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

3 distinct investors have filed 6 disclosed large-shareholding filings in Nadex Co., Ltd. (7435), most recently on 2023-01-10. 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 Nadex Co., Ltd. have?

Nadex Co., Ltd. has 6 buy-side and 2 sell-side disclosures on record, covering ¥653M ($4.2M) in total reported value, spanning 2022-12-27 to 2023-01-10.

Where does StockDrifts get Nadex 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.

Nadex Co., Ltd. 7435

Company

株式会社ナ・デックスNadex Co., Ltd.

Investors

Buys

Total Value

¥653M ($4.2M)

Avg Return

+49.71%

Last Filing

2023-01-10

Nadex Co., Ltd. (7435) has 6 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥653M ($4.2M) in reported transaction value. The earliest filing StockDrifts holds for Nadex Co., Ltd. is dated 2022-12-27; the most recent is 2023-01-10. 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 +49.71%, 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	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	920.0K	¥1,288	-5.7%	¥141M ($910K)
2026-06-22	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	784.1K	¥1,288	-5.7%	¥4M ($23K)
2026-06-22	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) Fidelity Management & Research Company LLC	corporate	920.0K	¥1,288	-5.7%	¥141M ($910K)
2026-06-22	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	132.3K	¥1,288	-5.7%	¥170M ($1.1M)
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	828.2K	¥1,288	+5.7%	¥119M ($766K)
2026-06-22	SELL	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	122.2K	¥1,288	+5.7%	¥4M ($23K)
2026-06-22	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	122.2K	¥1,288	-5.7%	¥157M ($1.0M)
2026-06-22	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	784.1K	¥1,288	-5.7%	¥1.0B ($6.5M)
2023-01-10	BUY	unknown	古川雅博 Masahiro Furukawa	other	100.0K	¥834	+50.6%	¥83M ($538K)
2023-01-10	BUY	unknown	古川雅博 Masahiro Furukawa	other	100.0K	¥834	+50.6%	¥83M ($538K)
2023-01-10	BUY	unknown	株式会社アート・ギヤラリー富士見 Art Gallery Fujimi co.,LTD.	other	1.7M	¥834	+50.6%	¥1.4B ($9.1M)
2023-01-10	BUY	unknown	株式会社アート・ギヤラリー富士見 Art Gallery Fujimi co.,LTD.	other	1.7M	¥834	+50.6%	¥1.4B ($9.1M)
2022-12-28	BUY	unknown	古川雅博 Masahiro Furukawa	other	100.0K	¥849	+47.9%	¥85M ($548K)
2022-12-28	SELL	unknown	古川美智子 Furukawa Michiko	other	0	¥849	-47.9%	¥242M ($1.6M)
2022-12-28	SELL	unknown	古川美智子 Furukawa Michiko	other	0	¥849	-47.9%	¥242M ($1.6M)
2022-12-28	BUY	unknown	株式会社アート・ギヤラリー富士見 Art Gallery Fujimi co.,LTD.	other	1.7M	¥849	+47.9%	¥243M ($1.6M)
2022-12-28	BUY	unknown	株式会社アート・ギヤラリー富士見 Art Gallery Fujimi co.,LTD.	other	1.7M	¥849	+47.9%	¥243M ($1.6M)
2022-12-27	BUY	unknown	株式会社アート・ギヤラリー富士見 Art Gallery Fujimi co.,LTD.	other	1.4M	¥847	+48.3%	¥1.2B ($7.7M)
2022-12-27	BUY	unknown	古川美智子 Furukawa Michiko	other	285.6K	¥847	+48.3%	¥242M ($1.6M)
2022-12-27	BUY	unknown	古川美智子 Furukawa Michiko	other	285.6K	¥847	+48.3%	¥242M ($1.6M)
2022-12-27	BUY	unknown	株式会社アート・ギヤラリー富士見 Art Gallery Fujimi co.,LTD.	other	1.4M	¥847	+48.3%	¥1.2B ($7.7M)

Frequently asked questions

Who has been buying Nadex Co., Ltd. stock?: 3 distinct investors have filed 6 disclosed large-shareholding filings in Nadex Co., Ltd. (7435), most recently on 2023-01-10. 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 Nadex Co., Ltd. have?: Nadex Co., Ltd. has 6 buy-side and 2 sell-side disclosures on record, covering ¥653M ($4.2M) in total reported value, spanning 2022-12-27 to 2023-01-10.
Where does StockDrifts get Nadex 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 Nadex Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.