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Kensoh Co.,Ltd. 7939

Company
株式会社研創Kensoh Co.,Ltd.
Investors
5
Buys
2
Total Value
¥108M ($695K)
Avg Return
+22.98%
Last Filing
2023-12-20

Kensoh Co.,Ltd. (7939) has 2 disclosed large-shareholding filings and 0 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥108M ($695K) in reported transaction value. The earliest filing StockDrifts holds for Kensoh Co.,Ltd. is dated 2021-08-05; the most recent is 2023-12-20. 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 +22.98%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-07-16BUYMarket Buy
研創親和会 理事長 石丸朋文
Kensoh Shinwakai Rijicyou Ishimaru Tomofumi
strategic242.9K¥588+3.6%¥24M ($156K)
2023-12-20BUYunknown
研創親和会 理事長 石丸朋文
Kensoh Shinwakai Rijicyou Ishimaru Tomofumi
strategic201.8K¥518+12.6%¥105M ($674K)
2023-12-20BUYunknown
研創親和会 理事長 石丸朋文
Kensoh Shinwakai Rijicyou Ishimaru Tomofumi
strategic201.8K¥518+12.6%¥105M ($674K)
2021-10-26BUYunknown
林 大一郎
Daiichiro Hayashi
strategic67.2K¥434+34.3%¥29M ($188K)
2021-10-26BUYunknown
株式会社研創エンタープライズ
Kenso Enterprise Co., Ltd.
strategic780.7K¥434+34.3%¥339M ($2.2M)
2021-10-26BUYunknown
林 良一(相続人代表 林 大一郎)
Ryoichi Hayashi (Heir Representative Daiichiro Hayashi)
unknown0¥434+34.3%-
2021-08-05BUYunknown
林 大一郎
Daiichiro Hayashi
strategic67.1K¥437+33.4%¥3M ($20K)
2021-08-05BUYunknown
株式会社研創エンタープライズ
Kenso Enterprise Co., Ltd.
strategic780.7K¥437+33.4%¥341M ($2.2M)
2021-08-05BUYunknown
林 良一(相続人代表 林 大一郎)
Ryoichi Hayashi (Heir Representative Daiichiro Hayashi)
other53¥437+33.4%¥23K ($149)

Frequently asked questions

Who has been buying Kensoh Co.,Ltd. stock?
5 distinct investors have filed 2 disclosed large-shareholding filings in Kensoh Co.,Ltd. (7939), most recently on 2023-12-20. 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 Kensoh Co.,Ltd. have?
Kensoh Co.,Ltd. has 2 buy-side and 0 sell-side disclosures on record, covering ¥108M ($695K) in total reported value, spanning 2021-08-05 to 2023-12-20.
Where does StockDrifts get Kensoh 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 Kensoh Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.