StockDrifts LogoStockDrifts

CMK Corporation 6958

Company
日本シイエムケイ株式会社CMK Corporation
Investors
18
Buys
52
Total Value
¥17.4B ($112.4M)
Avg Return
+16.69%
Last Filing
2026-05-11

CMK Corporation (6958) has 52 disclosed large-shareholding filings and 62 disclosed disposals on record, filed by 18 distinct investors. Together those filings cover ¥17.4B ($112.4M) in reported transaction value. The earliest filing StockDrifts holds for CMK Corporation is dated 2021-11-24; the most recent is 2026-05-11. Across these filings the average return since disclosure is +16.69%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-09-04SELLunknown
fundnote株式会社
fundnote
activist8.7M¥770+0.7%¥1.1B ($7.3M)
2026-08-05BUYMarket Buy
fundnote株式会社
fundnote
activist10.1M¥670+14.2%¥549M ($3.5M)
2026-07-23BUYMarket Buy
野村證券株式会社
other52.6K¥648+18.1%¥18M ($119K)
2026-07-23SELLunknown
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other841.2K¥648-18.1%¥531M ($3.4M)
2026-07-23BUYMarket Buy
野村アセットマネジメント株式会社
other2.2M¥648+18.1%¥9M ($60K)
2026-07-06BUYunknown
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other1.7M¥634+20.7%¥1.1B ($6.8M)
2026-07-06BUYunknown
野村證券株式会社
other22.7K¥634+20.7%¥14M ($93K)
2026-07-06BUYunknown
野村アセットマネジメント株式会社
other2.2M¥634+20.7%¥1.4B ($8.9M)
2026-06-29SELLunknown
fundnote株式会社
fundnote
activist9.3M¥661-15.7%¥721M ($4.7M)
2026-06-26SELLunknown
fundnote株式会社
fundnote
activist10.4M¥657-16.4%¥684M ($4.4M)
2026-05-22BUYMarket Buy
fundnote株式会社
fundnote
activist11.4M¥695+10.1%¥545M ($3.5M)
2026-05-19SELLunknown
fundnote株式会社
fundnote
activist10.6M¥665-15.0%¥531M ($3.4M)
2026-05-11BUYMarket Buy
fundnote株式会社
fundnote
activist11.4M¥650+17.7%¥732M ($4.7M)
2026-04-06BUYMarket Buy
fundnote株式会社
fundnote
activist10.3M¥555+37.8%¥415M ($2.7M)
2026-03-11BUYMarket Buy
fundnote株式会社
fundnote
activist9.6M¥599+27.7%¥483M ($3.1M)
2026-03-09BUYMarket Buy
fundnote株式会社
fundnote
activist8.8M¥542+41.1%¥417M ($2.7M)
2026-01-20SELLunknown
アーカス・インベストメント・リミテッド
Arcus Investment Limited Director/Executive Director Edward Cartwright
other2.9M¥531-44.1%¥398M ($2.6M)
2025-12-22BUYMarket Buy
fundnote株式会社
fundnote
activist8.0M¥505+51.5%¥652M ($4.2M)
2025-12-09BUYMarket Buy
アーカス・インベストメント・リミテッド
Arcus Investment Limited Director/Executive Director Edward Cartwright
other3.6M¥495+54.5%¥364M ($2.3M)
2025-12-09BUYunknown
アーカス・インベストメント・リミテッド
Arcus Investment Limited Director/Executive Director Edward Cartwright
other3.6M¥495-¥364M ($2.3M)
2025-12-05BUYMarket Buy
fundnote株式会社
fundnote
activist6.7M¥500+53.0%¥613M ($4.0M)
2025-11-21BUYunknown
fundnote株式会社
fundnote
activist5.5M¥487-¥354M ($2.3M)
2025-11-21BUYMarket Buy
fundnote株式会社
fundnote
activist5.5M¥487+57.1%¥354M ($2.3M)
2025-11-10BUYunknown
fundnote株式会社
fundnote
activist4.7M¥455+68.1%¥2.2B ($13.9M)
2025-11-10BUYunknown
fundnote株式会社
fundnote
activist4.7M¥455-¥2.2B ($13.9M)
2025-10-09BUYMarket Buy
アーカス・インベストメント・リミテッド
Arcus Investment Limited Director/Executive Director Edward Cartwright
other4.3M¥380+101.3%¥282M ($1.8M)
2025-10-07BUYunknown
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic2.6M¥380--
2025-10-07SELLunknown
みずほ証券 株式会社
Mizuho Securities Co., Ltd.
strategic151.6K¥380-101.3%¥222M ($1.4M)
2025-10-07SELLunknown
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other1.0M¥380-101.3%¥146M ($944K)
2025-09-22BUYunknown
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic2.6M¥356--
2025-09-22SELLunknown
みずほ証券 株式会社
Mizuho Securities Co., Ltd.
strategic731.3K¥356-114.9%¥10M ($66K)
2025-09-22SELLunknown
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other1.4M¥356-114.9%¥426M ($2.8M)
2025-09-05BUYunknown
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic2.6M¥357--
2025-09-05BUYunknown
みずほ証券 株式会社
Mizuho Securities Co., Ltd.
strategic762.0K¥357+114.3%¥3M ($16K)
2025-09-05SELLunknown
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other2.6M¥357-114.3%¥275M ($1.8M)
2025-09-01SELLunknown
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic2.6M¥353-116.7%¥3M ($16K)
2025-09-01BUYunknown
みずほ証券 株式会社
Mizuho Securities Co., Ltd.
strategic753.1K¥353+116.7%¥3M ($16K)
2025-09-01SELLunknown
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other3.4M¥353-116.7%¥264M ($1.7M)
2025-07-15BUYunknown
アーカス・インベストメント・リミテッド
Arcus Investment Limited Director/Executive Director Edward Cartwright
other3.6M¥342+123.7%¥1.2B ($7.9M)
2025-06-30SELLMarket Buy
三菱UFJ信託銀行株式会社
Mitsubishi UFJ Financial Group Inc.
passive2.6M¥333-129.7%¥475M ($3.1M)
2025-06-30SELLMarket Buy
三菱UFJアセットマネジメント株式会社
Mitsubishi UFJ Financial Group Inc.
passive880.3K¥333-129.7%¥64M ($413K)
2025-06-23BUYMarket Buy
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic2.6M¥315--
2025-06-23BUYMarket Buy
みずほ証券 株式会社
Mizuho Securities Co., Ltd.
strategic748.1K¥315+142.9%¥204M ($1.3M)
2025-06-23BUYMarket Buy
アセットマネジメントOneインターナショナル
Asset Management One International Ltd.
other67.3K¥315+142.9%¥2.0B ($12.8M)
2025-06-23BUYMarket Buy
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other4.1M¥315--
2025-06-19BUYunknown
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic2.6M¥326--
2025-06-19SELLunknown
みずほ証券 株式会社
Mizuho Securities Co., Ltd.
strategic100.6K¥326-134.7%¥9M ($60K)
2025-06-19SELLunknown
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other4.1M¥326-134.7%¥214M ($1.4M)
2025-06-19SELLunknown
アセットマネジメントOneインターナショナル
Asset Management One International Ltd.
other97.3K¥326-134.7%¥12M ($75K)
2025-03-19BUYunknown
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic2.6M¥444--

Showing the 50 most recent of 171 filings.

Frequently asked questions

Who has been buying CMK Corporation stock?
18 distinct investors have filed 52 disclosed large-shareholding filings in CMK Corporation (6958), most recently on 2026-05-11. 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 CMK Corporation have?
CMK Corporation has 52 buy-side and 62 sell-side disclosures on record, covering ¥17.4B ($112.4M) in total reported value, spanning 2021-11-24 to 2026-05-11.
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.