Peter Matheos is a Global Head of Investment Risk at AllianceBernstein. Colleagues describe him as "As a manager of quants, Peter provides that rare combination of gentle guidance and openness that makes deep analysis possible. He was always willing to explore new techniques and he always knew when it was time to terminate a line of inquiry. And he has a rare combination of people, verbal and quantitative skills that allow him to communicate results to people at all levels. I would welcome the opportunity to work for Peter again."