings in DKS Co. Ltd. (4461), most recently on 2026-04-22. 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 DKS Co. Ltd. have?

DKS Co. Ltd. has 26 buy-side and 19 sell-side disclosures on record, covering ¥22.4B ($144.2M) in total reported value, spanning 2021-04-07 to 2026-04-22.

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.

DKS Co. Ltd. 4461

Company

第一工業製薬株式会社DKS Co. Ltd.

Investors

Buys

Total Value

¥22.4B ($144.2M)

Avg Return

+50.95%

Last Filing

2026-04-22

DKS Co. Ltd. (4461) has 26 disclosed large-shareholding filings and 19 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥22.4B ($144.2M) in reported transaction value. The earliest filing StockDrifts holds for DKS Co. Ltd. is dated 2021-04-07; the most recent is 2026-04-22. Across these filings the average return since disclosure is +50.95%, 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
2026-08-31	BUY	Market Buy	片山晃 AKIRA KATAYAMA	passive	825.7K	¥13,740	-	¥11.3B ($73.2M)
2026-08-31	BUY	Market Buy	片山晃 AKIRA KATAYAMA	passive	825.7K	¥13,740	-	¥1.5B ($9.7M)
2026-08-05	BUY	Market Buy	片山晃 AKIRA KATAYAMA	passive	717.4K	¥14,100	-	¥10.1B ($65.3M)
2026-08-05	BUY	Market Buy	片山晃 AKIRA KATAYAMA	passive	717.4K	¥14,100	-1.1%	¥10.1B ($65.3M)
2026-07-22	BUY	Market Buy	野村證券株式会社	other	79.9K	¥10,990	+26.9%	¥822M ($5.3M)
2026-07-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	993	¥10,990	-26.9%	¥1.3B ($8.3M)
2026-07-22	BUY	Market Buy	野村アセットマネジメント株式会社	other	763.7K	¥10,990	+26.9%	¥59M ($379K)
2026-07-07	BUY	unknown	株式会社みずほ銀行	strategic	295.0K	¥10,860	-	-
2026-07-07	BUY	Market Buy	アセットマネジメントOne株式会社	other	471.0K	¥10,860	+28.4%	¥1.2B ($7.7M)
2026-06-22	SELL	unknown	SMBC日興証券株式会社	other	13.4K	¥13,200	-5.7%	¥1.4B ($9.0M)
2026-06-22	SELL	Market Buy	三井住友DSアセットマネジメント株式会社	passive	446.8K	¥13,200	-5.7%	¥1.0B ($6.6M)
2026-06-19	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	118.5K	¥12,570	+11.0%	¥645M ($4.2M)
2026-06-19	BUY	Market Buy	野村アセットマネジメント株式会社	other	758.4K	¥12,570	+11.0%	¥1.3B ($8.2M)
2026-06-19	SELL	unknown	野村證券株式会社	other	5.4K	¥12,570	-11.0%	¥1.5B ($9.4M)
2026-06-04	SELL	unknown	野村證券株式会社	other	122.2K	¥11,260	-23.9%	¥794M ($5.1M)
2026-06-04	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	67.3K	¥11,260	-	¥758M ($4.9M)
2026-06-04	BUY	Market Buy	野村アセットマネジメント株式会社	other	656.7K	¥11,260	+23.9%	¥1.7B ($11.3M)
2026-05-21	BUY	Market Buy	野村アセットマネジメント株式会社	other	501.8K	¥8,640	+61.5%	¥711M ($4.6M)
2026-05-21	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-71.1K	¥8,640	-24.1%	¥1.1B ($7.1M)
2026-05-21	SELL	unknown	野村證券株式会社	other	192.2K	¥8,640	-61.5%	¥46M ($298K)
2026-04-22	BUY	Market Buy	三井住友DSアセットマネジメント株式会社	passive	523.4K	¥7,840	+77.9%	¥4.1B ($26.5M)
2026-04-22	BUY	unknown	SMBC日興証券株式会社	other	119.5K	¥7,840	+77.9%	¥937M ($6.0M)
2026-04-21	SELL	unknown	野村證券株式会社	other	198.1K	¥8,190	-70.3%	¥998M ($6.4M)
2026-04-21	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	56.6K	¥8,190	+70.3%	¥464M ($3.0M)
2026-04-21	BUY	Market Buy	野村アセットマネジメント株式会社	other	419.5K	¥8,190	+70.3%	¥315M ($2.0M)
2026-04-06	BUY	Market Buy	野村證券株式会社	other	319.3K	¥8,070	+72.9%	¥716M ($4.6M)
2026-04-06	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	78	¥8,070	-72.9%	¥1.4B ($9.1M)
2026-04-06	BUY	Market Buy	野村アセットマネジメント株式会社	other	381.6K	¥8,070	+72.9%	¥129M ($834K)
2026-03-23	BUY	unknown	株式会社みずほ銀行	strategic	295.0K	¥7,570	-	-
2026-03-23	BUY	unknown	アセットマネジメントOne株式会社	other	361.2K	¥7,570	+84.3%	¥631M ($4.1M)
2026-02-19	BUY	Market Buy	野村證券株式会社	other	230.7K	¥11,340	+23.0%	¥1.9B ($12.5M)
2026-02-19	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	173.9K	¥11,340	-23.0%	¥1.1B ($7.2M)
2026-02-19	BUY	Market Buy	野村アセットマネジメント株式会社	other	365.8K	¥11,340	+23.0%	¥145M ($938K)
2026-02-06	SELL	Market Buy	三井住友ＤＳアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	521.6K	¥10,950	-27.4%	¥1.2B ($7.9M)
2026-01-09	BUY	Market Buy	野村證券株式会社	other	60.0K	¥8,360	-	-
2026-01-09	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	272.6K	¥8,360	-66.9%	¥98M ($634K)
2026-01-09	BUY	Market Buy	野村アセットマネジメント株式会社	other	352.7K	¥8,360	+66.9%	¥438M ($2.8M)
2025-12-19	SELL	Market Buy	第一生命保険株式会社 The Dai-ichi Life Insurance Company, Limited	passive	459.0K	¥8,360	-66.9%	¥1.6B ($10.3M)
2025-11-20	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	60.4K	¥7,930	+75.9%	¥479M ($3.1M)
2025-11-20	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	284.0K	¥7,930	+75.9%	¥2.3B ($14.5M)
2025-11-20	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	299.8K	¥7,930	+75.9%	¥2.4B ($15.3M)
2025-11-10	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	295.0K	¥7,530	+85.3%	¥2.2B ($14.3M)
2025-11-10	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	277.8K	¥7,530	+85.3%	¥2.1B ($13.5M)
2025-10-07	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	618.2K	¥6,340	+120.0%	¥745M ($4.8M)
2025-10-07	SELL	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	15.1K	¥6,340	-120.0%	¥474M ($3.1M)
2025-10-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	215.6K	¥6,340	+120.0%	¥366M ($2.4M)
2025-10-07	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	295.0K	¥6,340	-120.0%	¥637M ($4.1M)
2025-09-22	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	395.3K	¥5,980	-133.3%	¥192M ($1.2M)
2025-09-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	157.8K	¥5,980	-133.3%	¥294M ($1.9M)
2025-09-05	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	501.3K	¥5,900	+136.4%	¥3.0B ($19.1M)

Showing the 50 most recent of 74 filings.

Frequently asked questions

Who has been buying DKS Co. Ltd. stock?: 9 distinct investors have filed 26 disclosed large-shareholding filings in DKS Co. Ltd. (4461), most recently on 2026-04-22. 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 DKS Co. Ltd. have?: DKS Co. Ltd. has 26 buy-side and 19 sell-side disclosures on record, covering ¥22.4B ($144.2M) in total reported value, spanning 2021-04-07 to 2026-04-22.
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.