Grauer has been chairman of Bloomberg, the global business and financial information company, since March 2001 and joined full-time as president and chief executive in March 2002 .

Before joining Bloomberg, Grauer was a managing director of Donaldson, Lufkin & Jenrette from 1992 to 2000 when DLJ was acquired by Credit Suisse First Boston. 

He is a founder of DLJ Merchant Banking Partners and DLJ Investment Partners and also served as a managing director and senior partner of CSFB Private Equity.