Who has been buying NSK Ltd. stock?

12 distinct investors have filed 24 disclosed large-shareholding filings in NSK Ltd. (6471), most recently on 2026-04-22. 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 NSK Ltd. have?

NSK Ltd. has 24 buy-side and 19 sell-side disclosures on record, covering ¥59.3B ($382.3M) in total reported value, spanning 2021-09-06 to 2026-04-22.

Where does StockDrifts get NSK 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.

NSK Ltd. 6471

Company

日本精工株式会社NSK Ltd.

Investors

Buys

Total Value

¥59.3B ($382.3M)

Avg Return

+53.79%

Last Filing

2026-04-22

NSK Ltd. (6471) has 24 disclosed large-shareholding filings and 19 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥59.3B ($382.3M) in reported transaction value. The earliest filing StockDrifts holds for NSK Ltd. is dated 2021-09-06; the most recent is 2026-04-22. 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 +53.79%, 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
2026-08-07	SELL	unknown	野村證券株式会社	other	1.2M	¥1,173.5	-0.1%	¥117M ($757K)
2026-08-07	SELL	unknown	野村アセットマネジメント株式会社	other	23.4M	¥1,173.5	-0.1%	¥6.2B ($40.1M)
2026-08-07	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.8M	¥1,173.5	-0.1%	¥59M ($379K)
2026-08-07	SELL	unknown	アセットマネジメントOne株式会社	other	8.7M	¥1,173.5	-0.1%	¥5.9B ($37.9M)
2026-08-07	BUY	Market Buy	みずほ信託銀行株式会社	other	8.8M	¥1,173.5	+0.1%	¥4.6B ($29.5M)
2026-08-07	BUY	unknown	みずほ証券株式会社	other	3.3M	¥1,173.5	+0.1%	¥3.9B ($25.1M)
2026-08-07	SELL	unknown	株式会社みずほ銀行	strategic	13.7M	¥1,173.5	-0.1%	¥3.3B ($21.6M)
2026-04-22	BUY	Market Buy	野村アセットマネジメント株式会社	other	28.7M	¥1,206	-1.6%	¥5.7B ($36.6M)
2026-04-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	1.9M	¥1,206	+1.6%	¥784M ($5.1M)
2026-04-22	BUY	unknown	野村證券株式会社	other	1.3M	¥1,206	-1.6%	¥1.5B ($10.0M)
2025-09-19	BUY	Market Buy	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	17.9M	¥787.9	+56.6%	¥906M ($5.8M)
2025-09-19	SELL	Market Buy	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	10.0M	¥787.9	-56.6%	¥394M ($2.5M)
2025-01-10	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	24.0M	¥665.1	+85.5%	¥16.0B ($103.1M)
2025-01-10	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	2.5M	¥665.1	+85.5%	¥1.6B ($10.6M)
2024-04-30	SELL	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	478.6K	¥868.1	-42.1%	¥43M ($280K)
2024-04-30	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	7.2M	¥868.1	-42.1%	¥217M ($1.4M)
2024-04-30	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	187.7K	¥868.1	-42.1%	¥6.4B ($41.4M)
2024-04-30	SELL	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	478.6K	¥809.378	-44.0%	¥387M ($2.5M)
2024-04-30	SELL	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	478.6K	¥809.378	-44.0%	¥387M ($2.5M)
2024-04-30	SELL	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	478.6K	¥868.1	-42.1%	¥43M ($280K)
2024-04-30	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	6.8M	¥868.1	+42.1%	¥5.9B ($38.1M)
2024-04-30	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	4.8M	¥868.1	+42.1%	¥4.2B ($26.9M)
2024-04-30	SELL	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	478.6K	¥809.378	-44.0%	¥387M ($2.5M)
2024-03-18	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	570.4K	¥733.533	+58.9%	¥418M ($2.7M)
2024-03-18	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	570.4K	¥733.533	+58.9%	¥418M ($2.7M)
2024-03-18	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	570.4K	¥832.9	+48.1%	¥475M ($3.1M)
2024-03-18	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	7.6M	¥832.9	+48.1%	¥6.3B ($40.9M)
2024-03-18	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	6.8M	¥832.9	+48.1%	¥5.7B ($36.5M)
2024-03-18	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	7.5M	¥832.9	+48.1%	¥6.2B ($40.0M)
2024-03-18	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	4.8M	¥832.9	+48.1%	¥4.0B ($25.9M)
2024-03-18	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	570.4K	¥832.9	+48.1%	¥475M ($3.1M)
2024-03-18	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	570.4K	¥733.533	+58.9%	¥418M ($2.7M)
2023-09-06	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	16.8M	¥874.2	+41.1%	¥14.7B ($94.8M)
2023-09-06	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	10.4M	¥874.2	+41.1%	¥9.1B ($58.9M)
2023-07-06	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	16.7M	¥906.7	-36.0%	¥1.1B ($7.1M)
2023-07-06	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	10.5M	¥906.7	-36.0%	¥4.5B ($29.0M)
2022-11-21	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	2.0M	¥769	-60.4%	¥4.4B ($28.4M)
2022-11-21	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	7.3M	¥769	-60.4%	¥8.6B ($55.5M)
2022-11-21	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	6.4M	¥769	+60.4%	¥4.9B ($31.8M)
2022-11-21	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	5.0M	¥769	+60.4%	¥1.6B ($10.4M)
2022-11-08	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	244.4K	¥784	+57.3%	¥4.3B ($27.9M)
2022-11-08	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	21.4M	¥784	+57.3%	¥16.6B ($106.8M)
2022-11-08	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	980.0K	¥784	-57.3%	¥3.5B ($22.9M)
2022-10-03	SELL	negotiated	エム・ユー投資顧問株式会社 M.U. Investment Advisors Co., Ltd.	unknown	0	¥720	-71.3%	¥675M ($4.4M)
2022-10-03	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	7.7M	¥720	+71.3%	¥5.5B ($35.7M)
2022-10-03	SELL	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	2.9M	¥720	-71.3%	¥1.3B ($8.5M)
2022-10-03	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	18.5M	¥720	-71.3%	¥2.3B ($14.9M)
2022-10-03	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	6.4M	¥720	+71.3%	¥4.6B ($29.8M)
2022-01-20	BUY	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	17.9M	¥785	+57.1%	¥87M ($558K)
2022-01-20	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 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	15.4M	¥785	+57.1%	¥130M ($838K)

Showing the 50 most recent of 56 filings.

Frequently asked questions

Who has been buying NSK Ltd. stock?: 12 distinct investors have filed 24 disclosed large-shareholding filings in NSK Ltd. (6471), most recently on 2026-04-22. 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 NSK Ltd. have?: NSK Ltd. has 24 buy-side and 19 sell-side disclosures on record, covering ¥59.3B ($382.3M) in total reported value, spanning 2021-09-06 to 2026-04-22.
Where does StockDrifts get NSK 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 NSK Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.