RT Journal Article SR Electronic T1 Loosening the Long-Only Constraint JF Special Issues FD Institutional Investor Journals SP 142 OP 147 VO 2008 IS 1 A1 Will Cazalet YR 2008 UL https://pm-research.com/content/2008/1/142.abstract AB Active managers constantly seek ways to add alpha to their portfolios to boost performance. Almost invariably, they do so against a backdrop of constraints imposed upon them by investors and their advisers. These constraints typically include limits on how over-or underweight a manager's portfolio may be in a particular stock, sector, or country, as well as market capitalization or beta neutrality. But one of the most significant constraints imposed on many managers today is that which precludes them from holding short positions in their portfolio; relaxing this constraint, even by a modest amount, can have a significant effect on overall portfolio performance.