Who has been buying CNS Co.,Ltd stock?

3 distinct investors have filed 3 disclosed large-shareholding filings in CNS Co.,Ltd (4076), most recently on 2025-11-04. 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 CNS Co.,Ltd have?

CNS Co.,Ltd has 3 buy-side and 3 sell-side disclosures on record, covering ¥1.9B ($12.1M) in total reported value, spanning 2021-08-23 to 2025-11-04.

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.

CNS Co.,Ltd 4076

Company

株式会社シイエヌエスCNS Co.,Ltd

Investors

Buys

Total Value

¥1.9B ($12.1M)

Avg Return

-27.20%

Last Filing

2025-11-04

CNS Co.,Ltd (4076) has 3 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥1.9B ($12.1M) in reported transaction value. The earliest filing StockDrifts holds for CNS Co.,Ltd is dated 2021-08-23; the most recent is 2025-11-04. Across these filings the average return since disclosure is -27.20%, 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	unknown	N&KT株式会社	activist	600.0K	¥2,017	-	-
2026-08-31	BUY	unknown	富山広己	activist	404.8K	¥2,017	-	-
2025-11-04	BUY	negotiated	富山広己 Hiromi Tomiyama	activist	404.8K	¥1,653	-	-
2025-11-04	BUY	negotiated	関根政英 Masahide Sekine	activist	178.2K	¥1,653	-	-
2025-11-04	BUY	negotiated	N&KT株式会社 N&KT Co., Ltd.	activist	600.0K	¥1,653	-	-
2025-09-12	BUY	negotiated	富山広己 Hiromi Tomiyama	activist	404.8K	¥1,521	-	-
2025-09-12	BUY	negotiated	N&KT株式会社 N&KT Co., Ltd.	activist	600.0K	¥1,521	-	-
2023-11-24	BUY	negotiated	関根政英 Masahide Sekine	activist	178.2K	¥1,688	-	¥8M ($54K)
2023-11-24	SELL	negotiated	関根政英 Masahide Sekine	activist	178.2K	¥1,688	-19.7%	¥8M ($54K)
2022-05-06	SELL	negotiated	富山広己 Hiromi Tomiyama	activist	404.8K	¥1,538	-31.3%	¥17M ($110K)
2022-05-06	SELL	negotiated	N&KT株式会社 N&KT Co., Ltd.	activist	600.0K	¥1,538	-31.3%	¥25M ($164K)
2021-08-23	BUY	negotiated	関根政英 Masahide Sekine	activist	178.2K	¥2,419	-16.5%	¥431M ($2.8M)
2021-08-23	BUY	negotiated	富山広己 Hiromi Toyama	activist	404.8K	¥2,419	-16.5%	¥979M ($6.3M)
2021-08-23	BUY	negotiated	N&KT株式会社 N&KT Co., Ltd.	activist	600.0K	¥2,419	-16.5%	¥1.5B ($9.4M)

Frequently asked questions

Who has been buying CNS Co.,Ltd stock?: 3 distinct investors have filed 3 disclosed large-shareholding filings in CNS Co.,Ltd (4076), most recently on 2025-11-04. 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 CNS Co.,Ltd have?: CNS Co.,Ltd has 3 buy-side and 3 sell-side disclosures on record, covering ¥1.9B ($12.1M) in total reported value, spanning 2021-08-23 to 2025-11-04.
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.