The growing dominance of the core and explore model – a large passive index combined with a collection of high tracking error satellite portfolios – in conjunction with the growth of factor investing has renewed interest in how to allocate among different equity strategies. We study this...

Conventional wisdom holds that multiperiod portfolio optimization problems are best, if not only, solved by dynamic programming. But dynamic programming suffers from the curse of dimensionality whereby optimization becomes intractable as time horizon and number of assets increase, thereby...

I introduce a method of portfolio selection based on the idea that investment risk is not having enough wealth when you need it. Not having enough wealth translates into a required return. When you need wealth translates into an investment horizon. These two ingredients, when combined with...