Who has been buying Joshin Denki Co., Ltd. stock?

10 distinct investors have filed 10 disclosed large-shareholding filings in Joshin Denki Co., Ltd. (8173), most recently on 2025-02-20. 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 Joshin Denki Co., Ltd. have?

Joshin Denki Co., Ltd. has 10 buy-side and 13 sell-side disclosures on record, covering ¥530M ($3.4M) in total reported value, spanning 2021-06-21 to 2025-02-20.

Where does StockDrifts get Joshin Denki 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.

Joshin Denki Co., Ltd. 8173

Company

上新電機株式会社Joshin Denki Co., Ltd.

Investors

Buys

Total Value

¥530M ($3.4M)

Avg Return

+28.23%

Last Filing

2025-02-20

Joshin Denki Co., Ltd. (8173) has 10 disclosed large-shareholding filings and 13 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥530M ($3.4M) in reported transaction value. The earliest filing StockDrifts holds for Joshin Denki Co., Ltd. is dated 2021-06-21; the most recent is 2025-02-20. 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 +28.23%, 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
2025-02-20	BUY	negotiated	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	385.0K	¥2,169	+30.6%	¥103M ($666K)
2025-02-20	SELL	negotiated	株式会社りそな銀行 Resona Bank, Limited.	strategic	800.0K	¥2,169	-30.6%	¥868M ($5.6M)
2023-08-04	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	420.0K	¥2,002	+41.5%	¥841M ($5.4M)
2023-08-04	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	261.7K	¥2,002	-41.5%	¥73M ($470K)
2023-08-04	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	661.5K	¥2,002	-41.5%	¥230M ($1.5M)
2023-04-20	SELL	negotiated	株式会社関西みらい銀行 Kansai Mirai Bank, Ltd.	other	0	¥1,985	-42.7%	¥200M ($1.3M)
2023-04-20	SELL	negotiated	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	339.8K	¥1,985	-42.7%	¥61M ($394K)
2023-04-20	SELL	negotiated	株式会社みなと銀行 The Minato Bank, Ltd.	other	0	¥1,985	-42.7%	¥200M ($1.3M)
2023-04-20	SELL	negotiated	株式会社りそな銀行 Resona Bank, Limited.	strategic	1.2M	¥1,985	-42.7%	¥100M ($645K)
2022-07-06	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	298.1K	¥1,916	-47.8%	¥64M ($415K)
2022-07-06	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	775.3K	¥1,916	-47.8%	¥172M ($1.1M)
2022-07-06	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	420.0K	¥1,916	-47.8%	¥343M ($2.2M)
2022-06-06	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	140.1K	¥1,863	+52.0%	¥125M ($808K)
2022-06-06	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	753.2K	¥1,863	-52.0%	¥433M ($2.8M)
2022-06-06	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	250.0K	¥1,863	-52.0%	¥230M ($1.5M)
2022-03-22	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	329.3K	¥2,040	-38.8%	¥11M ($74K)
2022-03-22	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	864.1K	¥2,040	+38.8%	¥200M ($1.3M)
2022-03-22	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	600.0K	¥2,040	+38.8%	¥1.2B ($7.9M)
2021-12-06	BUY	Market Buy	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	369.4K	¥2,093	+35.3%	¥516M ($3.3M)
2021-12-06	BUY	Market Buy	株式会社みなと銀行 Minato Bank, Ltd.	strategic	100.0K	¥2,093	+35.3%	¥6M ($38K)
2021-12-06	BUY	Market Buy	株式会社関西みらい銀行 Kansai Mirai Bank, Ltd.	strategic	100.0K	¥2,093	+35.3%	¥6M ($38K)
2021-12-06	BUY	Market Buy	株式会社りそな銀行 Resona Bank, Limited.	strategic	1.3M	¥2,093	+35.3%	¥64M ($416K)
2021-06-21	BUY	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	334.9K	¥2,658	+6.5%	¥149M ($960K)
2021-06-21	BUY	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	768.5K	¥2,658	+6.5%	¥603M ($3.9M)
2021-06-21	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	600.0K	¥2,658	+6.5%	¥37M ($240K)

Frequently asked questions

Who has been buying Joshin Denki Co., Ltd. stock?: 10 distinct investors have filed 10 disclosed large-shareholding filings in Joshin Denki Co., Ltd. (8173), most recently on 2025-02-20. 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 Joshin Denki Co., Ltd. have?: Joshin Denki Co., Ltd. has 10 buy-side and 13 sell-side disclosures on record, covering ¥530M ($3.4M) in total reported value, spanning 2021-06-21 to 2025-02-20.
Where does StockDrifts get Joshin Denki 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 Joshin Denki Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.