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

3 distinct investors have filed 0 disclosed large-shareholding filings in Jason Co., Ltd. (3080), most recently on 2025-08-08. 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 Jason Co., Ltd. have?

Jason Co., Ltd. has 0 buy-side and 4 sell-side disclosures on record, spanning 2024-02-14 to 2025-08-08.

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.

Jason Co., Ltd. 3080

Company

株式会社ジェーソンJason Co., Ltd.

Investors

Buys

Total Value

—

Avg Return

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Last Filing

2025-08-08

Jason Co., Ltd. (3080) has 0 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 3 distinct investors. The earliest filing StockDrifts holds for Jason Co., Ltd. is dated 2024-02-14; the most recent is 2025-08-08.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2025-08-08	SELL	negotiated	太田万三彦 Masahiko Ota	activist	3.3M	¥692	-20.9%	¥89M ($572K)
2025-08-08	BUY	negotiated	太田磨草子 Masoko Ota	unknown	800.0K	¥692	-	¥554M ($3.6M)
2025-08-08	BUY	negotiated	株式会社太田興産 Ota Kosan Co., Ltd.	unknown	4.3M	¥692	-	¥3.0B ($19.1M)
2025-02-04	SELL	negotiated	太田万三彦 Masahiko Ota	activist	3.4M	¥707	-18.4%	¥297M ($1.9M)
2025-02-04	BUY	negotiated	太田磨草子 Masoko Ota	unknown	800.0K	¥707	-	¥566M ($3.6M)
2025-02-04	BUY	negotiated	株式会社太田興産 Ota Kosan Co., Ltd.	unknown	4.3M	¥707	-	¥3.0B ($19.5M)
2024-02-14	SELL	negotiated	太田万三彦 Masahiko Ota	activist	3.8M	¥674	-24.2%	¥472M ($3.0M)
2024-02-14	SELL	negotiated	太田万三彦 Masahiko Ota	activist	3.8M	¥674	-24.2%	¥472M ($3.0M)
2024-02-14	BUY	negotiated	太田磨草子 Masoko Ota	unknown	800.0K	¥674	-	¥539M ($3.5M)
2024-02-14	BUY	negotiated	株式会社太田興産 Ota Kosan Co., Ltd.	unknown	4.3M	¥674	-	¥2.9B ($18.6M)
2024-02-14	BUY	negotiated	太田磨草子 Masoko Ota	unknown	800.0K	¥674	-	¥539M ($3.5M)
2024-02-14	BUY	negotiated	株式会社太田興産 Ota Kosan Co., Ltd.	unknown	4.3M	¥674	-	¥2.9B ($18.6M)

Frequently asked questions

Who has been buying Jason Co., Ltd. stock?: 3 distinct investors have filed 0 disclosed large-shareholding filings in Jason Co., Ltd. (3080), most recently on 2025-08-08. 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 Jason Co., Ltd. have?: Jason Co., Ltd. has 0 buy-side and 4 sell-side disclosures on record, spanning 2024-02-14 to 2025-08-08.
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.