Who has been buying Nidec Corporation stock?

24 distinct investors have filed 25 disclosed large-shareholding filings in Nidec Corporation (6594), most recently on 2026-05-13. 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 Nidec Corporation have?

Nidec Corporation has 25 buy-side and 18 sell-side disclosures on record, covering ¥253.0B ($1.6B) in total reported value, spanning 2022-01-07 to 2026-05-13.

Where does StockDrifts get Nidec Corporation 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.

Nidec Corporation 6594

Company

日本電産株式会社Nidec Corporation

Investors

Buys

Total Value

¥253.0B ($1.6B)

Avg Return

-25.72%

Last Filing

2026-05-13

Nidec Corporation (6594) has 25 disclosed large-shareholding filings and 18 disclosed disposals on record, filed by 24 distinct investors. Together those filings cover ¥253.0B ($1.6B) in reported transaction value. The earliest filing StockDrifts holds for Nidec Corporation is dated 2022-01-07; the most recent is 2026-05-13. 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 -25.72%, 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
2026-05-13	BUY	block_purchase	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	other	80.8M	¥2,435	+13.9%	¥1.2B ($7.5M)
2026-03-11	BUY	acquisition	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	80.3M	¥2,228	+8.1%	¥179.0B ($1.2B)
2025-12-26	BUY	unknown	永守重信 Nagamori Shigenobu	other	139.4M	¥2,076	+16.0%	¥289.5B ($1.9B)
2025-12-26	BUY	unknown	エスエヌ興産合同会社	other	40.5M	¥2,076	-16.0%	¥97.5B ($629.1M)
2025-12-26	BUY	unknown	永守重信	other	98.9M	¥2,076	-16.0%	¥238.3B ($1.5B)
2025-11-17	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	591.6K	¥2,064	-16.7%	¥22.6B ($146.1M)
2025-11-17	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	4.3M	¥2,064	-16.7%	¥34.2B ($220.7M)
2025-11-17	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	29.7M	¥2,064	+16.7%	¥61.3B ($395.5M)
2025-11-05	BUY	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	1.4M	¥2,040	+18.0%	¥2.9B ($19.0M)
2025-11-05	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	10.8M	¥2,040	-18.0%	¥1.5B ($9.4M)
2025-11-05	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	15.3M	¥2,040	+18.0%	¥1.9B ($12.6M)
2025-11-05	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	5.9M	¥2,040	+18.0%	¥2.2B ($14.1M)
2025-11-05	SELL	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	2.1M	¥2,040	-18.0%	¥487M ($3.1M)
2025-11-05	SELL	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	2.8M	¥2,040	-18.0%	¥487M ($3.1M)
2025-11-05	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	884.9K	¥2,040	-18.0%	¥1.7B ($11.0M)
2025-11-05	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	1.1M	¥2,040	-18.0%	¥2.2B ($14.1M)
2025-11-05	SELL	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	4.1M	¥2,040	-18.0%	¥31.4B ($202.5M)
2025-07-22	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	22.1M	¥2,721	-11.5%	¥1.9B ($12.6M)
2025-07-22	SELL	negotiated	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	23.0M	¥2,721	+11.5%	¥5.8B ($37.7M)
2025-07-22	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	14.0M	¥2,721	-11.5%	¥38.2B ($246.2M)
2024-09-24	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	22.9M	¥3,016	-20.2%	¥68.2B ($440.1M)
2024-09-24	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	458.2K	¥3,016	-20.2%	¥1.4B ($8.9M)
2024-09-24	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	526.1K	¥3,016	+20.2%	¥5.9B ($38.3M)
2024-09-20	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	10.7M	¥2,938.5	+18.1%	¥350M ($2.3M)
2024-09-20	SELL	negotiated	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	12.6M	¥2,938.5	+18.1%	¥2.6B ($17.0M)
2024-09-20	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	7.0M	¥2,938.5	-18.1%	¥20.6B ($132.9M)
2024-07-29	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	503.4K	¥3,340.5	+27.9%	¥1.8B ($11.6M)
2024-07-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	14.9M	¥3,340.5	-27.9%	¥49.6B ($320.1M)
2024-07-29	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	5.8M	¥3,340.5	+27.9%	¥1.6B ($10.3M)
2024-07-29	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	10.4M	¥3,340.5	-27.9%	¥4.0B ($25.7M)
2024-06-06	BUY	negotiated	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	13.5M	¥3,608.5	-33.3%	¥3.0B ($19.4M)
2024-06-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	7.0M	¥3,608.5	-33.3%	¥25.3B ($163.2M)
2024-06-06	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	10.8M	¥3,608.5	-33.3%	¥38.9B ($251.0M)
2023-11-21	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	10.8M	¥2,910.5	-17.3%	¥6.9B ($44.8M)
2023-11-21	SELL	negotiated	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	12.7M	¥2,910.5	+17.3%	¥17.5B ($113.1M)
2023-11-21	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	7.0M	¥2,910.5	-17.3%	¥20.4B ($131.7M)
2023-10-16	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	9.3M	¥3,428	+29.8%	¥2.0B ($13.2M)
2023-10-16	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	989.5K	¥3,428	-29.8%	¥3.4B ($21.9M)
2023-10-16	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	6.2M	¥3,428	-29.8%	¥1.0B ($6.6M)
2023-10-16	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	14.9M	¥3,428	-29.8%	¥50.9B ($328.5M)
2023-04-17	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	6.0M	¥3,380	-28.8%	¥10.5B ($67.6M)
2023-04-17	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	9.8M	¥3,380	+28.8%	¥21.2B ($136.5M)
2023-04-17	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	14.9M	¥3,380	-28.8%	¥50.2B ($323.9M)
2023-03-03	BUY	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	695.9K	¥3,434	-29.9%	¥2.4B ($15.4M)
2023-03-03	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	2.5M	¥3,434	-29.9%	¥8.5B ($54.5M)
2023-03-03	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	1.2M	¥3,434	-29.9%	¥4.1B ($26.5M)
2023-03-03	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	1.5M	¥3,434	-29.9%	¥5.2B ($33.3M)
2023-03-03	BUY	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	814.0K	¥3,434	-29.9%	¥2.8B ($18.0M)
2023-03-03	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	9.8M	¥3,434	-29.9%	¥33.6B ($216.8M)
2023-03-03	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	5.8M	¥3,434	-29.9%	¥19.8B ($127.5M)

Showing the 50 most recent of 59 filings.

Frequently asked questions

Who has been buying Nidec Corporation stock?: 24 distinct investors have filed 25 disclosed large-shareholding filings in Nidec Corporation (6594), most recently on 2026-05-13. 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 Nidec Corporation have?: Nidec Corporation has 25 buy-side and 18 sell-side disclosures on record, covering ¥253.0B ($1.6B) in total reported value, spanning 2022-01-07 to 2026-05-13.
Where does StockDrifts get Nidec Corporation 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 Nidec Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.