Who has been buying Nihon Dengi Co., Ltd. stock?

4 distinct investors have filed 5 disclosed large-shareholding filings in Nihon Dengi Co., Ltd. (1723), most recently on 2026-03-23. 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 Nihon Dengi Co., Ltd. have?

Nihon Dengi Co., Ltd. has 5 buy-side and 0 sell-side disclosures on record, covering ¥162M ($1.0M) in total reported value, spanning 2021-07-07 to 2026-03-23.

Where does StockDrifts get Nihon Dengi 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.

Nihon Dengi Co., Ltd. 1723

Company

日本電技株式会社Nihon Dengi Co., Ltd.

Investors

Buys

Total Value

¥162M ($1.0M)

Avg Return

+335.24%

Last Filing

2026-03-23

Nihon Dengi Co., Ltd. (1723) has 5 disclosed large-shareholding filings and 0 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥162M ($1.0M) in reported transaction value. The earliest filing StockDrifts holds for Nihon Dengi Co., Ltd. is dated 2021-07-07; the most recent is 2026-03-23. 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 +335.24%, 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
2026-06-22	BUY	unknown	エフアイエーエムエルエルシー FIAM LLC	other	1.6M	¥2,301	-10.0%	¥3.8B ($24.5M)
2026-06-22	BUY	Market Buy	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	435.6K	¥2,301	-10.0%	¥15M ($97K)
2026-06-22	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	3.5M	¥2,301	+10.0%	¥1.5B ($9.8M)
2026-06-18	SELL	unknown	エフアイエーエムエルエルシー FIAM LLC	other	179.8K	¥2,349	+11.8%	¥218M ($1.4M)
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	599.4K	¥2,349	-11.8%	¥266M ($1.7M)
2026-06-18	BUY	unknown	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	45.2K	¥2,349	-11.8%	¥106M ($685K)
2026-06-18	SELL	unknown	エフアイエーエムエルエルシー FIAM LLC	other	128.2K	¥2,349	+11.8%	¥121M ($783K)
2026-06-18	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	509.5K	¥2,349	+11.8%	¥210M ($1.4M)
2026-06-18	BUY	Market Buy	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	48.5K	¥2,349	-11.8%	¥8M ($50K)
2026-06-18	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	219.6K	¥2,349	-11.8%	¥216M ($1.4M)
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	551.6K	¥2,349	-11.8%	¥98M ($634K)
2026-06-18	BUY	Market Buy	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	106.3K	¥2,349	-11.8%	¥23M ($149K)
2026-06-18	SELL	unknown	エフアイエーエムエルエルシー FIAM LLC	other	411.6K	¥2,349	+11.8%	¥65M ($422K)
2026-06-18	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	1.0M	¥2,349	+11.8%	¥169M ($1.1M)
2026-06-10	BUY	Market Buy	エフアイエーエムエルエルシー FIAM LLC	other	271.8K	¥2,209	+4.8%	¥181M ($1.2M)
2026-06-10	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	486.1K	¥2,209	+4.8%	¥67M ($432K)
2026-03-23	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	1.5M	¥2,370	+6.0%	¥78M ($501K)
2023-06-22	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	80.0K	¥531.88	+372.1%	¥43M ($275K)
2023-06-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	345.0K	¥531.88	+372.1%	¥183M ($1.2M)
2023-02-01	BUY	Market Buy	島田良介 Shimada Ryosuke	activist	521.3K	¥402.5	+523.9%	¥42M ($270K)
2021-07-07	BUY	Market Buy	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	757.9K	¥500	+402.2%	¥56M ($362K)

Frequently asked questions

Who has been buying Nihon Dengi Co., Ltd. stock?: 4 distinct investors have filed 5 disclosed large-shareholding filings in Nihon Dengi Co., Ltd. (1723), most recently on 2026-03-23. 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 Nihon Dengi Co., Ltd. have?: Nihon Dengi Co., Ltd. has 5 buy-side and 0 sell-side disclosures on record, covering ¥162M ($1.0M) in total reported value, spanning 2021-07-07 to 2026-03-23.
Where does StockDrifts get Nihon Dengi 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 Nihon Dengi Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.