Behr, Patrick; Guettler, Andre; Truebenbach, Fabian - In: Journal of Banking & Finance 36 (2012) 5, pp. 1414-1423
Minimum-variance portfolios, which ignore the mean and focus on the (co)variances of asset returns, outperform mean–variance approaches in out-of-sample tests. Despite these promising results, minimum-variance policies fail to deliver a superior performance compared with the simple 1/N rule....