In Modem Portfolio Management, Leibowitz and his coauthors offer new strategies for institutional investors who want to manage their portfolios more actively by using 130/30 investment techniques. The 130/30 framework is a natural extension of the basic long-only benchmark-relative strategy that is so widely practiced. This approach seeks to exploit the opportunities that exist between the more efficient long only market and the less efficient short market. This book shows how 130/30 strategies allow asset owners and asset managers to more fully exploit an active manager's information set.