Who has been buying Tohoku Electric Power Company, Incorporated stock?

19 distinct investors have filed 14 disclosed large-shareholding filings in Tohoku Electric Power Company, Incorporated (9506), most recently on 2025-06-04. 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 Tohoku Electric Power Company, Incorporated have?

Tohoku Electric Power Company, Incorporated has 14 buy-side and 19 sell-side disclosures on record, covering ¥37.4B ($241.4M) in total reported value, spanning 2021-10-21 to 2025-06-04.

Where does StockDrifts get Tohoku Electric Power Company, Incorporated 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.

Tohoku Electric Power Company, Incorporated 9506

Company

東北電力株式会社Tohoku Electric Power Company, Incorporated

Investors

Buys

Total Value

¥37.4B ($241.4M)

Avg Return

+33.08%

Last Filing

2025-06-04

Tohoku Electric Power Company, Incorporated (9506) has 14 disclosed large-shareholding filings and 19 disclosed disposals on record, filed by 19 distinct investors. Together those filings cover ¥37.4B ($241.4M) in reported transaction value. The earliest filing StockDrifts holds for Tohoku Electric Power Company, Incorporated is dated 2021-10-21; the most recent is 2025-06-04. 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 +33.08%, 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
2025-06-04	BUY	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	6.4M	¥1,008.5	+16.1%	¥6.5B ($41.9M)
2025-06-04	BUY	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	5.8M	¥1,008.5	+16.1%	¥5.9B ($37.8M)
2025-06-04	BUY	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	1.3M	¥1,008.5	+16.1%	¥1.3B ($8.4M)
2025-06-04	BUY	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	571.8K	¥1,008.5	+16.1%	¥577M ($3.7M)
2025-06-04	BUY	Market Buy	ブラックロック・フィナンシャル・マネジメント・インク(BlackRock Financial Management BlackRock Financial Management, Inc.	passive	859.9K	¥1,008.5	+16.1%	¥867M ($5.6M)
2025-06-04	BUY	Market Buy	ブラックロック・アドバイザーズ・エルエルシー(BlackRock Advisers BlackRock Advisers, LLC	passive	599.8K	¥1,008.5	+16.1%	¥605M ($3.9M)
2025-06-04	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	10.3M	¥1,008.5	+16.1%	¥10.3B ($66.8M)
2023-09-25	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	10.8M	¥1,025	-14.2%	¥4.4B ($28.3M)
2023-09-25	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	5.1M	¥1,025	-14.2%	¥5.3B ($33.9M)
2022-06-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	19.1M	¥712	+64.4%	¥13.4B ($86.6M)
2022-06-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-479.9K	¥712	-64.4%	¥1.5B ($9.7M)
2022-06-22	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	2.3M	¥712	-64.4%	¥358M ($2.3M)
2021-12-21	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	7.4M	¥815	-43.6%	¥205M ($1.3M)
2021-12-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	16.2M	¥815	-43.6%	¥1.2B ($7.7M)
2021-12-20	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.6M	¥815	-43.6%	¥2.1B ($13.5M)
2021-12-20	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	2.8M	¥815	-43.6%	¥5.9B ($38.3M)
2021-12-20	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	21.7M	¥815	+43.6%	¥82M ($529K)
2021-12-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	4.2M	¥811	+44.3%	¥3.4B ($21.7M)
2021-12-07	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	21.6M	¥811	+44.3%	¥17.5B ($113.1M)
2021-12-07	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	101.8K	¥811	+44.3%	¥83M ($533K)
2021-12-06	SELL	Market Buy	ブラックロック・インベストメント・マネジメント(ユーケー)リミテッドLimited) BlackRock Investment Management (UK	passive	440.4K	¥808	-44.9%	¥528M ($3.4M)
2021-12-06	SELL	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	1.7M	¥808	-44.9%	¥244M ($1.6M)
2021-12-06	BUY	Market Buy	ブラックロック・アセット・マネジメント・ドイチェランド・アーゲー BlackRock Asset Management Deutschland AG	passive	533.5K	¥808	+44.9%	¥431M ($2.8M)
2021-12-06	SELL	Market Buy	ブラックロック・ライフ・リミテッド BlackRock Life Limited	passive	192.6K	¥808	-44.9%	¥772M ($5.0M)
2021-12-06	SELL	Market Buy	ブラックロック(ルクセンブルグ)エス・エーS.A.) BlackRock (Luxembourg	passive	0	¥808	-44.9%	¥569M ($3.7M)
2021-12-06	SELL	Market Buy	ブラックロック・アドバイザーズ・エルエルシー(BlackRock Advisers BlackRock Advisers, LLC	passive	0	¥808	-44.9%	¥731M ($4.7M)
2021-12-06	SELL	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	2.9M	¥808	-44.9%	¥3.5B ($22.8M)
2021-12-06	SELL	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	4.7M	¥808	-44.9%	¥772M ($5.0M)
2021-12-06	SELL	Market Buy	ブラックロック・インベストメント・マネジメント・エルエルシー BlackRock Investment Management LLC	passive	11.7K	¥808	-44.9%	¥488M ($3.1M)
2021-12-06	SELL	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	5.8M	¥808	-44.9%	¥1.4B ($8.9M)
2021-11-19	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	7.6M	¥756	+54.8%	¥5.8B ($37.3M)
2021-11-19	BUY	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	17.6M	¥756	+54.8%	¥13.3B ($86.0M)
2021-10-21	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	7.1M	¥779	-50.3%	¥235M ($1.5M)
2021-10-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	16.7M	¥779	-50.3%	¥901M ($5.8M)

Frequently asked questions

Who has been buying Tohoku Electric Power Company, Incorporated stock?: 19 distinct investors have filed 14 disclosed large-shareholding filings in Tohoku Electric Power Company, Incorporated (9506), most recently on 2025-06-04. 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 Tohoku Electric Power Company, Incorporated have?: Tohoku Electric Power Company, Incorporated has 14 buy-side and 19 sell-side disclosures on record, covering ¥37.4B ($241.4M) in total reported value, spanning 2021-10-21 to 2025-06-04.
Where does StockDrifts get Tohoku Electric Power Company, Incorporated 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 Tohoku Electric Power Company, Incorporated. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.