Who has been buying Rokko Butter Co., Ltd. stock?

7 distinct investors have filed 11 disclosed large-shareholding filings in Rokko Butter Co., Ltd. (2266), most recently on 2026-02-05. 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 Rokko Butter Co., Ltd. have?

Rokko Butter Co., Ltd. has 11 buy-side and 7 sell-side disclosures on record, covering ¥1.3B ($8.1M) in total reported value, spanning 2021-11-19 to 2026-02-05.

Where does StockDrifts get Rokko Butter 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.

Rokko Butter Co., Ltd. 2266

Company

六甲バター株式会社Rokko Butter Co., Ltd.

Investors

Buys

Total Value

¥1.3B ($8.1M)

Avg Return

-17.24%

Last Filing

2026-02-05

Rokko Butter Co., Ltd. (2266) has 11 disclosed large-shareholding filings and 7 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥1.3B ($8.1M) in reported transaction value. The earliest filing StockDrifts holds for Rokko Butter Co., Ltd. is dated 2021-11-19; the most recent is 2026-02-05. 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 -17.24%, 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
2026-06-15	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	109.8K	¥1,042	+7.8%	¥20M ($130K)
2026-06-15	SELL	unknown	株式会社三菱UFJ銀行	unknown	0	¥1,042	-7.8%	¥1.0B ($6.5M)
2026-06-15	SELL	Market Buy	三菱UFJ信託銀行株式会社	passive	185.6K	¥1,042	-7.8%	¥40M ($260K)
2026-02-05	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.4M	¥1,201	+2.9%	¥8M ($50K)
2025-11-20	BUY	negotiated	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	234.2K	¥1,216	-4.1%	¥5M ($34K)
2025-11-20	SELL	negotiated	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.	other	280.8K	¥1,216	+4.1%	¥31M ($202K)
2025-11-20	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	853.0K	¥1,216	-4.1%	¥1.0B ($6.7M)
2025-09-19	BUY	Market Buy	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	230.3K	¥1,264	-7.8%	¥30M ($192K)
2025-09-19	SELL	Market Buy	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.	other	306.1K	¥1,264	+7.8%	¥11M ($70K)
2025-09-19	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	853.0K	¥1,264	-7.8%	¥1.1B ($7.0M)
2024-07-29	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	5.8K	¥1,480	-21.2%	¥902M ($5.8M)
2024-07-29	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	89.7K	¥1,480	-21.2%	¥133M ($856K)
2024-07-29	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	224.6K	¥1,480	-21.2%	¥19M ($123K)
2024-07-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	972.9K	¥1,480	-21.2%	¥1.4B ($9.3M)
2024-02-21	SELL	negotiated	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.	other	314.5K	¥1,371	+14.9%	¥85M ($550K)
2024-02-21	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	206.8K	¥1,371	-14.9%	¥12M ($76K)
2024-02-21	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	853.0K	¥1,371	-14.9%	¥1.2B ($7.5M)
2024-01-15	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	972.9K	¥1,349	-13.6%	¥1.3B ($8.5M)
2024-01-15	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	34.9K	¥1,349	+13.6%	¥425M ($2.7M)
2024-01-15	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	89.1K	¥1,349	-13.6%	¥3M ($19K)
2024-01-15	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	212.9K	¥1,349	-13.6%	¥287M ($1.9M)
2023-12-18	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	349.1K	¥1,303	-10.5%	¥455M ($2.9M)
2023-12-18	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	88.2K	¥1,303	-10.5%	¥81M ($523K)
2023-12-18	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	212.3K	¥1,303	+10.5%	¥157M ($1.0M)
2023-12-18	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	972.9K	¥1,303	-10.5%	¥1.3B ($8.2M)
2022-12-06	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	197.4K	¥1,377	+15.3%	¥21M ($133K)
2022-12-06	BUY	negotiated	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.	other	378.0K	¥1,377	-15.3%	¥18M ($114K)
2022-12-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	853.0K	¥1,377	-15.3%	¥1.2B ($7.6M)
2022-01-07	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	211.4K	¥1,563	-25.4%	¥330M ($2.1M)
2022-01-07	BUY	negotiated	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.	other	365.1K	¥1,563	-25.4%	¥7M ($43K)
2022-01-07	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	853.0K	¥1,563	-25.4%	¥1.3B ($8.6M)
2021-11-19	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	212.7K	¥1,615	-27.8%	¥139M ($894K)
2021-11-19	BUY	negotiated	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.	other	360.9K	¥1,615	-27.8%	¥204M ($1.3M)
2021-11-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	853.0K	¥1,615	-27.8%	¥1.4B ($8.9M)

Frequently asked questions

Who has been buying Rokko Butter Co., Ltd. stock?: 7 distinct investors have filed 11 disclosed large-shareholding filings in Rokko Butter Co., Ltd. (2266), most recently on 2026-02-05. 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 Rokko Butter Co., Ltd. have?: Rokko Butter Co., Ltd. has 11 buy-side and 7 sell-side disclosures on record, covering ¥1.3B ($8.1M) in total reported value, spanning 2021-11-19 to 2026-02-05.
Where does StockDrifts get Rokko Butter 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 Rokko Butter Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.