Who has been buying Japan Power Fastening Co.,Ltd. stock?

8 distinct investors have filed 1 disclosed large-shareholding filings in Japan Power Fastening Co.,Ltd. (5950), most recently on 2025-11-19. 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 Japan Power Fastening Co.,Ltd. have?

Japan Power Fastening Co.,Ltd. has 1 buy-side and 8 sell-side disclosures on record, covering ¥253M ($1.6M) in total reported value, spanning 2021-06-14 to 2025-11-19.

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.

Japan Power Fastening Co.,Ltd. 5950

Company

日本パワーファスニング株式会社Japan Power Fastening Co.,Ltd.

Investors

Buys

Total Value

¥253M ($1.6M)

Avg Return

+53.98%

Last Filing

2025-11-19

Japan Power Fastening Co.,Ltd. (5950) has 1 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥253M ($1.6M) in reported transaction value. The earliest filing StockDrifts holds for Japan Power Fastening Co.,Ltd. is dated 2021-06-14; the most recent is 2025-11-19. Across these filings the average return since disclosure is +53.98%, 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
2026-06-22	SELL	unknown	土肥雄治 YUJI DOHI	strategic	1.0M	¥140	-7.9%	¥70M ($452K)
2025-11-19	BUY	unknown	土肥雄治 YUJI DOHI	strategic	1.5M	¥193	-	-
2025-02-20	SELL	unknown	伊藤忠丸紅鉄鋼株式会社 Marubeni-Itochu Steel Inc.	other	805.9K	¥279	+45.9%	¥53M ($343K)
2024-08-20	SELL	Market Buy	株式会社フラッグシップアセットマネジメント Flagship Asset Management, Inc.	passive	0	¥240	+37.1%	¥87M ($564K)
2024-08-20	SELL	Market Buy	インフレクション・ツー・ジーピー・インク(InfleXion II GP InfleXion II GP	passive	0	¥240	+37.1%	¥548M ($3.5M)
2024-08-20	SELL	Market Buy	インフレクション・ツー・ケイマン・ジーピー・インク(InfleXion II Cayman GP InfleXion II Cayman GP	passive	0	¥240	+37.1%	¥250M ($1.6M)
2024-05-09	BUY	unknown	マルエヌ株式会社 Maruenu Co.,Ltd.	other	3.9M	¥127	-	¥492M ($3.2M)
2024-05-09	BUY	unknown	マルエヌ株式会社 Maruenu Co.,Ltd.	other	3.9M	¥127	-	¥492M ($3.2M)
2024-05-02	SELL	unknown	積水ハウス株式会社 Sekisui House, Ltd.	unknown	0	¥121	-24.8%	¥469M ($3.0M)
2024-03-01	SELL	Market Buy	株式会社フラッグシップアセットマネジメント Flagship Asset Management, Inc.	passive	372.6K	¥113	-33.6%	¥36M ($230K)
2024-03-01	BUY	Market Buy	インフレクション・ツー・ジーピー・インク(InfleXion II GP InfleXion II GP	passive	2.6M	¥113	+33.6%	¥253M ($1.6M)
2024-03-01	SELL	Market Buy	インフレクション・ツー・ケイマン・ジーピー・インク(InfleXion II Cayman GP InfleXion II Cayman GP	passive	1.1M	¥113	-33.6%	¥103M ($666K)
2021-06-14	SELL	unknown	土肥智雄 Tomoo Dohi	strategic	773.5K	¥129	-17.1%	¥29M ($187K)

Frequently asked questions

Who has been buying Japan Power Fastening Co.,Ltd. stock?: 8 distinct investors have filed 1 disclosed large-shareholding filings in Japan Power Fastening Co.,Ltd. (5950), most recently on 2025-11-19. 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 Japan Power Fastening Co.,Ltd. have?: Japan Power Fastening Co.,Ltd. has 1 buy-side and 8 sell-side disclosures on record, covering ¥253M ($1.6M) in total reported value, spanning 2021-06-14 to 2025-11-19.
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.