Kempf, Alexander; Korn, Olaf; Saßning, Sven - 2014 - Current Version: January 2014
We develop a new family of estimators of the covariance matrix that relies solely on forwardlooking information. It … historical estimates, index investing, and 1/N investing. The outperformance originates in crisis periods when information ow and … information asymmetry are high. Although the historical benchmark strategies improve when more recent data is used, they never …