StockDrifts LogoStockDrifts

Okano Valve Mfg.Co.Ltd. 6492

Company
岡野バルブ製造株式会社Okano Valve Mfg.Co.Ltd.
Investors
5
Buys
3
Total Value
¥157M ($1.0M)
Avg Return
+388.20%
Last Filing
2025-12-05

Okano Valve Mfg.Co.Ltd. (6492) has 3 disclosed large-shareholding filings and 7 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥157M ($1.0M) in reported transaction value. The earliest filing StockDrifts holds for Okano Valve Mfg.Co.Ltd. is dated 2021-04-21; the most recent is 2025-12-05. 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 +388.20%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2025-12-05SELLMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive89.3K¥8,010-65.0%¥161M ($1.0M)
2025-09-29SELLMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive109.3K¥8,250-60.2%¥22M ($143K)
2023-10-17BUYMarket Buy
光通信株式会社
Hikari Tsushin K.K.
passive112.1K¥2,723+385.5%¥60M ($387K)
2023-10-02SELLMarket Buy
タワー投資顧問株式会社
TOWER INVESTMENT MANAGEMENT Co.,Ltd
passive89.4K¥2,568-414.8%¥72M ($463K)
2023-09-25SELLMarket Buy
タワー投資顧問株式会社
TOWER INVESTMENT MANAGEMENT Co.,Ltd
passive117.4K¥2,529-422.7%¥68M ($436K)
2023-08-30SELLMarket Buy
タワー投資顧問株式会社
TOWER INVESTMENT MANAGEMENT Co.,Ltd
passive144.2K¥2,568-414.8%¥52M ($339K)
2023-06-23SELLMarket Buy
タワー投資顧問株式会社
TOWER INVESTMENT MANAGEMENT Co.,Ltd
activist164.6K¥2,740-382.5%¥75M ($485K)
2022-10-21BUYMarket Buy
岡野 正敏
Masatoshi Okano
unknown134.4K¥2,817+369.3%¥379M ($2.4M)
2022-10-21BUYMarket Buy
岡野商事株式会社
OKANO TRADING CO.,LTD.
strategic392.2K¥2,817+369.3%¥87M ($564K)
2022-02-17SELLunknown
三井物産株式会社
Mitsui & Co., LTD.
activist80.2K¥2,189-503.9%¥88M ($565K)
2021-04-21BUYMarket Buy
タワー投資顧問株式会社
TOWER INVESTMENT MANAGEMENT Co.,Ltd
activist192.0K¥2,593+409.8%¥10M ($63K)

Frequently asked questions

Who has been buying Okano Valve Mfg.Co.Ltd. stock?
5 distinct investors have filed 3 disclosed large-shareholding filings in Okano Valve Mfg.Co.Ltd. (6492), most recently on 2025-12-05. 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 Okano Valve Mfg.Co.Ltd. have?
Okano Valve Mfg.Co.Ltd. has 3 buy-side and 7 sell-side disclosures on record, covering ¥157M ($1.0M) in total reported value, spanning 2021-04-21 to 2025-12-05.
Where does StockDrifts get Okano Valve Mfg.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 Okano Valve Mfg.Co.Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.