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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
8
Buys
1
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. 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 +53.98%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-06-22SELLunknown
土肥 雄治
YUJI DOHI
strategic1.0M¥140-1.4%¥70M ($452K)
2025-11-19BUYunknown
土肥 雄治
YUJI DOHI
strategic1.5M¥193-9.8%¥290M ($1.9M)
2025-02-20SELLunknown
伊藤忠丸紅鉄鋼株式会社
Marubeni-Itochu Steel Inc.
other805.9K¥279+37.6%¥53M ($343K)
2024-08-20SELLMarket 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
passive0¥240+27.5%¥250M ($1.6M)
2024-08-20SELLMarket Buy
インフレクション・ツー・ジーピー・インク(InfleXion II GP
InfleXion II GP
passive0¥240+27.5%¥548M ($3.5M)
2024-08-20SELLMarket 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.
passive0¥240+27.5%¥87M ($564K)
2024-05-09BUYunknown
マルエヌ株式会社
Maruenu Co.,Ltd.
other3.9M¥127+37.0%¥492M ($3.2M)
2024-05-09BUYunknown
マルエヌ株式会社
Maruenu Co.,Ltd.
other3.9M¥127+37.0%¥492M ($3.2M)
2024-05-02SELLunknown
積水ハウス株式会社
Sekisui House, Ltd.
unknown0¥121-43.8%¥469M ($3.0M)
2024-03-01SELLMarket 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
passive1.1M¥113-54.0%¥103M ($666K)
2024-03-01BUYMarket Buy
インフレクション・ツー・ジーピー・インク(InfleXion II GP
InfleXion II GP
passive2.6M¥113+54.0%¥253M ($1.6M)
2024-03-01SELLMarket 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.
passive372.6K¥113-54.0%¥36M ($230K)
2021-06-14SELLunknown
土肥 智雄
Tomoo Dohi
strategic773.5K¥129-34.9%¥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.
Where does StockDrifts get Japan Power Fastening 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 Japan Power Fastening Co.,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.