A system and method for automated selection of securities within an index for purchase or sale. The system and method according to certain embodiments of the present invention select securities within and index for purchase based on the percentage differential of the price of each security within the index and the 52-week high price. A target sell price is determined based on a pre-selected percentage increase of over the purchase price of the selected security. Once the market price of the selected security reaches the target sell price, the system and method according to certain embodiments of the present invention sells the selected security. The proceeds of the sale of the selected security may be reinvested according to the second selected security within the index.