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Single Family OfficePuts its own capital into companiesLAST VERIFIED Oct 2026 · 1 SOURCES

Thominvest

Also known as Thominvest Oy

Helsinki investment company Thominvest Oy, listed as the Jouhki family office; registered under its current business ID in 2015, with predecessor Thominvest companies dating to 1951.

USEFUL FOR Co-investors

Family & background

FAMILY
Jouhki
HEADQUARTERS
Helsinki, Finland
FOUNDED
1911

Investment approach

ROUTES
Companies (own capital)

Overview

Thominvest Oy is a Helsinki company whose main registered business line is other financial service activities; the current entity (business ID 2721850-1) was registered in 2015 and also uses the names Thomasset, Thomcapital and Proveniens. The trade register shows earlier companies named Thominvest Oy going back to 1951. Its official website blocks automated access, so its strategy, team and family ownership could not be confirmed from it.

People

  • Mats Söderström
    Managing Director · source

Frequently asked questions

Thominvest is a single family office based in Helsinki, Finland, founded in 1911.

Thominvest invests on behalf of the Jouhki family.

Thominvest invests its own capital into companies.

Thominvest invests in Climate & Energy, HealthTech, Fintech and Mobility & Logistics.

Key people at Thominvest include Mats Söderström (Managing Director).