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Multi Family OfficeInvests through funds, not into companiesLAST VERIFIED Oct 2026 · 6 SOURCES

Financière Dioclès

Independent Paris multi-family office founded in 2011, advising families on wealth structuring, financial allocation, real estate and administration.

Identity

HEADQUARTERS
Paris, France
FOUNDED
2011
OUTSIDE CAPITAL
Yes — also manages others' money

Overview

Financière Dioclès is an independent Paris advisory firm (SAS, SIREN 532 512 340) founded in 2011 by former professional footballer and private banker Romarin Billong, who is its majority shareholder and president. It describes itself as a multi-family office offering wealth planning, financial advice (asset allocation, fund and manager selection), real estate advice and administrative management. It is registered with ORIAS as a financial investment adviser (CIF) and insurance broker, and holds a real estate transaction card.

People

  • Iliès Berdal
    Wealth Adviser (financial research and investment solutions) · source
  • Romarin Billong
    Founder and President · source

Frequently asked questions

Financière Dioclès is a multi family office based in Paris, France, founded in 2011.

Financière Dioclès does not publicly state whether it puts its own money into companies or invests through funds.

Key people at Financière Dioclès include Romarin Billong (Founder and President) and Iliès Berdal (Wealth Adviser (financial research and investment solutions)).

Yes. Financière Dioclès manages capital from outside investors.