We investigate whether the returns of some industry portfolios predict the returns of other industry portfolios. We find a strong lead-lag structure which is statistically and economically significant. These findings suggest that information diffuses only gradually across industries. Moreover,...

Most portfolio selection rules based on the sample mean and covariance matrix perform poorly out-of-sample. Moreover, there is a growing body of evidence that such optimization rules are not able to beat simple rules of thumb, such as 1/N. Parameter uncertainty has been identified as one major...

We investigate the diversification benefits of combining commodities with a traditional equity portfolio, while considering higher order statistical moments and seasonality. The literature suggests that the in-sample diversification benefits of commodities in portfolio optimization are not...