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Ohki Healthcare Holdings Co.,Ltd. 3417

Company
大木ヘルスケアホールディングス株式会社Ohki Healthcare Holdings Co.,Ltd.
Investors
4
Buys
3
Total Value
¥1.4B ($8.9M)
Avg Return
+41.69%
Last Filing
2026-02-27

Ohki Healthcare Holdings Co.,Ltd. (3417) has 3 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥1.4B ($8.9M) in reported transaction value. The earliest filing StockDrifts holds for Ohki Healthcare Holdings Co.,Ltd. is dated 2025-03-07; the most recent is 2026-02-27. Across these filings the average return since disclosure is +41.69%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-08-13BUYunknown
有限会社キャピタル・マネジメント
Capital Management
activist1.4M¥1,057-¥585M ($3.8M)
2026-05-27BUYunknown
有限会社キャピタル・マネジメント
Capital Management
activist847.8K¥1,129-¥160M ($1.0M)
2026-02-27BUYMarket Buy
有限会社キャピタル・マネジメント
Capital Management
activist704.5K¥1,351-26.4%¥952M ($6.1M)
2025-08-05BUYnegotiated
東邦ホールディングス株式会社
TOHO HOLDINGS CO.,LTD.
strategic1.4M¥1,239--
2025-04-07SELLunknown
みずほ信託銀行株式会社
Mizuho Trust & Banking Co., Ltd.
other347.5K¥686-45.0%¥112M ($722K)
2025-04-07BUYunknown
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic231.8K¥686--
2025-03-07BUYunknown
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic231.8K¥836+19.0%¥194M ($1.3M)
2025-03-07BUYunknown
みずほ信託銀行株式会社
Mizuho Trust & Banking Co., Ltd.
other510.2K¥836+19.0%¥427M ($2.8M)

Frequently asked questions

Who has been buying Ohki Healthcare Holdings Co.,Ltd. stock?
4 distinct investors have filed 3 disclosed large-shareholding filings in Ohki Healthcare Holdings Co.,Ltd. (3417), most recently on 2026-02-27. 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 Ohki Healthcare Holdings Co.,Ltd. have?
Ohki Healthcare Holdings Co.,Ltd. has 3 buy-side and 1 sell-side disclosures on record, covering ¥1.4B ($8.9M) in total reported value, spanning 2025-03-07 to 2026-02-27.
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.