Who has been buying Kyosan Electric Manufacturing Co., Ltd. stock?

8 distinct investors have filed 11 disclosed large-shareholding filings in Kyosan Electric Manufacturing Co., Ltd. (6742), most recently on 2026-01-23. 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 Kyosan Electric Manufacturing Co., Ltd. have?

Kyosan Electric Manufacturing Co., Ltd. has 11 buy-side and 4 sell-side disclosures on record, covering ¥866M ($5.6M) in total reported value, spanning 2023-05-09 to 2026-01-23.

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.

Kyosan Electric Manufacturing Co., Ltd. 6742

Company

株式会社京三製作所Kyosan Electric Manufacturing Co., Ltd.

Investors

Buys

Total Value

¥866M ($5.6M)

Avg Return

+24.73%

Last Filing

2026-01-23

Kyosan Electric Manufacturing Co., Ltd. (6742) has 11 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥866M ($5.6M) in reported transaction value. The earliest filing StockDrifts holds for Kyosan Electric Manufacturing Co., Ltd. is dated 2023-05-09; the most recent is 2026-01-23. Across these filings the average return since disclosure is +24.73%, 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
2026-01-23	SELL	unknown	京三みづほ会理事長佐藤洋一 Hirokazu Sato, President of Kyosan Mizuhokai	other	772.6K	¥652	-69.6%	¥2.8B ($18.2M)
2026-01-23	BUY	Market Buy	京三みづほ会理事長佐藤洋一 Hirokazu Sato, President of Kyosan Mizuhokai	other	3.8M	¥652	+69.6%	¥434M ($2.8M)
2026-01-23	BUY	Market Buy	京三みづほ会理事長佐藤洋一 Hirokazu Sato, President of Kyosan Mizuhokai	other	4.5M	¥652	+69.6%	¥418M ($2.7M)
2026-01-23	BUY	Market Buy	京三みづほ会理事長佐藤洋一 Hirokazu Sato, President of Kyosan Mizuhokai	other	5.1M	¥652	+69.6%	¥410M ($2.6M)
2026-01-23	BUY	unknown	京三みづほ会理事長佐藤洋一 Hirokazu Sato, President of Kyosan Mizuhokai	other	3.2M	¥652	+69.6%	¥2.1B ($13.3M)
2025-12-12	BUY	unknown	京三みづほ会理事長佐藤洋一 Kyosan Mizuho Kai Chairman Hirokazu Sato	other	4.4M	¥605	-	¥369M ($2.4M)
2025-12-12	BUY	unknown	京三みづほ会理事長佐藤洋一 Kyosan Mizuho Kai Chairman Hirokazu Sato	other	728.5K	¥605	-	¥2.6B ($16.8M)
2025-12-12	SELL	unknown	京三みづほ会理事長佐藤洋一 Kyosan Mizuho Kai Chairman Hirokazu Sato	other	728.5K	¥605	-82.8%	¥2.6B ($16.8M)
2025-12-12	BUY	unknown	京三みづほ会理事長佐藤洋一 Kyosan Mizuho Kai Chairman Hirokazu Sato	other	3.2M	¥605	+82.8%	¥1.9B ($12.3M)
2025-12-12	BUY	Market Buy	京三みづほ会理事長佐藤洋一 Kyosan Mizuho Kai Chairman Hirokazu Sato	other	3.8M	¥605	+82.8%	¥403M ($2.6M)
2025-12-12	BUY	Market Buy	京三みづほ会理事長佐藤洋一 Kyosan Mizuho Kai Chairman Hirokazu Sato	other	4.4M	¥605	+82.8%	¥369M ($2.4M)
2025-12-12	BUY	Market Buy	京三みづほ会理事長佐藤洋一 Kyosan Mizuho Kai Chairman Hirokazu Sato	other	5.0M	¥605	+82.8%	¥361M ($2.3M)
2025-12-12	BUY	unknown	京三みづほ会理事長佐藤洋一 Kyosan Mizuho Kai Chairman Hirokazu Sato	other	3.2M	¥605	-	¥1.9B ($12.3M)
2025-12-12	BUY	unknown	京三みづほ会理事長佐藤洋一 Kyosan Mizuho Kai Chairman Hirokazu Sato	other	3.8M	¥605	-	¥403M ($2.6M)
2025-12-12	BUY	unknown	京三みづほ会理事長佐藤洋一 Kyosan Mizuho Kai Chairman Hirokazu Sato	other	5.0M	¥605	-	¥361M ($2.3M)
2023-09-04	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.2M	¥461	-139.9%	¥55M ($355K)
2023-09-04	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.5M	¥461	-139.9%	¥304M ($2.0M)
2023-09-04	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	63.6K	¥461	-	¥29M ($189K)
2023-09-04	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	255.3K	¥461	+139.9%	¥52M ($336K)
2023-05-09	BUY	negotiated	株式会社横浜銀行 The Bank of Yokohama. Ltd	strategic	3.1M	¥432	+156.0%	¥1.3B ($8.7M)
2023-05-09	BUY	negotiated	株式会社神奈川銀行 Kanagawa Bank, Ltd.	strategic	100.0K	¥432	+156.0%	¥43M ($279K)

Frequently asked questions

Who has been buying Kyosan Electric Manufacturing Co., Ltd. stock?: 8 distinct investors have filed 11 disclosed large-shareholding filings in Kyosan Electric Manufacturing Co., Ltd. (6742), most recently on 2026-01-23. 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 Kyosan Electric Manufacturing Co., Ltd. have?: Kyosan Electric Manufacturing Co., Ltd. has 11 buy-side and 4 sell-side disclosures on record, covering ¥866M ($5.6M) in total reported value, spanning 2023-05-09 to 2026-01-23.
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.