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Konishi Co., Ltd. 4956

Company
コニシ株式会社Konishi Co., Ltd.
Investors
6
Buys
3
Total Value
¥4.6B ($29.6M)
Avg Return
+48.39%
Last Filing
2025-08-05

Konishi Co., Ltd. (4956) has 3 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥4.6B ($29.6M) in reported transaction value. The earliest filing StockDrifts holds for Konishi Co., Ltd. is dated 2022-08-30; the most recent is 2025-08-05. 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 +48.39%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2025-08-05SELLMarket Buy
アセット・バリュー・インベスターズ・リミテッド (Asset Value Investors Limited)
Asset Value Investors Limited
activist0¥1,242-10.2%¥4.4B ($28.3M)
2023-07-03SELLunknown
三菱UFJ国際投信株式会社
Mitsubishi UFJ Financial Group Inc.
passive270.1K¥1,153.5-18.7%¥9M ($61K)
2023-07-03BUYunknown
三菱UFJ信託銀行株式会社
Mitsubishi UFJ Financial Group Inc.
passive808.3K¥1,153.5+18.7%¥917M ($5.9M)
2023-07-03SELLunknown
株式会社三菱UFJ銀行
Mitsubishi UFJ Financial Group Inc.
unknown0¥1,153.5-18.7%¥521M ($3.4M)
2023-01-16BUYMarket Buy
アセット・バリュー・インベスターズ・リミテッド (Asset Value Investors Limited)
Asset Value Investors Limited
activist2.0M¥850.5+61.0%¥1.7B ($11.2M)
2022-08-30BUYunknown
コニシ共栄会 理事長 松本 將
KONISHI KYOUEIKAI RIJITYOU MTSUMOTO SYOU
strategic2.3M¥827+65.5%¥1.9B ($12.5M)
2022-08-30SELLunknown
コニシ共栄会 理事長 小黒 正義
KONISHIKYOUEIKAI RIJITYOU OGURO MASAYOSHI
unknown0¥827-65.5%¥1.9B ($12.2M)

Frequently asked questions

Who has been buying Konishi Co., Ltd. stock?
6 distinct investors have filed 3 disclosed large-shareholding filings in Konishi Co., Ltd. (4956), most recently on 2025-08-05. 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 Konishi Co., Ltd. have?
Konishi Co., Ltd. has 3 buy-side and 4 sell-side disclosures on record, covering ¥4.6B ($29.6M) in total reported value, spanning 2022-08-30 to 2025-08-05.
Where does StockDrifts get Konishi 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 Konishi Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.