Financial decisions are important, since they have a great impact on our well-being. This is especially true for the choice of the portfolio composition. In the long-run, small differences in the composition of the portfolio can accumulate to big differences in wealth. It is thus of great interest to know how to take optimal investment decisions. The objective of this book is to develop an application of optimal strategic asset allocation based on a simulation approach. The author shows how a Swiss long-term investor should structure his portfolio consisting of cash, bonds, equities, commodities, and real estate. In addition, he answers questions as for example: What is the difference between the alloca-tion of a long-term and a short-term investor? In how far does the allocation depend on the investment horizon? What is the average allocation and risk aversion of a representative Swiss investor?