Journal of Investment Strategies

Risk.net

Risk without return

Lisa R. Goldberg and Ola Mahmoud

ABSTRACT

Risk-only investment strategies have been growing in popularity as traditional investment strategies have fallen short of return targets over the last decade. However, risk-based investors should be aware of four things. First, theoretical considerations and empirical studies show that apparently distinct risk-based investment strategies are manifestations of a single effect. Second, turnover and associated transaction costs can be a substantial drag on return. Third, capital diversification benefits may be reduced. Fourth, there is an apparent connection between performance and risk diversification. To analyze risk diversification benefits consistently, we introduce the risk diversification index, which measures risk concentrations and complements the Herfindahl-Hirschman index for capital concentrations.

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