Who has been buying Mitsubishi Kakoki Kaisha, Ltd. stock?

7 distinct investors have filed 11 disclosed large-shareholding filings in Mitsubishi Kakoki Kaisha, Ltd. (6331), most recently on 2026-03-03. 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 Mitsubishi Kakoki Kaisha, Ltd. have?

Mitsubishi Kakoki Kaisha, Ltd. has 11 buy-side and 9 sell-side disclosures on record, covering ¥688M ($4.4M) in total reported value, spanning 2023-01-27 to 2026-03-03.

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.

Mitsubishi Kakoki Kaisha, Ltd. 6331

Company

三菱化工機株式会社Mitsubishi Kakoki Kaisha, Ltd.

Investors

Buys

Total Value

¥688M ($4.4M)

Avg Return

+168.59%

Last Filing

2026-03-03

Mitsubishi Kakoki Kaisha, Ltd. (6331) has 11 disclosed large-shareholding filings and 9 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥688M ($4.4M) in reported transaction value. The earliest filing StockDrifts holds for Mitsubishi Kakoki Kaisha, Ltd. is dated 2023-01-27; the most recent is 2026-03-03. Across these filings the average return since disclosure is +168.59%, 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
2026-08-21	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	1.6M	¥3,265	+3.2%	¥1.3B ($8.7M)
2026-08-20	BUY	unknown	野村證券株式会社	other	8.9K	¥3,220	+4.7%	¥29M ($186K)
2026-08-20	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	137.7K	¥3,220	+4.7%	¥443M ($2.9M)
2026-08-20	BUY	unknown	野村アセットマネジメント株式会社	other	1.1M	¥3,220	+4.7%	¥3.4B ($21.8M)
2026-08-07	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	91.9K	¥3,215	-4.8%	¥595M ($3.8M)
2026-08-07	SELL	unknown	野村證券株式会社	other	5.6K	¥3,215	-4.8%	¥145M ($936K)
2026-08-07	SELL	unknown	野村アセットマネジメント株式会社	other	993.5K	¥3,215	-4.8%	¥61M ($394K)
2026-07-07	BUY	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	1.2M	¥3,880	-13.1%	¥4.7B ($30.4M)
2026-03-03	BUY	unknown	野村證券株式会社	other	49.5K	¥3,485	-	¥173M ($1.1M)
2026-03-03	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	277.9K	¥3,485	-	¥968M ($6.2M)
2026-03-03	SELL	unknown	野村アセットマネジメント株式会社	other	1.0M	¥3,485	+3.3%	¥1.2B ($7.6M)
2025-04-21	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	15.1K	¥1,216	-177.1%	¥26.6B ($171.4M)
2025-04-21	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	5.0K	¥1,216	+177.1%	¥580M ($3.7M)
2025-04-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.3M	¥1,216	+177.1%	¥6M ($37K)
2025-04-07	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-2.5K	¥1,055	+188.6%	¥3M ($16K)
2025-04-07	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	232.1K	¥1,055	-219.4%	¥63M ($404K)
2025-04-07	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.3M	¥1,055	-219.4%	¥58M ($372K)
2025-02-21	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-1.3K	¥1,258.33	-142.0%	¥107M ($687K)
2025-02-21	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	97.1K	¥1,258.33	+167.8%	¥84M ($540K)
2025-02-21	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	466.5K	¥1,258.33	+167.8%	¥2M ($13K)
2025-02-06	SELL	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	30.5K	¥1,273.33	-164.7%	¥504M ($3.3M)
2025-02-06	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	83.5K	¥1,273.33	+164.7%	¥113M ($728K)
2025-02-06	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	464.4K	¥1,273.33	+164.7%	¥34M ($221K)
2024-11-22	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	-5.5K	¥1,088.33	+179.8%	-
2024-11-22	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	34.7K	¥1,088.33	+209.7%	¥38M ($244K)
2024-11-22	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	437.4K	¥1,088.33	+209.7%	¥476M ($3.1M)
2023-06-05	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	168.2K	¥838	-302.1%	¥56M ($364K)
2023-06-05	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	89.6K	¥838	-302.1%	¥44M ($287K)
2023-06-05	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	38.2K	¥838	+302.1%	¥7M ($47K)
2023-01-27	SELL	unknown	三菱重工業株式会社 Mitsubishi Heavy Industries, Ltd.	other	337.0K	¥720.67	-367.6%	¥57M ($368K)

Frequently asked questions

Who has been buying Mitsubishi Kakoki Kaisha, Ltd. stock?: 7 distinct investors have filed 11 disclosed large-shareholding filings in Mitsubishi Kakoki Kaisha, Ltd. (6331), most recently on 2026-03-03. 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 Mitsubishi Kakoki Kaisha, Ltd. have?: Mitsubishi Kakoki Kaisha, Ltd. has 11 buy-side and 9 sell-side disclosures on record, covering ¥688M ($4.4M) in total reported value, spanning 2023-01-27 to 2026-03-03.
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.