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Osaka Organic Chemical Industry Ltd. 4187

Company
大阪有機化学工業株式会社Osaka Organic Chemical Industry Ltd.
Investors
9
Buys
12
Total Value
¥4.0B ($25.6M)
Avg Return
+51.68%
Last Filing
2026-05-11

Osaka Organic Chemical Industry Ltd. (4187) has 12 disclosed large-shareholding filings and 11 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥4.0B ($25.6M) in reported transaction value. The earliest filing StockDrifts holds for Osaka Organic Chemical Industry Ltd. is dated 2021-07-21; the most recent is 2026-05-11. Across these filings the average return since disclosure is +51.68%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-05-11SELLunknown
アモーヴァ・アセットマネジメント株式会社
other450.8K¥4,940+14.0%¥1.3B ($8.6M)
2026-05-11SELLunknown
三井住友トラスト・アセットマネジメント株式会社
other395.2K¥4,940+14.0%¥77M ($500K)
2025-09-19SELLunknown
三井住友トラスト・アセットマネジメント株式会社
Sumitomo Mitsui Trust Asset Management Co.,Ltd.
other409.7K¥3,115-36.4%¥49M ($315K)
2025-09-19SELLunknown
アモーヴァ・アセットマネジメント株式会社
Amova Asset Management Co., Ltd.
other722.7K¥3,115-36.4%¥56M ($360K)
2025-03-17BUYnegotiated
株式会社三菱UFJ銀行
Mitsubishi UFJ Financial Group Inc.
strategic395.2K¥2,637+61.2%¥1.0B ($6.7M)
2025-03-17BUYnegotiated
三菱UFJ信託銀行株式会社
Mitsubishi UFJ Financial Group Inc.
passive559.8K¥2,637+61.2%¥1.5B ($9.5M)
2025-03-17BUYnegotiated
三菱UFJアセットマネジメント株式会社
Mitsubishi UFJ Financial Group Inc.
passive172.0K¥2,637+61.2%¥454M ($2.9M)
2024-04-04BUYunknown
三井住友トラスト・アセットマネジメント株式会社
Sumitomo Mitsui Trust Asset Management Co.,Ltd.
other425.8K¥3,200+32.8%¥1.4B ($8.8M)
2024-04-04BUYunknown
日興アセットマネジメント株式会社
Nikko Asset Management Co.,Ltd.
other740.2K¥3,200+32.8%¥2.4B ($15.3M)
2023-09-21SELLunknown
野村證券株式会社
Nomura Securities Co.,Ltd.
other242¥2,501-69.9%¥196M ($1.3M)
2023-09-21SELLunknown
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other78.7K¥2,501-69.9%¥482M ($3.1M)
2023-09-21BUYunknown
野村アセットマネジメント株式会社
Nomura Asset Management Co., Ltd.
other999.0K¥2,501+69.9%¥157M ($1.0M)
2023-07-20SELLunknown
野村證券株式会社
Nomura Securities Co.,Ltd.
other79.3K¥2,715-56.5%¥37M ($236K)
2023-07-20BUYunknown
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other270.3K¥2,715+56.5%¥383M ($2.5M)
2023-07-20BUYunknown
野村アセットマネジメント株式会社
Nomura Asset Management Co., Ltd.
other936.1K¥2,715+56.5%¥43M ($275K)
2023-07-05BUYunknown
ノムラ インターナショナル ピーエルシー
NOMURA INTERNATIONAL PLC
other130.3K¥2,940+44.6%¥383M ($2.5M)
2023-07-05BUYunknown
野村アセットマネジメント株式会社
Nomura Asset Management Co., Ltd.
other921.2K¥2,940+44.6%¥2.7B ($17.5M)
2023-07-05BUYunknown
野村證券株式会社
Nomura Securities Co.,Ltd.
other92.8K¥2,940+44.6%¥273M ($1.8M)
2023-05-29BUYnegotiated
株式会社三菱UFJ銀行
Mitsubishi UFJ Financial Group Inc.
strategic395.2K¥2,384--
2023-05-29SELLnegotiated
三菱UFJ信託銀行株式会社
Mitsubishi UFJ Financial Group Inc.
passive396.9K¥2,384-78.3%¥198M ($1.3M)
2023-05-29BUYnegotiated
三菱UFJ国際投信株式会社
Mitsubishi UFJ Financial Group Inc.
passive117.8K¥2,384+78.3%¥91M ($586K)
2023-05-29SELLnegotiated
三菱UFJモルガン・スタンレー証券株式会社
Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.
other21.1K¥2,384-78.3%¥406M ($2.6M)
2021-07-21SELLunknown
三井住友トラスト・アセットマネジメント株式会社
Sumitomo Mitsui Trust Asset Management Co.,Ltd.
other534.5K¥3,590-18.4%¥217M ($1.4M)
2021-07-21SELLunknown
日興アセットマネジメント株式会社
Nikko Asset Management Co.,Ltd.
other296.9K¥3,590-18.4%¥925M ($6.0M)

Frequently asked questions

Who has been buying Osaka Organic Chemical Industry Ltd. stock?
9 distinct investors have filed 12 disclosed large-shareholding filings in Osaka Organic Chemical Industry Ltd. (4187), 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 Osaka Organic Chemical Industry Ltd. have?
Osaka Organic Chemical Industry Ltd. has 12 buy-side and 11 sell-side disclosures on record, covering ¥4.0B ($25.6M) in total reported value, spanning 2021-07-21 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.