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Eidai Co.,Ltd. 7822

Company
永大産業株式会社Eidai Co.,Ltd.
Investors
2
Buys
3
Total Value
¥117M ($753K)
Avg Return
-3.24%
Last Filing
2026-01-16

Eidai Co.,Ltd. (7822) has 3 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 2 distinct investors. Together those filings cover ¥117M ($753K) in reported transaction value. The earliest filing StockDrifts holds for Eidai Co.,Ltd. is dated 2022-07-05; the most recent is 2026-01-16. 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 -3.24%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-01-16BUYMarket Buy
永大産業取引先持株会 理事長 足立年彦
Toshihiko Adachi
strategic4.1M¥247-5.7%¥117M ($753K)
2026-01-16BUYunknown
永大産業取引先持株会 理事長 足立年彦
Toshihiko Adachi
strategic4.1M¥247-5.7%¥117M ($753K)
2023-10-27BUYMarket Buy
永大産業取引先持株会 理事長 足立年彦
Toshihiko Adachi
strategic3.6M¥217+7.4%¥106M ($681K)
2023-10-27BUYunknown
永大産業取引先持株会 理事長 足立年彦
Toshihiko Adachi
strategic3.6M¥217+7.4%¥106M ($681K)
2022-07-05BUYunknown
永大産業取引先持株会 理事長 足立年彦
Toshihiko Adachi
strategic3.2M¥263-11.4%¥832M ($5.4M)
2022-07-05SELLunknown
永大産業取引先持株会 理事長 工藤恭輔
Kyosuke Kudo
strategic0¥263+11.4%¥892M ($5.8M)
2022-07-05BUYunknown
永大産業取引先持株会 理事長 工藤恭輔
Kyosuke Kudo
unknown0¥263-11.4%¥892M ($5.8M)
2022-07-05BUYunknown
永大産業取引先持株会 理事長 足立年彦
Toshihiko Adachi
strategic3.2M¥263-11.4%¥832M ($5.4M)

Frequently asked questions

Who has been buying Eidai Co.,Ltd. stock?
2 distinct investors have filed 3 disclosed large-shareholding filings in Eidai Co.,Ltd. (7822), most recently on 2026-01-16. 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 Eidai Co.,Ltd. have?
Eidai Co.,Ltd. has 3 buy-side and 1 sell-side disclosures on record, covering ¥117M ($753K) in total reported value, spanning 2022-07-05 to 2026-01-16.
Where does StockDrifts get Eidai 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 Eidai Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.