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Okamoto Industries, Inc. 5122

Company
オカモト株式会社Okamoto Industries, Inc.
Investors
6
Buys
4
Total Value
¥6.5B ($42.1M)
Avg Return
+19.30%
Last Filing
2026-03-06

Okamoto Industries, Inc. (5122) has 4 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥6.5B ($42.1M) in reported transaction value. The earliest filing StockDrifts holds for Okamoto Industries, Inc. is dated 2021-05-26; the most recent is 2026-03-06. 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 +19.30%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-07-03BUYMarket Buy
コバス・アセット・マネジメント・エスジーアイアイシー・エスエー(Cobas Asset Management, SGIIC, SA)
Cobas Asset Management, SGIIC, SA
passive1.1M¥5,420+10.7%¥998M ($6.4M)
2026-03-06BUYMarket Buy
コバス・アセット・マネジメント・エスジーアイアイシー・エスエー(Cobas Asset Management, SGIIC, SA)
Cobas Asset Management, SGIIC, SA
passive887.0K¥5,920-0.7%¥5.3B ($33.9M)
2025-04-21BUYMarket Buy
明治安田生命保険相互会社
Meiji Yasuda Life Insurance Company
passive1.5M¥5,100+15.3%¥1.0B ($6.5M)
2024-03-07SELLMarket Buy
アセットマネジメントOne株式会社
Asset Management One Co., Ltd.
other201.7K¥4,905-19.9%¥817M ($5.3M)
2024-03-07SELLMarket Buy
みずほ信託銀行株式会社
Mizuho Trust & Banking Co., Ltd.
unknown0¥4,905-19.9%¥107M ($687K)
2024-03-07BUYMarket Buy
株式会社みずほ銀行
Mizuho Bank, Ltd.
strategic875.2K¥4,905+19.9%¥36M ($229K)
2021-05-26BUYMarket Buy
丸紅株式会社
Marubeni Corporation
strategic1.4M¥4,120+42.7%¥234M ($1.5M)

Frequently asked questions

Who has been buying Okamoto Industries, Inc. stock?
6 distinct investors have filed 4 disclosed large-shareholding filings in Okamoto Industries, Inc. (5122), most recently on 2026-03-06. 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 Okamoto Industries, Inc. have?
Okamoto Industries, Inc. has 4 buy-side and 2 sell-side disclosures on record, covering ¥6.5B ($42.1M) in total reported value, spanning 2021-05-26 to 2026-03-06.
Where does StockDrifts get Okamoto Industries, Inc. 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 Okamoto Industries, Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.