Who has been buying ジャニス工業株式会社 stock?

6 distinct investors have filed 8 disclosed large-shareholding filings in ジャニス工業株式会社 (5342), most recently on 2026-03-27. 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 ジャニス工業株式会社 have?

ジャニス工業株式会社 has 8 buy-side and 1 sell-side disclosures on record, spanning 2021-09-10 to 2026-03-27.

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.

ジャニス工業株式会社 5342

Company

ジャニス工業株式会社

Investors

Buys

Total Value

—

Avg Return

—

Last Filing

2026-03-27

ジャニス工業株式会社 (5342) has 8 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 6 distinct investors. The earliest filing StockDrifts holds for ジャニス工業株式会社 is dated 2021-09-10; the most recent is 2026-03-27.

Price & insider activity (12 months)

No price data available

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-03-27	BUY	Market Buy	前田信	activist	100	-	-	-
2026-03-27	BUY	Market Buy	前田供子	activist	100	-	-	-
2026-03-27	BUY	Market Buy	前田浩	activist	100	-	-	-
2026-03-27	BUY	Market Buy	株式会社ニッソウ	activist	363.2K	-	-	-
2026-02-16	BUY	Market Buy	前田信	activist	100	-	-	-
2026-02-16	BUY	Market Buy	前田供子	activist	100	-	-	-
2026-02-16	BUY	Market Buy	前田浩	activist	100	-	-	-
2026-02-16	BUY	Market Buy	株式会社ニッソウ	activist	321.6K	-	-	-
2026-02-03	BUY	Market Buy	前田信	activist	100	-	-	-
2026-02-03	BUY	Market Buy	前田供子	activist	100	-	-	-
2026-02-03	BUY	Market Buy	前田浩	activist	100	-	-	-
2026-02-03	BUY	Market Buy	株式会社ニッソウ	activist	281.8K	-	-	-
2025-12-09	BUY	Market Buy	前田信	activist	100	-	-	-
2025-12-09	BUY	Market Buy	前田供子	activist	100	-	-	-
2025-12-09	BUY	Market Buy	前田浩	activist	100	-	-	-
2025-12-09	BUY	Market Buy	株式会社ニッソウ	activist	241.4K	-	-	-
2025-12-09	BUY	Market Buy	前田信	activist	100	-	-	-
2025-12-09	BUY	Market Buy	前田供子	activist	100	-	-	-
2025-12-09	BUY	Market Buy	前田浩	activist	100	-	-	-
2025-12-09	BUY	Market Buy	株式会社ニッソウ	activist	241.4K	-	-	-
2025-04-07	BUY	Market Buy	株式会社ニッソウ Nissou Co.,Ltd.	activist	202.4K	-	-	-
2021-09-10	BUY	Market Buy	ジャニス工業取引先持株会理事長山口茂樹 Shigeki Yamaguchi	other	474.4K	-	-	-
2021-09-10	SELL	unknown	ジャニス工業取引先持株会理事長山口茂樹 Shigeki Yamaguchi	other	0	-	-	-
2021-09-10	BUY	unknown	ジャニス工業取引先持株会理事長岩間健太郎 Kentarou Iwama	other	492.0K	-	-	-

Frequently asked questions

Who has been buying ジャニス工業株式会社 stock?: 6 distinct investors have filed 8 disclosed large-shareholding filings in ジャニス工業株式会社 (5342), most recently on 2026-03-27. 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 ジャニス工業株式会社 have?: ジャニス工業株式会社 has 8 buy-side and 1 sell-side disclosures on record, spanning 2021-09-10 to 2026-03-27.
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.