Who has been buying Tokai Carbon Co., Ltd. stock?

12 distinct investors have filed 133 disclosed large-shareholding filings in Tokai Carbon Co., Ltd. (5301), most recently on 2026-05-08. 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 Tokai Carbon Co., Ltd. have?

Tokai Carbon Co., Ltd. has 133 buy-side and 173 sell-side disclosures on record, covering ¥330.0B ($2.1B) in total reported value, spanning 2021-03-30 to 2026-05-08.

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.

Tokai Carbon Co., Ltd. 5301

Company

東海カーボン株式会社Tokai Carbon Co., Ltd.

Investors

Buys

133

Total Value

¥330.0B ($2.1B)

Avg Return

-4.94%

Last Filing

2026-05-08

Tokai Carbon Co., Ltd. (5301) has 133 disclosed large-shareholding filings and 173 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥330.0B ($2.1B) in reported transaction value. The earliest filing StockDrifts holds for Tokai Carbon Co., Ltd. is dated 2021-03-30; the most recent is 2026-05-08. Across these filings the average return since disclosure is -4.94%, 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
2026-09-24	BUY	Market Buy	アモーヴァ・アセットマネジメント株式会社	other	8.4M	¥1,977	+0.0%	¥641M ($4.1M)
2026-09-24	BUY	Market Buy	三井住友トラスト・アセットマネジメント株式会社	other	5.4M	¥1,977	+0.0%	¥1.1B ($6.9M)
2026-09-24	BUY	Market Buy	野村アセットマネジメント株式会社	other	20.1M	¥1,977	+0.0%	¥2.1B ($13.5M)
2026-09-24	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	6.7M	¥1,977	+0.0%	¥7.6B ($49.3M)
2026-09-24	SELL	unknown	野村證券株式会社	other	7.1K	¥1,977	+0.0%	¥43M ($276K)
2026-09-01	SELL	unknown	野村アセットマネジメント株式会社	other	19.8M	¥1,907	-3.7%	¥515M ($3.3M)
2026-09-01	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	2.9M	¥1,907	+3.7%	¥3.6B ($23.5M)
2026-09-01	SELL	unknown	野村證券株式会社	other	21.6K	¥1,907	-3.7%	¥5.9B ($37.9M)
2026-08-18	SELL	unknown	野村證券株式会社	other	3.1M	¥1,846	-7.1%	¥457M ($2.9M)
2026-08-18	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	1.0M	¥1,846	+7.1%	¥1.7B ($11.0M)
2026-08-18	BUY	Market Buy	野村アセットマネジメント株式会社	other	20.0M	¥1,846	+7.1%	¥42M ($268K)
2026-08-12	BUY	Market Buy	野村證券株式会社	other	3.3M	¥1,818.5	+8.7%	¥2.5B ($15.8M)
2026-08-12	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	109.0K	¥1,818.5	+8.7%	¥1.2B ($7.9M)
2026-08-12	BUY	Market Buy	野村アセットマネジメント株式会社	other	20.0M	¥1,818.5	+8.7%	¥409M ($2.6M)
2026-08-12	SELL	unknown	野村キャピタル・インベストメント株式会社	unknown	0	¥1,818.5	-8.7%	¥4.4B ($28.2M)
2026-08-06	BUY	unknown	野村證券株式会社	other	2.0M	¥1,757	-	¥3.6B ($23.0M)
2026-08-06	BUY	Market Buy	野村アセットマネジメント株式会社	other	20.0M	¥1,757	+12.5%	¥79M ($510K)
2026-08-06	SELL	Market Buy	野村キャピタル・インベストメント株式会社	passive	2.4M	¥1,757	-12.5%	¥237M ($1.5M)
2026-08-06	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	5.1M	¥1,757	-12.5%	¥79M ($510K)
2026-08-06	BUY	Market Buy	アモーヴァ・アセットマネジメント株式会社	other	8.4M	¥1,757	+12.5%	¥40M ($255K)
2026-08-06	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-573.7K	¥1,622	+0.0%	-
2026-07-22	SELL	unknown	アモーヴァ・アセットマネジメント株式会社	other	8.4M	¥1,649	-19.9%	¥742M ($4.8M)
2026-07-22	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	5.2M	¥1,649	-19.9%	¥519M ($3.4M)
2026-07-10	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	382.1K	¥1,671.5	+18.3%	¥564M ($3.6M)
2026-07-10	BUY	unknown	野村アセットマネジメント株式会社	other	20.0M	¥1,671.5	-	-
2026-07-10	BUY	Market Buy	野村キャピタル・インベストメント株式会社	passive	2.6M	¥1,671.5	+18.3%	¥75M ($485K)
2026-07-10	SELL	unknown	野村證券株式会社	other	-25.7K	¥1,671.5	+3.4%	-
2026-06-23	BUY	unknown	野村證券株式会社	other	277.2K	¥1,728	-	¥479M ($3.1M)
2026-06-23	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	35.6K	¥1,728	-14.4%	¥4.6B ($29.8M)
2026-06-23	SELL	unknown	野村アセットマネジメント株式会社	other	20.0M	¥1,728	-14.4%	¥39M ($251K)
2026-06-23	BUY	Market Buy	野村キャピタル・インベストメント株式会社	passive	2.5M	¥1,728	+14.4%	¥78M ($502K)
2026-06-18	SELL	unknown	野村證券株式会社	other	-7.6K	¥1,774	-	-
2026-06-18	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	2.7M	¥1,774	+11.4%	¥4.8B ($31.2M)
2026-06-18	BUY	Market Buy	野村アセットマネジメント株式会社	other	20.0M	¥1,774	+11.4%	¥160M ($1.0M)
2026-06-18	BUY	Market Buy	野村キャピタル・インベストメント株式会社	passive	2.5M	¥1,774	+11.4%	¥200M ($1.3M)
2026-06-16	BUY	unknown	野村證券株式会社	other	333.3K	¥1,809	-	¥603M ($3.9M)
2026-06-16	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	9.5K	¥1,809	-9.3%	¥6.4B ($41.2M)
2026-06-16	BUY	Market Buy	野村アセットマネジメント株式会社	other	19.9M	¥1,809	+9.3%	¥41M ($263K)
2026-06-16	BUY	Market Buy	野村キャピタル・インベストメント株式会社	passive	2.4M	¥1,809	+9.3%	¥732M ($4.7M)
2026-06-05	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	3.6M	¥1,899.5	+4.1%	¥3.4B ($21.8M)
2026-06-05	BUY	Market Buy	野村アセットマネジメント株式会社	other	19.8M	¥1,899.5	+4.1%	¥1.5B ($9.6M)
2026-06-05	BUY	Market Buy	野村キャピタル・インベストメント株式会社	passive	2.0M	¥1,899.5	-	¥3.7B ($24.0M)
2026-05-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社	other	5.5M	¥1,634.5	-20.9%	¥699M ($4.5M)
2026-05-21	BUY	Market Buy	アモーヴァ・アセットマネジメント株式会社	other	8.8M	¥1,634.5	+20.9%	¥478M ($3.1M)
2026-05-21	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	1.7M	¥1,634.5	+20.9%	¥2.1B ($13.8M)
2026-05-21	BUY	Market Buy	野村アセットマネジメント株式会社	other	18.9M	¥1,634.5	+20.9%	¥1.8B ($11.4M)
2026-05-21	SELL	unknown	野村證券株式会社	other	-10.9M	¥1,634.5	-11.2%	¥17.9B ($115.5M)
2026-05-08	BUY	Market Buy	三菱UFJ信託銀行株式会社	passive	8.1M	¥1,190	+66.1%	¥321M ($2.1M)
2026-05-08	SELL	unknown	MUFGセキュリティーズEMEA MUFG Securities EMEA plc	unknown	0	¥1,190	-66.1%	¥2.4B ($15.4M)
2026-05-08	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	4.3M	¥1,190	+66.1%	¥1.5B ($9.5M)

Showing the 50 most recent of 200 filings.

Frequently asked questions

Who has been buying Tokai Carbon Co., Ltd. stock?: 12 distinct investors have filed 133 disclosed large-shareholding filings in Tokai Carbon Co., Ltd. (5301), most recently on 2026-05-08. 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 Tokai Carbon Co., Ltd. have?: Tokai Carbon Co., Ltd. has 133 buy-side and 173 sell-side disclosures on record, covering ¥330.0B ($2.1B) in total reported value, spanning 2021-03-30 to 2026-05-08.
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.