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DKS Co. Ltd. 4461

Company
第一工業製薬株式会社DKS Co. Ltd.
Investors
9
Buys
26
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. 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 +50.95%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-08-05BUYMarket Buy
片山 晃
AKIRA KATAYAMA
passive717.4K¥14,100+8.4%¥10.1B ($65.3M)
2026-07-22BUYMarket Buy
野村アセットマネジメント株式会社
other763.7K¥10,990+39.0%¥59M ($379K)
2026-07-22SELLunknown
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other993¥10,990-39.0%¥1.3B ($8.3M)
2026-07-22BUYMarket Buy
野村證券株式会社
other79.9K¥10,990+39.0%¥822M ($5.3M)
2026-07-07BUYunknown
株式会社みずほ銀行
strategic295.0K¥10,860+29.8%¥3.2B ($20.7M)
2026-07-07BUYMarket Buy
アセットマネジメントOne株式会社
other471.0K¥10,860+29.8%¥1.2B ($7.7M)
2026-06-22SELLMarket Buy
三井住友DSアセットマネジメント株式会社
passive446.8K¥13,200+23.5%¥1.0B ($6.6M)
2026-06-22SELLunknown
SMBC日興証券株式会社
other13.4K¥13,200+23.5%¥1.4B ($9.0M)
2026-06-19BUYMarket Buy
野村アセットマネジメント株式会社
other758.4K¥12,570-19.6%¥1.3B ($8.2M)
2026-06-19BUYMarket Buy
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other118.5K¥12,570-19.6%¥645M ($4.2M)
2026-06-19SELLunknown
野村證券株式会社
other5.4K¥12,570+19.6%¥1.5B ($9.4M)
2026-06-04BUYMarket Buy
野村アセットマネジメント株式会社
other656.7K¥11,260+14.4%¥1.7B ($11.3M)
2026-06-04BUYunknown
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other67.3K¥11,260+14.4%¥758M ($4.9M)
2026-06-04SELLunknown
野村證券株式会社
other122.2K¥11,260-14.4%¥794M ($5.1M)
2026-05-21BUYMarket Buy
野村アセットマネジメント株式会社
other501.8K¥8,640+24.1%¥711M ($4.6M)
2026-05-21SELLunknown
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)
2026-05-21SELLunknown
野村證券株式会社
other192.2K¥8,640-24.1%¥46M ($298K)
2026-04-22BUYunknown
SMBC日興証券株式会社
other119.5K¥7,840+17.4%¥937M ($6.0M)
2026-04-22BUYMarket Buy
三井住友DSアセットマネジメント株式会社
passive523.4K¥7,840+17.4%¥4.1B ($26.5M)
2026-04-21BUYMarket Buy
野村アセットマネジメント株式会社
other419.5K¥8,190+6.2%¥315M ($2.0M)
2026-04-21BUYMarket Buy
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other56.6K¥8,190+6.2%¥464M ($3.0M)
2026-04-21SELLunknown
野村證券株式会社
other198.1K¥8,190-6.2%¥998M ($6.4M)
2026-04-06BUYMarket Buy
野村アセットマネジメント株式会社
other381.6K¥8,070+3.1%¥129M ($834K)
2026-04-06SELLMarket Buy
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other78¥8,070-3.1%¥1.4B ($9.1M)
2026-04-06BUYMarket Buy
野村證券株式会社
other319.3K¥8,070+3.1%¥716M ($4.6M)
2026-03-23BUYunknown
アセットマネジメントOne株式会社
other361.2K¥7,570+8.5%¥3.0B ($19.1M)
2026-03-23BUYunknown
株式会社みずほ銀行
strategic295.0K¥7,570-8.5%¥2.4B ($15.6M)
2026-02-19BUYMarket Buy
野村證券株式会社
other230.7K¥11,340-27.6%¥1.9B ($12.2M)
2026-02-19BUYMarket Buy
野村アセットマネジメント株式会社
other365.8K¥11,340-27.6%¥3.0B ($19.4M)
2026-02-19SELLMarket Buy
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other173.9K¥11,340+27.6%¥1.4B ($9.2M)
2026-02-06SELLMarket 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
passive521.6K¥10,950+25.0%¥1.2B ($7.9M)
2026-01-09BUYMarket Buy
野村アセットマネジメント株式会社
other352.7K¥8,360-1.8%¥2.9B ($18.7M)
2026-01-09SELLMarket Buy
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other272.6K¥8,360+1.8%¥2.2B ($14.4M)
2026-01-09BUYMarket Buy
野村證券株式会社
other60.0K¥8,360+1.8%¥492M ($3.2M)
2025-12-19SELLMarket Buy
第一生命保険株式会社
The Dai-ichi Life Insurance Company, Limited
passive459.0K¥8,360+1.8%¥1.6B ($10.3M)
2025-11-20BUYunknown
野村アセットマネジメント株式会社
Nomura Asset Management Co., Ltd.
other299.8K¥7,930+3.5%¥2.4B ($15.3M)
2025-11-20BUYunknown
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other284.0K¥7,930+3.5%¥2.3B ($14.5M)
2025-11-20BUYunknown
野村證券株式会社
Nomura Securities Co.,Ltd.
other60.4K¥7,930+3.5%¥479M ($3.1M)
2025-11-10BUYunknown
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other277.8K¥7,530+9.0%¥2.1B ($13.5M)
2025-11-10BUYunknown
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic295.0K¥7,530+9.0%¥2.2B ($14.3M)
2025-10-07BUYunknown
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other215.6K¥6,340+29.5%¥366M ($2.4M)
2025-10-07BUYMarket 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
passive618.2K¥6,340+29.5%¥745M ($4.8M)
2025-10-07SELLunknown
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic295.0K¥6,340-29.5%¥637M ($4.1M)
2025-10-07SELLMarket Buy
SMBC日興証券株式会社
SMBC Nikko Securities Inc.
other15.1K¥6,340-29.5%¥474M ($3.1M)
2025-09-22SELLunknown
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other157.8K¥5,980-37.3%¥294M ($1.9M)
2025-09-22SELLunknown
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic395.3K¥5,980-37.3%¥192M ($1.2M)
2025-09-05BUYMarket Buy
SMBC日興証券株式会社
SMBC Nikko Securities Inc.
other89.6K¥5,900+39.1%¥529M ($3.4M)
2025-09-05BUYMarket 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
passive501.3K¥5,900+39.1%¥3.0B ($19.1M)
2024-09-20SELLunknown
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other161.9K¥3,030-171.0%¥434M ($2.8M)
2024-09-20BUYunknown
野村アセットマネジメント株式会社
Nomura Asset Management Co., Ltd.
other250.8K¥3,030+171.0%¥3M ($21K)

Showing the 50 most recent of 71 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.
Where does StockDrifts get DKS Co. Ltd. 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 DKS Co. Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.