Mark Hawtin, a former partner at London hedge fund manager Marshall Wace Asset Management, has joined asset manager GAM to run an equity long/short portfolio, which will invest in, among other areas, shares of companies that have "suffered unfairly" from deleveraging in the credit crunch.

Hawtin will start at GAM, part of Swiss bank Julius Baer, in London as investment director on October 1, having worked as a consultant to various listed firms for the past year.