Who has been buying Chofu Seisakusho Co., Ltd. stock?

1 distinct investors have filed 0 disclosed large-shareholding filings in Chofu Seisakusho Co., Ltd. (5946), most recently on 2026-04-21. 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 Chofu Seisakusho Co., Ltd. have?

Chofu Seisakusho Co., Ltd. has 0 buy-side and 12 sell-side disclosures on record, spanning 2024-07-03 to 2026-04-21.

Where does StockDrifts get Chofu Seisakusho 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.

Chofu Seisakusho Co., Ltd. 5946

Company

株式会社長府製作所Chofu Seisakusho Co., Ltd.

Investors

Buys

Total Value

—

Avg Return

—

Last Filing

2026-04-21

Chofu Seisakusho Co., Ltd. (5946) has 0 disclosed large-shareholding filings and 12 disclosed disposals on record, filed by 1 distinct investors. The earliest filing StockDrifts holds for Chofu Seisakusho Co., Ltd. is dated 2024-07-03; the most recent is 2026-04-21. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan).

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-07-17	BUY	Market Buy	Be Brave株式会社代表取締役泉田和人 Be Brave Inc	activist	1.9M	¥1,995	+3.1%	¥3.8B ($24.6M)
2026-04-21	SELL	unknown	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	1.5M	¥2,007	+0.7%	¥708M ($4.6M)
2026-03-18	SELL	unknown	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	1.9M	¥2,055	+2.5%	¥732M ($4.7M)
2026-03-04	SELL	unknown	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	2.2M	¥2,126	+5.7%	¥1.0B ($6.5M)
2026-01-21	SELL	unknown	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	2.7M	¥2,003	-0.1%	¥816M ($5.3M)
2025-12-08	SELL	unknown	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	3.1M	¥2,025	+1.0%	¥714M ($4.6M)
2025-11-18	SELL	unknown	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	3.5M	¥1,950	-2.8%	¥674M ($4.4M)
2025-08-07	SELL	unknown	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	3.8M	¥1,981	-1.2%	¥685M ($4.4M)
2025-08-07	SELL	unknown	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	3.8M	¥1,981	-1.2%	¥685M ($4.4M)
2025-07-17	SELL	unknown	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	4.2M	¥1,973	-1.6%	¥696M ($4.5M)
2025-06-06	SELL	unknown	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	4.5M	¥1,830	-9.5%	¥645M ($4.2M)
2024-09-25	SELL	unknown	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	4.9M	¥2,000	-0.2%	¥698M ($4.5M)
2024-07-03	SELL	unknown	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	5.2M	¥2,186	+8.3%	¥748M ($4.8M)

Frequently asked questions

Who has been buying Chofu Seisakusho Co., Ltd. stock?: 1 distinct investors have filed 0 disclosed large-shareholding filings in Chofu Seisakusho Co., Ltd. (5946), most recently on 2026-04-21. 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 Chofu Seisakusho Co., Ltd. have?: Chofu Seisakusho Co., Ltd. has 0 buy-side and 12 sell-side disclosures on record, spanning 2024-07-03 to 2026-04-21.
Where does StockDrifts get Chofu Seisakusho 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 Chofu Seisakusho Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.