Who has been buying Prodelight Co.,Ltd. stock?

4 distinct investors have filed 7 disclosed large-shareholding filings in Prodelight Co.,Ltd. (5580), most recently on 2025-11-26. 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 Prodelight Co.,Ltd. have?

Prodelight Co.,Ltd. has 7 buy-side and 3 sell-side disclosures on record, covering ¥1.9B ($12.4M) in total reported value, spanning 2023-06-28 to 2025-11-26.

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.

Prodelight Co.,Ltd. 5580

Company

株式会社プロディライトProdelight Co.,Ltd.

Investors

Buys

Total Value

¥1.9B ($12.4M)

Avg Return

+14.37%

Last Filing

2025-11-26

Prodelight Co.,Ltd. (5580) has 7 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥1.9B ($12.4M) in reported transaction value. The earliest filing StockDrifts holds for Prodelight Co.,Ltd. is dated 2023-06-28; the most recent is 2025-11-26. Across these filings the average return since disclosure is +14.37%, 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
2026-07-22	BUY	unknown	トビラシステムズ株式会社 Tobila Systems Inc.	strategic	100.0K	¥1,643	-7.2%	¥164M ($1.1M)
2026-07-21	BUY	unknown	川田友也 YUYA KAWATA	strategic	100.0K	¥1,605	-	¥160M ($1.0M)
2026-07-21	SELL	unknown	川田友也 YUYA KAWATA	strategic	100.0K	¥1,605	+5.0%	¥160M ($1.0M)
2025-11-26	SELL	unknown	川田友也 Kawata, Yuuya	activist	200.0K	¥1,501	-1.5%	¥9M ($60K)
2025-01-21	BUY	Market Buy	株式会社Wiz 代表取締役山﨑俊 Wiz Co.,Ltd.	passive	155.0K	¥977	+56.0%	¥21M ($136K)
2024-10-31	BUY	Market Buy	株式会社Wiz 代表取締役山﨑俊 Wiz Co.,Ltd.	passive	131.3K	¥1,078	+41.4%	¥25M ($160K)
2024-10-03	BUY	Market Buy	株式会社Wiz 代表取締役山﨑俊 Wiz Co.,Ltd.	passive	108.3K	¥1,022	-	¥20M ($127K)
2024-10-03	BUY	Market Buy	株式会社Wiz Wiz Co.,Ltd.	passive	108.3K	¥1,022	+49.1%	¥20M ($127K)
2024-08-09	BUY	Market Buy	株式会社Wiz Wiz Co.,Ltd.	passive	89.0K	¥881	+73.0%	¥78M ($506K)
2024-07-10	SELL	unknown	川田友也 Kawata, Yuuya	activist	200.0K	¥1,200	-27.0%	¥11M ($71K)
2024-07-09	SELL	negotiated	日本ビジネスシステムズ株式会社 Japan Business Systems, Inc.	strategic	100.0K	¥1,229	-24.0%	¥6M ($36K)
2023-07-04	BUY	unknown	小南秀光 Kominami, Hidemitsu	activist	600.0K	¥2,081	-26.8%	¥1.2B ($8.1M)
2023-07-04	BUY	unknown	川田友也 Kawata, Yuuya	activist	200.0K	¥2,081	-26.8%	¥416M ($2.7M)
2023-06-28	BUY	negotiated	日本ビジネスシステムズ株式会社 Japan Business Systems, Inc.	strategic	100.0K	¥2,399	-36.5%	¥240M ($1.5M)

Frequently asked questions

Who has been buying Prodelight Co.,Ltd. stock?: 4 distinct investors have filed 7 disclosed large-shareholding filings in Prodelight Co.,Ltd. (5580), most recently on 2025-11-26. 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 Prodelight Co.,Ltd. have?: Prodelight Co.,Ltd. has 7 buy-side and 3 sell-side disclosures on record, covering ¥1.9B ($12.4M) in total reported value, spanning 2023-06-28 to 2025-11-26.
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.