Who has been buying Choei Inc. stock?

4 distinct investors have filed 15 disclosed large-shareholding filings in Choei Inc. (2993), most recently on 2025-08-13. 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 Choei Inc. have?

Choei Inc. has 15 buy-side and 24 sell-side disclosures on record, covering ¥6.5B ($42.3M) in total reported value, spanning 2021-12-27 to 2025-08-13.

Where does StockDrifts get Choei Inc. 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.

Choei Inc. 2993

Company

株式会社長栄Choei Inc.

Investors

Buys

Total Value

¥6.5B ($42.3M)

Avg Return

+40.48%

Last Filing

2025-08-13

Choei Inc. (2993) has 15 disclosed large-shareholding filings and 24 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥6.5B ($42.3M) in reported transaction value. The earliest filing StockDrifts holds for Choei Inc. is dated 2021-12-27; the most recent is 2025-08-13. 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 +40.48%, 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
2026-06-29	BUY	unknown	OSAフィールド株式会社	strategic	365.0K	¥2,154	+0.2%	¥786M ($5.1M)
2026-06-29	SELL	unknown	長田修	strategic	1.3M	¥2,154	-0.2%	¥520M ($3.4M)
2026-06-29	BUY	unknown	長田栄臣	activist	92.0K	¥2,154	+0.2%	¥198M ($1.3M)
2026-06-29	BUY	unknown	長田久美子	strategic	650.0K	¥2,154	+0.2%	¥1.4B ($9.0M)
2026-06-29	SELL	unknown	長田修	strategic	1.3M	¥2,154	-0.2%	¥520M ($3.4M)
2026-06-29	BUY	unknown	OSAフィールド株式会社	strategic	365.0K	¥2,154	+0.2%	¥786M ($5.1M)
2026-06-29	BUY	unknown	長田栄臣	activist	92.0K	¥2,154	+0.2%	¥198M ($1.3M)
2026-06-29	BUY	unknown	長田久美子	strategic	650.0K	¥2,154	+0.2%	¥1.4B ($9.0M)
2025-08-13	SELL	unknown	長田久美子 Kumiko Osada	strategic	650.0K	¥2,097	-17.1%	¥210M ($1.4M)
2025-08-13	BUY	unknown	OSAフィールド株式会社 OSA Field Inc.	strategic	365.0K	¥2,097	+17.1%	¥765M ($4.9M)
2025-08-13	BUY	unknown	長田栄臣 Hideomi Nagata	activist	92.0K	¥2,097	+17.1%	¥193M ($1.2M)
2025-08-13	BUY	unknown	長田修 Osamu Nagata	strategic	1.5M	¥2,097	+17.1%	¥3.2B ($20.9M)
2024-05-01	BUY	unknown	長田栄臣 Hideomi Nagata	activist	92.0K	¥2,229	+10.1%	¥205M ($1.3M)
2024-05-01	BUY	unknown	長田久美子 Kumiko Osada	strategic	750.0K	¥2,229	+10.1%	¥1.7B ($10.8M)
2024-05-01	BUY	unknown	OSAフィールド株式会社 OSA Field Inc.	strategic	365.0K	¥2,229	+10.1%	¥814M ($5.2M)
2024-05-01	BUY	unknown	長田修 Osamu Nagata	strategic	1.5M	¥2,229	+10.1%	¥3.4B ($22.2M)
2024-05-01	BUY	unknown	長田栄臣 Hideomi Nagata	activist	92.0K	¥2,229	+10.1%	¥205M ($1.3M)
2024-05-01	BUY	unknown	長田久美子 Kumiko Osada	strategic	750.0K	¥2,229	+10.1%	¥1.7B ($10.8M)
2024-05-01	BUY	unknown	長田修 Osamu Nagata	strategic	1.5M	¥2,229	+10.1%	¥3.4B ($22.2M)
2024-05-01	BUY	unknown	OSAフィールド株式会社 OSA Field Inc.	strategic	365.0K	¥2,229	+10.1%	¥814M ($5.2M)
2024-04-16	BUY	unknown	長田栄臣 Hideomi Nagata	activist	92.0K	¥2,202	+11.5%	¥203M ($1.3M)
2024-04-16	BUY	unknown	OSAフィールド株式会社 OSA Field Inc.	strategic	365.0K	¥2,202	+11.5%	¥804M ($5.2M)
2024-04-16	BUY	unknown	長田栄臣 Hideomi Nagata	activist	92.0K	¥2,202	+11.5%	¥203M ($1.3M)
2024-04-16	SELL	unknown	長田久美子 Kumiko Osada	strategic	750.0K	¥2,202	-11.5%	¥109M ($705K)
2024-04-16	BUY	unknown	長田修 Osamu Nagata	strategic	1.5M	¥2,202	+11.5%	¥3.4B ($21.9M)
2024-04-16	SELL	unknown	長田久美子 Kumiko Osada	strategic	750.0K	¥2,202	-11.5%	¥109M ($705K)
2024-04-16	BUY	unknown	OSAフィールド株式会社 OSA Field Inc.	strategic	365.0K	¥2,202	+11.5%	¥804M ($5.2M)
2024-04-16	BUY	unknown	長田修 Osamu Nagata	strategic	1.5M	¥2,202	+11.5%	¥3.4B ($21.9M)
2024-02-16	BUY	unknown	長田久美子 Kumiko Osada	strategic	800.0K	¥2,150	+14.2%	¥1.7B ($11.1M)
2024-02-16	BUY	unknown	長田栄臣 Hideomi Nagata	activist	92.0K	¥2,150	+14.2%	¥198M ($1.3M)
2024-02-16	BUY	unknown	長田久美子 Kumiko Osada	strategic	800.0K	¥2,150	+14.2%	¥1.7B ($11.1M)
2024-02-16	BUY	unknown	長田修 Osamu Nagata	strategic	1.5M	¥2,150	+14.2%	¥3.3B ($21.4M)
2024-02-16	BUY	unknown	長田栄臣 Hideomi Nagata	activist	92.0K	¥2,150	+14.2%	¥198M ($1.3M)
2024-02-16	BUY	unknown	長田久美子 Kumiko Osada	strategic	800.0K	¥2,150	+14.2%	¥1.7B ($11.1M)
2024-02-16	BUY	unknown	長田修 Osamu Nagata	strategic	1.5M	¥2,150	+14.2%	¥3.3B ($21.4M)
2024-02-16	BUY	unknown	長田栄臣 Hideomi Nagata	activist	92.0K	¥2,150	+14.2%	¥198M ($1.3M)
2024-02-16	BUY	unknown	長田修 Osamu Nagata	strategic	1.5M	¥2,150	+14.2%	¥3.3B ($21.4M)
2024-02-16	BUY	unknown	OSAフィールド株式会社 OSA Field Inc.	strategic	365.0K	¥2,150	+14.2%	¥785M ($5.1M)
2024-02-16	BUY	unknown	OSAフィールド株式会社 OSA Field Inc.	strategic	365.0K	¥2,150	+14.2%	¥785M ($5.1M)
2024-02-16	BUY	unknown	OSAフィールド株式会社 OSA Field Inc.	strategic	365.0K	¥2,150	+14.2%	¥785M ($5.1M)
2024-01-23	SELL	unknown	長田久美子 Kumiko Osada	strategic	800.0K	¥2,168	-13.2%	¥261M ($1.7M)
2024-01-23	SELL	unknown	長田久美子 Kumiko Osada	strategic	800.0K	¥2,168	-13.2%	¥261M ($1.7M)
2024-01-23	SELL	unknown	長田修 Osamu Nagata	strategic	1.5M	¥2,168	-13.2%	¥216M ($1.4M)
2024-01-23	BUY	unknown	長田修 Osamu Nagata	unknown	1.5M	¥2,168	+13.2%	¥3.3B ($21.6M)
2024-01-23	BUY	unknown	OSAフィールド株式会社 OSA Field Inc.	unknown	365.0K	¥2,168	+13.2%	¥791M ($5.1M)
2024-01-23	BUY	unknown	長田栄臣 Hideomi Nagata	activist	92.0K	¥2,168	+13.2%	¥22M ($144K)
2024-01-23	SELL	unknown	長田久美子 Kumiko Osada	strategic	800.0K	¥2,168	-13.2%	¥261M ($1.7M)
2024-01-23	SELL	unknown	長田修 Osamu Nagata	strategic	1.5M	¥2,168	-13.2%	¥216M ($1.4M)
2024-01-23	BUY	unknown	長田栄臣 Hideomi Nagata	activist	92.0K	¥2,168	+13.2%	¥22M ($144K)
2024-01-23	BUY	unknown	長田栄臣 Hideomi Nagata	activist	92.0K	¥2,168	+13.2%	¥22M ($144K)

Showing the 50 most recent of 93 filings.

Frequently asked questions

Who has been buying Choei Inc. stock?: 4 distinct investors have filed 15 disclosed large-shareholding filings in Choei Inc. (2993), most recently on 2025-08-13. 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 Choei Inc. have?: Choei Inc. has 15 buy-side and 24 sell-side disclosures on record, covering ¥6.5B ($42.3M) in total reported value, spanning 2021-12-27 to 2025-08-13.
Where does StockDrifts get Choei Inc. 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 Choei Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.