The most popular portfolio performance measures are the Sharpe ratio and alpha. While the Sharpe ratio is optimal under the CAPM assumptions of normal return distributions and unlimited borrowing at the risk-free rate, we find that it is not well aligned with investors' preferences in more...

Diversification across time means changing the asset allocation from one period to another. We show that diversification across time is inferior to a portfolio with the same average asset allocation, held constant over time: it leads to a lower geometric mean, implying that in the long-run it...

Chapter 1: Introduction -- Chapter 2: Criteria for Mutual Fund Selection -- Chapter 3: Investment for Intermediate and Long Horizons -- Chapter 4: Estimating Future Performance – The Shrinkage Adjusted Sharpe Ratio -- Chapter 5: Active Versus Passive Investment -- Chapter 6: Target Date Funds,...