The model derives optimal portfolio strategies for different utility functions, when the investor continuously rebalances stocks, bonds and money market instruments. We investigate the bond/stock allocation puzzle (the ratio B/D increases with risk aversion according to popular advice but not according to the standard portfolio theory) about long-term horizon investing.
BAJEUX-BESNAINOU, I., JORDAN, J. and PORTAIT, R. (2000). On the Bond Stock Asset Allocation Puzzle. In: First World Congress of the Bachelier Finance Society.