The former chairman of the Securities and Exchange Commission and co-founder of investment bank Donaldson, Lufkin & Jenrette (DLJ) will work with Perella Weinberg partners on strategic issues as well as organizational and client-related matters.
Joseph Perella, chairman of Perella Weinberg Partners, said: "We are delighted to have someone with Bill's extraordinary reputation, stature and wealth of experience as part of our firm.
"His role as a leader in the financial services industry, including the co-founding of DLJ, and his experience in leadership roles in government and education, will be extremely valuable to us as we continue to grow the business of Perella Weinberg Partners."
Perella Weinberg was launched in June 2006 as a financial services firm providing corporate advisory and asset management services and it has raised $1.1 billion from a global group of investors to establish its operations. It currently has 20 partners and over 90 employees in its London and New York offices.