Gelber, chief executive officer of the Gelber Group, began his career on the floor of the CBOT (Chicago Board of Trade) as a broker and trader in 1977. CBOT to broker a substantial and respected in America."Probably one of the biggest mistakes I ever made was changed from broker to trader" he said. "I am a representative of a broker / broker who bear and have sufficient ability, good skills in dealing with people who are used to trading and face the situation of the various markets .."