  This paper presents a numerical model to solve the problem of cash
accumulation strategies for products with an unknown future price, like assets.
Stock prices are modeled by a discretized Wiener Process, and by the means of
ordinary integrals this Wiener Process will be exactly matched at a preset
terminal time. Three applications of the model are presented: accumulating cash
for a single asset, for set of different assets, and for a proportion of the
excess achieved by a certain asset. Furthermore, an analysis of the efficiency
of the model as function of different parameters is performed.
