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

4 distinct investors have filed 4 disclosed large-shareholding filings in Edia Co., Ltd. (3935), most recently on 2026-02-04. 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 Edia Co., Ltd. have?

Edia Co., Ltd. has 4 buy-side and 3 sell-side disclosures on record, covering ¥404M ($2.6M) in total reported value, spanning 2021-12-06 to 2026-02-04.

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.

Edia Co., Ltd. 3935

Company

株式会社エディアEdia Co., Ltd.

Investors

Buys

Total Value

¥404M ($2.6M)

Avg Return

+4.87%

Last Filing

2026-02-04

Edia Co., Ltd. (3935) has 4 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥404M ($2.6M) in reported transaction value. The earliest filing StockDrifts holds for Edia Co., Ltd. is dated 2021-12-06; the most recent is 2026-02-04. Across these filings the average return since disclosure is +4.87%, 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
2026-02-04	BUY	unknown	原尾　正紀 MASANORI HARAO	strategic	971.2K	¥729	-	-
2026-01-21	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	300.8K	¥767	+2.5%	¥48M ($310K)
2025-12-19	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	363.4K	¥931	+19.7%	¥65M ($421K)
2025-10-21	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	433.5K	¥890	-16.0%	¥52M ($335K)
2025-08-22	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	375.2K	¥1,157	-35.4%	¥56M ($361K)
2025-08-21	SELL	unknown	原尾正紀 Masaki Harao	strategic	958.4K	¥1,090	+31.4%	¥68M ($440K)
2025-08-21	BUY	unknown	原尾麻里子 Mariko Harao	strategic	12.8K	¥1,090	-	-
2025-06-05	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	326.6K	¥675	+10.8%	¥220M ($1.4M)
2024-05-30	BUY	unknown	賀島義成 yoshinari kashima	strategic	890.8K	¥332	-	-
2024-05-30	BUY	unknown	賀島義成 yoshinari kashima	strategic	890.8K	¥332	-	-
2021-12-06	BUY	unknown	賀島義成 yoshinari kashima	strategic	890.8K	¥395	+89.4%	¥352M ($2.3M)

Frequently asked questions

Who has been buying Edia Co., Ltd. stock?: 4 distinct investors have filed 4 disclosed large-shareholding filings in Edia Co., Ltd. (3935), most recently on 2026-02-04. 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 Edia Co., Ltd. have?: Edia Co., Ltd. has 4 buy-side and 3 sell-side disclosures on record, covering ¥404M ($2.6M) in total reported value, spanning 2021-12-06 to 2026-02-04.
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.