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Single Family OfficeInvests its own capital directly in companiesLAST VERIFIED Oct 2026 · 4 SOURCES

Stockholm investment company founded in 1969 by Robert Weil; since 2017 a family office managing the Weil family's and its foundation's assets, mainly through direct investments.

USEFUL FOR Business owners seeking a long-term partner · Co-investors

Family & background

FAMILY
Weil
HEADQUARTERS
Stockholm, Sweden
FOUNDED
1969

Investment approach

ROUTES
Companies (own capital)
STRATEGIES
Direct investmentsPrivate equityPublic equitiesReal estate
INBOUND
Accepts submissions

Overview

Proventus AB was founded in Stockholm in 1969 and is owned by Robert Weil and his family. Since 2017 it has been organised as a family office that manages the assets of the Weil family and the Robert Weil Family Foundation. It invests across asset classes, including private and listed equities, fixed income, property and alternatives, mainly directly rather than through funds or external managers. In 1993 it acquired the Aritmos group and with it the sportswear brand Puma.

Investment thesis

An independent, contrarian investor acting in the 'white spots' of the capital market: from listed instruments with fundamental mispricing to special situations in private assets or companies, open to co-investments with entrepreneurs, industry specialists and other family offices.

People

  • Caj Tigerstedt
    CIO and Deputy CEO · source
  • Daniel Axmér
    Portfolio Manager · source
  • Joakim Walldoff
    Assistant Portfolio Manager · source
  • Robert Weil
    Chairman and Founder · source
  • Anna Karin Mårtensson
    CFO · source

Frequently asked questions

Proventus is a single family office based in Stockholm, Sweden, founded in 1969.

Proventus invests on behalf of the Weil family.

Proventus invests directly in companies, not through funds. Capital origin: one family's own capital. Stated strategies include direct investments, private equity, public equities and real estate.

Key people at Proventus include Robert Weil (Chairman and Founder), Caj Tigerstedt (CIO and Deputy CEO), Anna Karin Mårtensson (CFO) and Daniel Axmér (Portfolio Manager).

Proventus states that it accepts submissions through its official contact page.