Who has been buying Ecomic Co., Ltd stock?

3 distinct investors have filed 1 disclosed large-shareholding filings in Ecomic Co., Ltd (3802), most recently on 2026-03-13. 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 Ecomic Co., Ltd have?

Ecomic Co., Ltd has 1 buy-side and 10 sell-side disclosures on record, covering ¥132M ($850K) in total reported value, spanning 2024-03-11 to 2026-03-13.

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.

Ecomic Co., Ltd 3802

Company

株式会社エコミックEcomic Co., Ltd

Investors

Buys

Total Value

¥132M ($850K)

Avg Return

-2.08%

Last Filing

2026-03-13

Ecomic Co., Ltd (3802) has 1 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥132M ($850K) in reported transaction value. The earliest filing StockDrifts holds for Ecomic Co., Ltd is dated 2024-03-11; the most recent is 2026-03-13. Across these filings the average return since disclosure is -2.08%, 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
2026-03-13	BUY	unknown	キャリアバンク株式会社	other	120.8K	¥483	-	-
2026-03-13	SELL	unknown	佐藤良雄(相続人代表佐藤佳寿子)	other	0	¥483	-4.5%	¥125M ($807K)
2026-03-04	SELL	unknown	キャリアバンク株式会社	other	0	¥484	-4.3%	¥58M ($377K)
2026-03-04	BUY	unknown	佐藤良雄(相続人代表佐藤佳寿子)	other	259.2K	¥484	-	-
2026-03-04	SELL	unknown	キャリアバンク株式会社	other	0	¥484	-4.3%	¥58M ($377K)
2026-03-04	BUY	unknown	佐藤良雄(相続人代表佐藤佳寿子)	other	259.2K	¥484	-	-
2026-02-12	BUY	unknown	熊谷浩二 KOJI KUMAGAI	activist	274.4K	¥480	+5.2%	¥132M ($850K)
2026-02-04	SELL	unknown	キャリアバンク株式会社 CAREER BANK CO.,LTD	other	380.0K	¥471	-7.2%	¥716M ($4.6M)
2025-12-10	SELL	unknown	佐藤良雄(相続人代表佐藤佳寿子)	other	259.2K	¥459	-10.0%	¥27M ($174K)
2025-12-10	SELL	unknown	キャリアバンク株式会社	other	1.6M	¥459	-10.0%	¥170M ($1.1M)
2025-12-10	SELL	unknown	佐藤良雄(相続人代表佐藤佳寿子)	other	259.2K	¥459	-10.0%	¥27M ($174K)
2025-12-10	SELL	unknown	キャリアバンク株式会社	other	1.6M	¥459	-10.0%	¥170M ($1.1M)
2024-03-11	SELL	unknown	キャリアバンク株式会社 CAREER BANK CO.,LTD	other	1.6M	¥486	-3.9%	¥15M ($95K)
2024-03-11	SELL	unknown	佐藤良雄 Yoshio Sato	other	259.2K	¥486	-3.9%	¥2M ($14K)

Frequently asked questions

Who has been buying Ecomic Co., Ltd stock?: 3 distinct investors have filed 1 disclosed large-shareholding filings in Ecomic Co., Ltd (3802), most recently on 2026-03-13. 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 Ecomic Co., Ltd have?: Ecomic Co., Ltd has 1 buy-side and 10 sell-side disclosures on record, covering ¥132M ($850K) in total reported value, spanning 2024-03-11 to 2026-03-13.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.