François Durvye managed Pierre-Edouard Stérin's family office.
Claims of doubling Stérin's net worth are under scrutiny.
Doubts have emerged regarding Durvye's business credibility.
François Durvye's claims about doubling a billionaire's net worth raise credibility concerns.
François Durvye managed Pierre-Edouard Stérin's family office.
Claims of doubling Stérin's net worth are under scrutiny.
Doubts have emerged regarding Durvye's business credibility.