Who has been buying CareNet, Inc. stock?

16 distinct investors have filed 19 disclosed large-shareholding filings in CareNet, Inc. (2150), most recently on 2025-10-21. 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 CareNet, Inc. have?

CareNet, Inc. has 19 buy-side and 34 sell-side disclosures on record, covering ¥48.6B ($313.5M) in total reported value, spanning 2021-03-19 to 2025-10-21.

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.

CareNet, Inc. 2150

Company

株式会社ケアネットCareNet, Inc.

Investors

Buys

Total Value

¥48.6B ($313.5M)

Avg Return

+1.36%

Last Filing

2025-10-21

CareNet, Inc. (2150) has 19 disclosed large-shareholding filings and 34 disclosed disposals on record, filed by 16 distinct investors. Together those filings cover ¥48.6B ($313.5M) in reported transaction value. The earliest filing StockDrifts holds for CareNet, Inc. is dated 2021-03-19; the most recent is 2025-10-21. Across these filings the average return since disclosure is +1.36%, 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
2025-10-21	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	13.9K	¥1,124	-	-
2025-10-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.0M	¥1,124	-	-
2025-10-21	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	266.6K	¥1,124	+0.0%	¥1.8B ($11.4M)
2025-10-15	BUY	unknown	テンパード・インベストメント・マネジメント・リミテッド(Tempered Investment Management LTD.) Tempered Investment Management LTD.	other	2.5M	¥1,123	-	-
2025-10-15	SELL	unknown	テンパード・インベストメント・マネジメント・リミテッド(Tempered Investment Management LTD.) Tempered Investment Management LTD.	other	0	¥1,123	-0.1%	¥2.8B ($18.2M)
2025-10-15	SELL	unknown	株式会社メディカルインキュベータジャパン Medical Incubator Japan K.K.	other	0	¥1,123	-0.1%	¥7.6B ($48.8M)
2025-10-15	SELL	unknown	大野元泰 Motoyasu Ohno	other	141.1K	¥1,123	-0.1%	¥984M ($6.4M)
2025-10-15	SELL	unknown	秦充洋 Mitsuhiro Hata	other	0	¥1,123	-0.1%	¥200M ($1.3M)
2025-10-14	SELL	unknown	テンパード・インベストメント・マネジメント・リミテッド(Tempered Investment Management LTD.) Tempered Investment Management LTD.	other	0	¥1,124	+0.0%	¥2.8B ($18.3M)
2025-10-08	BUY	unknown	Curie 1株式会社 Curie 1, K.K.	activist	31.3M	¥1,123	-	-
2025-10-07	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	15.1K	¥1,124	+0.0%	¥5M ($34K)
2025-10-07	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	1.8M	¥1,124	+0.0%	¥627M ($4.0M)
2025-10-07	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.0M	¥1,124	+0.0%	¥32M ($204K)
2025-10-06	BUY	unknown	大野元泰 Motoyasu Ohno	other	1.0M	¥1,125	-	-
2025-10-06	BUY	unknown	秦充洋 Mitsuhiro Hata	other	180.0K	¥1,125	-	-
2025-10-06	BUY	unknown	株式会社メディカルインキュベータジャパン Medical Incubator Japan K.K.	other	6.7M	¥1,125	-	-
2025-09-30	BUY	acquisition	Curie 1株式会社 Curie 1, K.K.	activist	31.3M	¥1,118	+0.5%	¥35.0B ($225.6M)
2025-09-22	BUY	unknown	秦充洋 Mitsuhiro Hata	other	180.0K	¥1,127	-	-
2025-09-22	SELL	unknown	株式会社メディカルインキュベータジャパン Medical Incubator Japan K.K.	other	6.7M	¥1,127	+0.3%	¥164M ($1.1M)
2025-09-22	BUY	unknown	大野元泰 Motoyasu Ohno	other	1.0M	¥1,127	-0.3%	¥121M ($784K)
2025-09-19	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	19.5K	¥1,128	-0.3%	¥22M ($142K)
2025-09-19	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.3M	¥1,128	-0.3%	¥1.4B ($9.3M)
2025-09-19	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.0M	¥1,128	-0.3%	¥1.2B ($7.6M)
2025-08-27	BUY	Market Buy	カナメ・キャピタル・エルピー(Kaname Capital,L.P.) Kaname Capital, L.P.	passive	2.4M	¥1,127	-0.3%	¥2.7B ($17.7M)
2025-08-25	SELL	unknown	テンパード・インベストメント・マネジメント・リミテッド(Tempered Investment Management LTD.) Tempered Investment Management LTD.	other	2.5M	¥1,126	+0.2%	¥2.0B ($12.8M)
2025-07-04	SELL	unknown	テンパード・インベストメント・マネジメント・リミテッド(Tempered Investment Management LTD.) Tempered Investment Management LTD.	other	4.3M	¥693	-62.2%	¥354M ($2.3M)
2024-05-22	BUY	Market Buy	テンパード・インベストメント・マネジメント・リミテッド(Tempered Investment Management LTD.) Tempered Investment Management LTD.	other	4.8M	¥527	+113.3%	¥252M ($1.6M)
2024-03-27	BUY	unknown	秦充洋 Mitsuhiro Hata	other	180.0K	¥670	-	-
2024-03-27	SELL	unknown	株式会社メディカルインキュベータジャパン Medical Incubator Japan K.K.	other	6.9M	¥670	-67.8%	¥176M ($1.1M)
2024-03-27	BUY	unknown	大野元泰 Motoyasu Ohno	other	910.8K	¥670	-	-
2024-01-18	SELL	Market Buy	アーチザン・インベストメンツ・ジーピー・エルエルシー(Artisan Investments GP LLC) Artisan Investments GP LLC	passive	1.9M	¥813	-38.3%	¥476M ($3.1M)
2024-01-09	SELL	Market Buy	アーチザン・インベストメンツ・ジーピー・エルエルシー(Artisan Investments GP LLC) Artisan Investments GP LLC	passive	2.4M	¥908	-23.8%	¥655M ($4.2M)
2023-05-18	SELL	Market Buy	アーチザン・インベストメンツ・ジーピー・エルエルシー(Artisan Investments GP LLC) Artisan Investments GP LLC	passive	3.2M	¥811	-38.6%	¥384M ($2.5M)
2023-05-08	SELL	Market Buy	アーチザン・インベストメンツ・ジーピー・エルエルシー(Artisan Investments GP LLC) Artisan Investments GP LLC	passive	3.6M	¥896	-25.4%	¥672M ($4.3M)
2023-04-05	SELL	Market Buy	アーチザン・インベストメンツ・ジーピー・エルエルシー(Artisan Investments GP LLC) Artisan Investments GP LLC	passive	4.4M	¥1,067	-5.3%	¥520M ($3.4M)
2023-03-16	SELL	Market Buy	アーチザン・インベストメンツ・ジーピー・エルエルシー(Artisan Investments GP LLC) Artisan Investments GP LLC	passive	4.9M	¥1,145	+1.8%	¥558M ($3.6M)
2022-12-09	BUY	unknown	大野元泰 Motoyasu Ohno	other	910.8K	¥1,189	-	-
2022-12-09	BUY	unknown	秦充洋 Mitsuhiro Hata	other	180.0K	¥1,189	-	-
2022-12-09	BUY	unknown	株式会社メディカルインキュベータジャパン Medical Incubator Japan K.K.	other	7.1M	¥1,189	-	-
2022-12-02	SELL	unknown	株式会社メディカルインキュベータジャパン Medical Incubator Japan K.K.	other	7.1M	¥1,144	+1.8%	¥263M ($1.7M)
2022-12-02	SELL	unknown	秦充洋 Mitsuhiro Hata	other	180.0K	¥1,144	+1.8%	¥48M ($311K)
2022-12-02	BUY	unknown	大野元泰 Motoyasu Ohno	other	910.8K	¥1,144	-1.8%	¥38M ($242K)
2022-11-18	SELL	unknown	株式会社メディカルインキュベータジャパン Medical Incubator Japan K.K.	other	7.4M	¥1,348	+16.6%	¥897M ($5.8M)
2022-11-18	SELL	unknown	大野元泰 Motoyasu Ohno	other	874.5K	¥1,348	+16.6%	¥133M ($856K)
2022-11-18	BUY	unknown	秦充洋 Mitsuhiro Hata	other	220.0K	¥1,348	-	-
2022-08-17	SELL	unknown	株式会社メディカルインキュベータジャパン Medical Incubator Japan K.K.	other	8.0M	¥1,194	+5.9%	¥733M ($4.7M)
2022-08-17	SELL	unknown	大野元泰 Motoyasu Ohno	other	974.5K	¥1,194	+5.9%	¥67M ($433K)
2022-08-17	SELL	unknown	秦充洋 Mitsuhiro Hata	other	220.0K	¥1,194	+5.9%	¥17M ($108K)
2022-05-18	SELL	unknown	東京海上日動火災保険株式会社 Tokio Marine & Nichido Fire Insurance Co., Ltd.	other	2.3M	¥855	-31.5%	¥116M ($750K)
2022-01-11	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	128.8K	¥943	+19.2%	¥99M ($637K)

Showing the 50 most recent of 77 filings.

Frequently asked questions

Who has been buying CareNet, Inc. stock?: 16 distinct investors have filed 19 disclosed large-shareholding filings in CareNet, Inc. (2150), most recently on 2025-10-21. 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 CareNet, Inc. have?: CareNet, Inc. has 19 buy-side and 34 sell-side disclosures on record, covering ¥48.6B ($313.5M) in total reported value, spanning 2021-03-19 to 2025-10-21.
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.