(In this study, the benchmark is defined as the traditional buy-and-hold method where we allocate one's capital in equal proportion to each stock and the accumulated return is calculated as the product of the average daily returns of all the 10 stocks over the 10 years; i.e., an investor invests all the capital in the stocks initially and sell all of them only at the end of the course of investment.) This figure shows that the GA-based model gradually outperforms the benchmark and the performance discrepancy becomes quite significant at the end of year 2012.
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