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.

Where does StockDrifts get Tokai Carbon 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.

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. 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 -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
2026-08-12	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	+1.2%	¥4.4B ($28.2M)
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	-1.2%	¥409M ($2.6M)
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	-1.2%	¥1.2B ($7.9M)
2026-08-12	BUY	Market Buy	野村證券株式会社	other	3.3M	¥1,818.5	-1.2%	¥2.5B ($15.8M)
2026-08-06	BUY	unknown	野村證券株式会社	other	2.0M	¥1,757	+2.3%	¥3.6B ($23.0M)
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%	-
2026-08-06	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	+2.3%	¥40M ($255K)
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	-2.3%	¥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	-2.3%	¥237M ($1.5M)
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	+2.3%	¥79M ($510K)
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	-9.0%	¥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	-9.0%	¥519M ($3.4M)
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	+3.7%	¥75M ($485K)
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	+3.7%	¥33.4B ($215.5M)
2026-07-10	SELL	unknown	野村證券株式会社	other	-25.7K	¥1,671.5	+3.4%	-
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	+3.7%	¥564M ($3.6M)
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	-6.5%	¥78M ($502K)
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	+6.5%	¥39M ($251K)
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	+6.5%	¥4.6B ($29.8M)
2026-06-23	BUY	unknown	野村證券株式会社	other	277.2K	¥1,728	-6.5%	¥479M ($3.1M)
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	-8.9%	¥200M ($1.3M)
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	-8.9%	¥160M ($1.0M)
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	-8.9%	¥4.8B ($31.2M)
2026-06-18	SELL	unknown	野村證券株式会社	other	-7.6K	¥1,774	-	-
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	-7.4%	¥732M ($4.7M)
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	+7.4%	¥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	-7.4%	¥41M ($263K)
2026-06-16	BUY	unknown	野村證券株式会社	other	333.3K	¥1,809	-7.4%	¥603M ($3.9M)
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	-7.4%	¥3.7B ($24.0M)
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	-7.4%	¥1.5B ($9.6M)
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	-7.4%	¥3.4B ($21.8M)
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	+11.2%	¥478M ($3.1M)
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	-11.2%	¥699M ($4.5M)
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	+11.2%	¥1.8B ($11.4M)
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	+11.2%	¥2.1B ($13.8M)
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	SELL	unknown	三菱UFJモルガン・スタンレー証券株式会社	other	51.3K	¥1,190	-59.6%	¥1.1B ($7.1M)
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	+59.6%	¥1.5B ($9.5M)
2026-05-08	SELL	unknown	MUFGセキュリティーズEMEA MUFG Securities EMEA plc	unknown	0	¥1,190	-59.6%	¥2.4B ($15.4M)
2026-05-08	BUY	Market Buy	三菱UFJ信託銀行株式会社	passive	8.1M	¥1,190	+59.6%	¥321M ($2.1M)
2026-05-08	BUY	negotiated	株式会社三菱UFJ銀行	strategic	5.8M	¥1,190	+59.6%	¥6.9B ($44.7M)
2026-04-06	SELL	negotiated	三菱UFJアセットマネジメント株式会社	passive	3.1M	¥992.9	-15.4%	¥1.0B ($6.5M)
2026-04-06	BUY	negotiated	MUFGセキュリティーズEMEA MUFG Securities EMEA plc	other	2.0M	¥992.9	+15.4%	¥2.0B ($12.8M)
2026-04-06	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社	other	971.2K	¥992.9	+15.4%	¥692M ($4.5M)
2026-04-06	SELL	negotiated	三菱UFJ信託銀行株式会社	passive	7.8M	¥992.9	-15.4%	¥737M ($4.8M)
2026-04-06	BUY	negotiated	株式会社三菱UFJ銀行	strategic	5.8M	¥992.9	+15.4%	¥5.8B ($37.3M)
2026-01-19	SELL	Market Buy	三菱UFJモルガン・スタンレー証券株式会社	other	264.0K	¥1,049.5	-0.0%	¥277M ($1.8M)
2026-01-19	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	4.1M	¥1,049.5	+0.0%	¥4.3B ($27.5M)
2026-01-19	BUY	Market Buy	MUFGセキュリティーズEMEA MUFG Securities EMEA plc	other	2.0M	¥1,049.5	-0.0%	¥2.1B ($13.5M)
2026-01-19	BUY	Market Buy	三菱UFJ信託銀行株式会社	passive	8.6M	¥1,049.5	+0.0%	¥9.0B ($58.0M)

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.
Where does StockDrifts get Tokai Carbon 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 Tokai Carbon Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.