PROBLEM TO BE SOLVED: To make a diversified investment in gold and platinum by an optimum purchase ratio.;SOLUTION: An asset management device includes: a storage part 13 storing a purchase ratio determination table 131 describing the purchase ratio of gold and the purchase ratio of platinum corresponding to a price difference for which the price of the prescribed weight of gold is subtracted from the price of the prescribed weight of platinum; and a control part 14 for receiving the current price of the prescribed weight of platinum and the current price of the prescribed weight of gold from a host computer 2, calculating the price difference by subtracting the current price of gold from the current price of platinum, retrieving the price difference in the purchase ratio determination table 131 on the basis of the price difference, extracting the purchase ratio of gold and the purchase ratio of platinum corresponding to the price difference, and purchasing gold and platinum on the basis of the purchase ratio of gold and the purchase ratio of platinum.;COPYRIGHT: (C)2013,JPO&INPIT
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