Complex sentence: Peizer began his career as a bond trader in the Beverly Hills office of Drexel Burnham Lambert, where he was Michael Milken's protege and sat at the X-shaped trading desk that would become a symbol of the office.
Split into simpler sentences: Peizer began his career as a bond trader in the Beverly Hills office of Drexel Burnham Lambert, where he was Michael Milken's protege. At the X-shaped trading desk that would become a symbol of the office.