Who has been buying Vertex Corporation stock?

2 distinct investors have filed 7 disclosed large-shareholding filings in Vertex Corporation (5290), most recently on 2025-09-29. 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 Vertex Corporation have?

Vertex Corporation has 7 buy-side and 3 sell-side disclosures on record, covering ¥494M ($3.2M) in total reported value, spanning 2022-11-04 to 2025-09-29.

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.

Vertex Corporation 5290

Company

株式会社ベルテクスコーポレーションVertex Corporation

Investors

Buys

Total Value

¥494M ($3.2M)

Avg Return

+173.80%

Last Filing

2025-09-29

Vertex Corporation (5290) has 7 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 2 distinct investors. Together those filings cover ¥494M ($3.2M) in reported transaction value. The earliest filing StockDrifts holds for Vertex Corporation is dated 2022-11-04; the most recent is 2025-09-29. Across these filings the average return since disclosure is +173.80%, 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
2025-09-29	SELL	Market Buy	株式会社ヴァレックス・パートナーズ VARECS Partners Limited	activist	7.1M	¥1,530	+18.8%	¥1.1B ($6.9M)
2025-07-25	SELL	Market Buy	株式会社ヴァレックス・パートナーズ VARECS Partners Limited	activist	3.9M	¥1,344	+7.5%	¥399M ($2.6M)
2024-05-24	BUY	Market Buy	株式会社ヴァレックス・パートナーズ VARECS Partners Limited	activist	4.2M	¥899	+38.3%	¥270M ($1.7M)
2024-01-11	SELL	unknown	ユナイテッド・マネージャーズ・ジャパン株式会社 United Managers Japan Inc.	unknown	0	¥825	-50.7%	¥1.5B ($9.9M)
2024-01-11	BUY	Market Buy	株式会社ヴァレックス・パートナーズ VARECS Partners Limited	activist	4.1M	¥825	+50.7%	¥1.8B ($11.5M)
2023-08-23	BUY	Market Buy	ユナイテッド・マネージャーズ・ジャパン株式会社 United Managers Japan Inc.	activist	1.9M	¥734	+69.3%	¥224M ($1.4M)
2023-06-20	BUY	Market Buy	株式会社ヴァレックス・パートナーズ VARECS Partners Limited	activist	1.9M	¥764.5	+62.6%	¥315M ($2.0M)
2022-11-21	BUY	Market Buy	ユナイテッド・マネージャーズ・ジャパン株式会社 United Managers Japan Inc.	activist	1.6M	¥644	+93.0%	¥16M ($102K)
2022-11-10	BUY	Market Buy	株式会社ヴァレックス・パートナーズ VARECS Partners Limited	activist	1.5M	¥626.5	+98.4%	¥962M ($6.2M)
2022-11-04	BUY	Market Buy	ユナイテッド・マネージャーズ・ジャパン株式会社 United Managers Japan Inc.	activist	1.5M	¥625	+98.9%	¥957M ($6.2M)

Frequently asked questions

Who has been buying Vertex Corporation stock?: 2 distinct investors have filed 7 disclosed large-shareholding filings in Vertex Corporation (5290), most recently on 2025-09-29. 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 Vertex Corporation have?: Vertex Corporation has 7 buy-side and 3 sell-side disclosures on record, covering ¥494M ($3.2M) in total reported value, spanning 2022-11-04 to 2025-09-29.
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.