Who has been buying Oiles Corporation stock?

10 distinct investors have filed 11 disclosed large-shareholding filings in Oiles Corporation (6282), most recently on 2025-09-22. 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 Oiles Corporation have?

Oiles Corporation has 11 buy-side and 13 sell-side disclosures on record, covering ¥2.8B ($17.7M) in total reported value, spanning 2021-04-02 to 2025-09-22.

Where does StockDrifts get Oiles Corporation 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.

Oiles Corporation 6282

Company

オイレス工業株式会社Oiles Corporation

Investors

Buys

Total Value

¥2.8B ($17.7M)

Avg Return

+51.71%

Last Filing

2025-09-22

Oiles Corporation (6282) has 11 disclosed large-shareholding filings and 13 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥2.8B ($17.7M) in reported transaction value. The earliest filing StockDrifts holds for Oiles Corporation is dated 2021-04-02; the most recent is 2025-09-22. 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 +51.71%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2025-09-22	SELL	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	521.3K	¥2,332	-8.7%	¥140M ($902K)
2025-09-22	BUY	Market Buy	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	958.1K	¥2,332	+8.7%	¥1.5B ($9.5M)
2025-09-22	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.2M	¥2,332	+8.7%	¥85M ($551K)
2023-04-21	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	599.0K	¥1,697	-49.4%	¥17M ($113K)
2023-04-21	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	338.4K	¥1,697	-49.4%	¥12M ($75K)
2023-04-21	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	100	¥1,697	-49.4%	¥1.1B ($6.8M)
2023-04-21	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.2M	¥1,697	+49.4%	¥2.0B ($13.1M)
2023-03-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	610.1K	¥1,707	-48.5%	¥117M ($755K)
2023-03-07	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	347.7K	¥1,707	-48.5%	¥433M ($2.8M)
2023-03-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	621.0K	¥1,707	+48.5%	¥1.1B ($6.8M)
2023-03-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.2M	¥1,707	+48.5%	¥2.0B ($13.2M)
2022-04-18	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	232.5K	¥1,477	+71.6%	¥101M ($654K)
2022-04-18	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	446.5K	¥1,477	-71.6%	¥5M ($33K)
2022-04-18	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	567.3K	¥1,477	+71.6%	¥838M ($5.4M)
2022-04-18	SELL	negotiated	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.	other	18.9K	¥1,477	-71.6%	¥851M ($5.5M)
2022-03-07	SELL	negotiated	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.	other	597.2K	¥1,511	-67.8%	¥5M ($33K)
2022-03-07	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	163.2K	¥1,511	+67.8%	¥10M ($67K)
2022-03-07	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	448.0K	¥1,511	+67.8%	¥16M ($100K)
2022-03-07	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	567.3K	¥1,511	+67.8%	¥857M ($5.5M)
2022-01-31	BUY	negotiated	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.	other	601.3K	¥1,601	+58.3%	¥963M ($6.2M)
2022-01-31	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	157.7K	¥1,601	+58.3%	¥252M ($1.6M)
2022-01-31	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	439.6K	¥1,601	+58.3%	¥704M ($4.5M)
2022-01-31	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	567.3K	¥1,601	+58.3%	¥908M ($5.9M)
2021-12-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	679.0K	¥1,770	+43.2%	¥1.2B ($7.8M)
2021-12-07	SELL	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	601.6K	¥1,770	-43.2%	¥225M ($1.4M)
2021-12-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.2M	¥1,770	+43.2%	¥2.1B ($13.7M)
2021-05-19	BUY	Market Buy	東京中小企業投資育成株式会社 TOKYO SMALL AND MEDIUM BUSINESS INVESTMENT & CONSULTATION CO.,LTD	passive	3.0M	¥1,594	+59.0%	¥913M ($5.9M)
2021-04-19	SELL	negotiated	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.	other	31.2K	¥1,669	-51.9%	¥830M ($5.4M)
2021-04-19	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	154.1K	¥1,669	+51.9%	¥6M ($37K)
2021-04-19	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	479.9K	¥1,669	-51.9%	¥23M ($148K)
2021-04-19	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	567.3K	¥1,669	+51.9%	¥947M ($6.1M)
2021-04-02	SELL	unknown	日本バリュー・インベスターズ株式会社 Nippon Value Investors KK	other	1.4M	¥1,421.187	-78.4%	¥653M ($4.2M)

Frequently asked questions

Who has been buying Oiles Corporation stock?: 10 distinct investors have filed 11 disclosed large-shareholding filings in Oiles Corporation (6282), most recently on 2025-09-22. 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 Oiles Corporation have?: Oiles Corporation has 11 buy-side and 13 sell-side disclosures on record, covering ¥2.8B ($17.7M) in total reported value, spanning 2021-04-02 to 2025-09-22.
Where does StockDrifts get Oiles Corporation 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 Oiles Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.