Who has been buying Nagaileben Co., Ltd. stock?

10 distinct investors have filed 23 disclosed large-shareholding filings in Nagaileben Co., Ltd. (7447), most recently on 2025-12-25. 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 Nagaileben Co., Ltd. have?

Nagaileben Co., Ltd. has 23 buy-side and 4 sell-side disclosures on record, covering ¥2.8B ($17.8M) in total reported value, spanning 2022-04-26 to 2025-12-25.

Where does StockDrifts get Nagaileben 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.

Nagaileben Co., Ltd. 7447

Company

ナガイレーベン株式会社Nagaileben Co., Ltd.

Investors

Buys

Total Value

¥2.8B ($17.8M)

Avg Return

-7.95%

Last Filing

2025-12-25

Nagaileben Co., Ltd. (7447) has 23 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥2.8B ($17.8M) in reported transaction value. The earliest filing StockDrifts holds for Nagaileben Co., Ltd. is dated 2022-04-26; the most recent is 2025-12-25. 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 -7.95%, 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
2026-07-23	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	64.3K	¥1,749	+3.0%	¥11M ($69K)
2026-07-23	BUY	unknown	エフエムアールインベストメントマネジメントユーケーリミテッドLimited) FMR Investment Management (UK	other	2.2M	¥1,749	+3.0%	¥3.9B ($24.9M)
2026-07-23	SELL	unknown	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	349.3K	¥1,749	-3.0%	¥102M ($659K)
2026-07-23	SELL	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	55.8K	¥1,749	-3.0%	¥4.1B ($26.4M)
2026-06-18	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.6M	¥1,622	+8.0%	¥626M ($4.0M)
2026-06-18	SELL	unknown	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	273.8K	¥1,622	-8.0%	¥633M ($4.1M)
2026-06-18	SELL	unknown	エフアイエーエムエルエルシー FIAM LLC	other	62.9K	¥1,622	-8.0%	¥434M ($2.8M)
2026-06-18	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	2.3M	¥1,622	+8.0%	¥440M ($2.8M)
2026-06-18	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	475.6K	¥1,622	+8.0%	¥354M ($2.3M)
2026-06-18	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	123.4K	¥1,622	+8.0%	¥110M ($711K)
2026-06-18	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	2.2M	¥1,622	+8.0%	¥122M ($785K)
2026-06-18	SELL	unknown	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	415.6K	¥1,622	-8.0%	¥99M ($636K)
2026-06-18	SELL	unknown	エフアイエーエムエルエルシー FIAM LLC	other	55.5K	¥1,622	-8.0%	¥110M ($711K)
2026-06-18	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	2.4M	¥1,622	+8.0%	¥296M ($1.9M)
2026-06-18	BUY	unknown	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	413.4K	¥1,622	+8.0%	¥671M ($4.3M)
2026-06-18	BUY	unknown	エフアイエーエムエルエルシー FIAM LLC	other	57.0K	¥1,622	+8.0%	¥92M ($597K)
2026-06-18	BUY	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	2.4M	¥1,622	+8.0%	¥3.9B ($24.8M)
2026-06-18	BUY	Market Buy	フィデリティインスティテューショナルアセットマネジメントトラストカンパニー Fidelity Institutional Asset Management Trust Company	other	407.7K	¥1,622	+8.0%	¥85M ($547K)
2026-06-18	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	58.4K	¥1,622	+8.0%	¥15M ($96K)
2026-06-18	BUY	Market Buy	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	2.4M	¥1,622	+8.0%	¥568M ($3.7M)
2025-12-25	BUY	Market Buy	澤登一郎	activist	5.8M	¥1,908	-6.3%	¥10.4B ($67.3M)
2025-12-25	BUY	Market Buy	有限会社登龍	strategic	1.5M	¥1,908	-6.3%	¥2.6B ($16.8M)
2025-12-25	BUY	Market Buy	澤登孝平	strategic	28.0K	¥1,908	-6.3%	¥50M ($323K)
2025-12-25	BUY	Market Buy	澤登慎平	strategic	105.7K	¥1,908	-6.3%	¥189M ($1.2M)
2025-12-25	BUY	Market Buy	澤登知嘉子	activist	180.4K	¥1,908	-6.3%	¥323M ($2.1M)
2025-12-05	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.9M	¥1,867	-4.2%	¥769M ($5.0M)
2025-12-04	BUY	Market Buy	ファースト・イーグル・インベストメント・マネジメント・エルエルシー(First Eagle Investment Management, LLC) First Eagle Investment Management, LLC	other	2.1M	¥1,878	-4.8%	¥912M ($5.9M)
2025-09-22	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.8M	¥2,033	-12.1%	¥5.8B ($37.3M)
2025-09-05	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.8M	¥2,019	-11.4%	¥108M ($698K)
2023-01-11	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	2.8M	¥1,894	-5.6%	¥684M ($4.4M)
2022-10-27	BUY	Market Buy	澤登孝平 Kohei Sawanobori	strategic	28.0K	¥1,997	-10.5%	¥714M ($4.6M)
2022-10-27	BUY	Market Buy	有限会社登龍 Toryu Co., Ltd.	strategic	1.5M	¥1,997	-10.5%	¥186M ($1.2M)
2022-10-27	BUY	Market Buy	澤登孝平 Kohei Sawanobori	strategic	28.0K	¥1,997	-10.5%	¥714M ($4.6M)
2022-10-27	BUY	Market Buy	澤登慎平 Shinpei Sawanobori	strategic	105.6K	¥1,997	-10.5%	¥14M ($92K)
2022-10-27	BUY	Market Buy	澤登知嘉子 Chikako Sawanobori	activist	180.4K	¥1,997	-10.5%	¥21M ($138K)
2022-10-27	BUY	Market Buy	有限会社登龍 Toryu Co., Ltd.	strategic	1.5M	¥1,997	-10.5%	¥186M ($1.2M)
2022-10-27	BUY	Market Buy	澤登慎平 Shinpei Sawanobori	strategic	105.6K	¥1,997	-10.5%	¥14M ($92K)
2022-10-27	BUY	Market Buy	澤登知嘉子 Chikako Sawanobori	activist	180.4K	¥1,997	-10.5%	¥21M ($138K)
2022-10-27	BUY	Market Buy	澤登一郎 Ichiro Sawanobori	activist	5.8M	¥1,997	-10.5%	¥764M ($4.9M)
2022-10-27	BUY	Market Buy	澤登一郎 Ichiro Sawanobori	activist	5.8M	¥1,997	-10.5%	¥764M ($4.9M)
2022-04-26	BUY	Market Buy	有限会社登龍 Toryu Co., Ltd.	strategic	1.5M	¥1,885	-5.2%	¥468M ($3.0M)
2022-04-26	BUY	Market Buy	澤登孝平 Kohei Sawanobori	strategic	28.0K	¥1,885	-5.2%	¥53M ($341K)
2022-04-26	BUY	Market Buy	澤登慎平 Shinpei Sawanobori	strategic	105.6K	¥1,885	-5.2%	¥199M ($1.3M)
2022-04-26	BUY	Market Buy	澤登知嘉子 Chikako Sawanobori	activist	180.4K	¥1,885	-5.2%	¥340M ($2.2M)
2022-04-26	SELL	unknown	株式会社安立 Anritsu Co., Ltd.	strategic	507.3K	¥1,885	+5.2%	¥454M ($2.9M)
2022-04-26	BUY	unknown	澤登春江 Harue Sawanobori	strategic	623.6K	¥1,885	-5.2%	¥1.2B ($7.6M)
2022-04-26	BUY	Market Buy	有限会社登龍 Toryu Co., Ltd.	unknown	1.5M	¥1,885	-5.2%	¥468M ($3.0M)
2022-04-26	BUY	Market Buy	澤登孝平 Kohei Sawanobori	unknown	28.0K	¥1,885	-5.2%	¥53M ($341K)
2022-04-26	BUY	Market Buy	澤登慎平 Shinpei Sawanobori	unknown	105.6K	¥1,885	-5.2%	¥199M ($1.3M)
2022-04-26	SELL	unknown	株式会社安立 Anritsu Co., Ltd.	unknown	507.3K	¥1,885	+5.2%	¥454M ($2.9M)

Showing the 50 most recent of 54 filings.

Frequently asked questions

Who has been buying Nagaileben Co., Ltd. stock?: 10 distinct investors have filed 23 disclosed large-shareholding filings in Nagaileben Co., Ltd. (7447), most recently on 2025-12-25. 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 Nagaileben Co., Ltd. have?: Nagaileben Co., Ltd. has 23 buy-side and 4 sell-side disclosures on record, covering ¥2.8B ($17.8M) in total reported value, spanning 2022-04-26 to 2025-12-25.
Where does StockDrifts get Nagaileben 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 Nagaileben Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.