Who has been buying Kanamic Network Co.,LTD stock?

10 distinct investors have filed 53 disclosed large-shareholding filings in Kanamic Network Co.,LTD (3939), most recently on 2025-09-10. 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 Kanamic Network Co.,LTD have?

Kanamic Network Co.,LTD has 53 buy-side and 56 sell-side disclosures on record, covering ¥14.7B ($95.1M) in total reported value, spanning 2021-04-05 to 2025-09-10.

Where does StockDrifts get Kanamic Network 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.

Kanamic Network Co.,LTD 3939

Company

株式会社カナミックネットワークKanamic Network Co.,LTD

Investors

Buys

Total Value

¥14.7B ($95.1M)

Avg Return

+0.14%

Last Filing

2025-09-10

Kanamic Network Co.,LTD (3939) has 53 disclosed large-shareholding filings and 56 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥14.7B ($95.1M) in reported transaction value. The earliest filing StockDrifts holds for Kanamic Network Co.,LTD is dated 2021-04-05; the most recent is 2025-09-10. 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 +0.14%, 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
2025-09-10	BUY	unknown	山本拓真 Takuma Yamamoto	other	6.7M	¥509	+13.4%	¥3.4B ($22.0M)
2024-06-04	BUY	negotiated	株式会社SHO SHO Co., Ltd.	activist	13.7M	¥536	+7.7%	¥7.3B ($47.3M)
2024-06-04	BUY	negotiated	山本洋子 Yoko Yamamoto	other	1.4M	¥536	+7.7%	¥753M ($4.9M)
2024-06-04	BUY	Market Buy	山本拓真 Takuma Yamamoto	other	6.7M	¥536	+7.7%	¥3M ($17K)
2024-06-04	BUY	negotiated	山本稔 Minoru Yamamoto	activist	905.6K	¥536	+7.7%	¥485M ($3.1M)
2023-06-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	2.4M	¥450	+28.2%	¥1.0B ($6.8M)
2023-06-06	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-38.2K	¥450	-28.2%	¥145M ($936K)
2023-06-06	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	-4.6K	¥450	-28.2%	¥13M ($84K)
2023-05-10	SELL	unknown	クレディ・スイス・インターナショナル(Credit Suisse International) Credit Suisse International	unknown	0	¥501	-15.2%	¥1.5B ($9.8M)
2023-05-08	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	23.4K	¥457	+26.3%	¥649M ($4.2M)
2023-05-08	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	3.2M	¥457	-26.3%	¥103M ($667K)
2023-05-08	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	285.8K	¥457	+26.3%	¥150M ($965K)
2023-04-19	SELL	unknown	クレディ・スイス証券株式会社 Credit Suisse Securities (Japan) Limited	other	3.8K	¥484	-19.2%	¥105M ($676K)
2023-04-19	BUY	unknown	クレディ・スイス・インターナショナル Credit Suisse International	other	3.3M	¥484	+19.2%	¥1.5B ($9.4M)
2023-04-19	BUY	unknown	クレディ・スイス・エイ・ジー Credit Suisse AG	other	13.8K	¥484	+19.2%	¥7M ($43K)
2023-04-17	BUY	negotiated	株式会社SHO SHO Co., Ltd.	activist	13.7M	¥477	+21.0%	¥6.5B ($42.1M)
2023-04-17	BUY	negotiated	山本洋子 Yoko Yamamoto	other	1.4M	¥477	+21.0%	¥2M ($15K)
2023-04-17	BUY	negotiated	山本稔 Minoru Yamamoto	activist	905.6K	¥477	+21.0%	¥432M ($2.8M)
2023-04-13	BUY	unknown	クレディ・スイス・インターナショナル Credit Suisse International	other	4.9M	¥480	+20.2%	¥60M ($388K)
2023-04-13	BUY	unknown	クレディ・スイス・エイ・ジー Credit Suisse AG	other	13.8K	¥480	+20.2%	¥7M ($43K)
2023-04-13	BUY	unknown	クレディ・スイス証券株式会社 Credit Suisse Securities (Japan) Limited	other	700.0K	¥480	+20.2%	¥336M ($2.2M)
2023-04-11	BUY	unknown	クレディ・スイス・インターナショナル Credit Suisse International	other	4.7M	¥485	+19.0%	¥240M ($1.6M)
2023-04-11	SELL	unknown	クレディ・スイス・エイ・ジー Credit Suisse AG	other	13.8K	¥485	-19.0%	¥467M ($3.0M)
2023-04-11	BUY	unknown	クレディ・スイス証券株式会社 Credit Suisse Securities (Japan) Limited	other	700.0K	¥485	+19.0%	¥340M ($2.2M)
2023-03-20	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-43.7K	¥484	-19.2%	¥7M ($45K)
2023-03-20	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	3.4M	¥484	-19.2%	¥12M ($75K)
2023-03-20	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	988.4K	¥484	-19.2%	¥2M ($15K)
2023-02-22	BUY	unknown	クレディ・スイス・インターナショナル Credit Suisse International	other	4.2M	¥523	+10.3%	¥471M ($3.0M)
2023-02-22	BUY	unknown	クレディ・スイス・エイ・ジー Credit Suisse AG	other	22.3K	¥523	+10.3%	¥503M ($3.2M)
2023-02-22	BUY	unknown	クレディ・スイス証券株式会社 Credit Suisse Securities (Japan) Limited	other	700.0K	¥523	+10.3%	¥366M ($2.4M)
2023-02-08	BUY	unknown	クレディ・スイス・エイ・ジー Credit Suisse AG	other	13.8K	¥562	+2.7%	¥774M ($5.0M)
2023-02-08	BUY	unknown	クレディ・スイス・インターナショナル Credit Suisse International	other	3.2M	¥562	+2.7%	¥590M ($3.8M)
2023-02-08	BUY	unknown	クレディ・スイス・エイ・ジー Credit Suisse AG	other	13.8K	¥562	+2.7%	¥8M ($50K)
2023-02-08	BUY	unknown	クレディ・スイス証券株式会社 Credit Suisse Securities (Japan) Limited	other	700.0K	¥562	+2.7%	¥364M ($2.3M)
2023-02-08	BUY	unknown	クレディ・スイス証券株式会社 Credit Suisse Securities (Japan) Limited	other	700.0K	¥562	+2.7%	¥364M ($2.3M)
2023-02-08	SELL	unknown	クレディ・スイス・インターナショナル Credit Suisse International	other	3.2M	¥562	-2.7%	¥84M ($541K)
2023-01-31	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	992.2K	¥573	-0.7%	¥234M ($1.5M)
2023-01-31	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-30.3K	¥573	-0.7%	¥11M ($71K)
2023-01-31	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	3.4M	¥573	-0.7%	¥135M ($872K)
2023-01-26	SELL	unknown	クレディ・スイス・インターナショナル Credit Suisse International	other	2.0M	¥571	-1.1%	¥338M ($2.2M)
2023-01-26	SELL	unknown	クレディ・スイス・インターナショナル Credit Suisse International	other	2.0M	¥571	-1.1%	¥338M ($2.2M)
2023-01-26	SELL	unknown	クレディ・スイス・エイ・ジー Credit Suisse AG	other	13.8K	¥571	-1.1%	¥2.5B ($16.0M)
2023-01-26	BUY	unknown	クレディ・スイス証券株式会社 Credit Suisse Securities (Japan) Limited	other	5.5M	¥571	+1.1%	¥3.1B ($20.3M)
2023-01-26	SELL	unknown	クレディ・スイス・エイ・ジー Credit Suisse AG	other	13.8K	¥571	-1.1%	¥2.5B ($16.0M)
2023-01-26	BUY	unknown	クレディ・スイス証券株式会社 Credit Suisse Securities (Japan) Limited	other	5.5M	¥571	+1.1%	¥3.1B ($20.3M)
2022-11-28	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	3.6M	¥673	+14.3%	¥100M ($648K)
2022-11-28	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-11.5K	¥673	+14.3%	¥120M ($773K)
2022-11-28	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	1.4M	¥673	+14.3%	¥110M ($711K)
2022-09-12	BUY	Market Buy	株式会社SHO SHO Co., Ltd.	activist	13.7M	¥555	+4.0%	¥7.6B ($49.0M)
2022-09-12	BUY	Market Buy	山本洋子 Yoko Yamamoto	other	1.4M	¥555	+4.0%	¥778M ($5.0M)

Showing the 50 most recent of 140 filings.

Frequently asked questions

Who has been buying Kanamic Network Co.,LTD stock?: 10 distinct investors have filed 53 disclosed large-shareholding filings in Kanamic Network Co.,LTD (3939), most recently on 2025-09-10. 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 Kanamic Network Co.,LTD have?: Kanamic Network Co.,LTD has 53 buy-side and 56 sell-side disclosures on record, covering ¥14.7B ($95.1M) in total reported value, spanning 2021-04-05 to 2025-09-10.
Where does StockDrifts get Kanamic Network 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 Kanamic Network Co.,LTD. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.