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Seki Co., Ltd. 7857

Company
セキ株式会社Seki Co., Ltd.
Investors
6
Buys
6
Total Value
¥2.2B ($14.2M)
Avg Return
+2.61%
Last Filing
2023-08-22

Seki Co., Ltd. (7857) has 6 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥2.2B ($14.2M) in reported transaction value. The earliest filing StockDrifts holds for Seki Co., Ltd. is dated 2022-12-19; the most recent is 2023-08-22. 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 +2.61%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2023-08-22BUYunknown
公益財団法人関奉仕財団
SEKI VOLUNTEER FOUNDATION
other268.6K¥1,320+6.1%¥355M ($2.3M)
2023-07-03SELLunknown
關 宏成(相続人代表 關 啓三)
Hiroshige Seki
other0¥1,335-4.9%¥630M ($4.1M)
2023-07-03BUYunknown
關 宏成(相続人代表 關 啓三)
Hiroshige Seki
other472.0K¥1,335+4.9%¥622M ($4.0M)
2023-07-03BUYunknown
關 啓三
Keizo Seki
activist862.8K¥1,335+4.9%¥1.1B ($7.3M)
2023-07-03BUYunknown
公益財団法人関奉仕財団
SEKI VOLUNTEER FOUNDATION
other268.6K¥1,335+4.9%¥359M ($2.3M)
2023-07-03BUYunknown
公益財団法人関奉仕財団
SEKI VOLUNTEER FOUNDATION
other268.6K¥1,335+4.9%¥359M ($2.3M)
2023-07-03BUYunknown
關 啓三
Keizo Seki
activist965.2K¥1,335+4.9%¥1.3B ($8.3M)
2023-07-03SELLunknown
關 淑子
Yoshiko Seki
other60.7K¥1,335-4.9%¥1M ($8K)
2023-07-03BUYunknown
關 淑子
Yoshiko Seki
strategic61.9K¥1,335+4.9%¥83M ($533K)
2023-07-03SELLunknown
關 千種子
Chitane Seki
other0¥1,335-4.9%¥78M ($505K)
2022-12-19BUYnegotiated
いよぎんリース株式会社
Iyogin Lease Co., Ltd.
strategic57.0K¥1,436-2.5%¥82M ($528K)
2022-12-19BUYnegotiated
株式会社伊予銀行
The Iyo Bank, Ltd.
strategic208.0K¥1,436-2.5%¥299M ($1.9M)

Frequently asked questions

Who has been buying Seki Co., Ltd. stock?
6 distinct investors have filed 6 disclosed large-shareholding filings in Seki Co., Ltd. (7857), most recently on 2023-08-22. 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 Seki Co., Ltd. have?
Seki Co., Ltd. has 6 buy-side and 3 sell-side disclosures on record, covering ¥2.2B ($14.2M) in total reported value, spanning 2022-12-19 to 2023-08-22.
Where does StockDrifts get Seki 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 Seki Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.