PROBLEM TO BE SOLVED: To quickly display a chart of market prices without performing an installation operation.SOLUTION: A market price display program is a market price display program which operates on a web browser and displays the past market prices of merchandise, and makes a computer for executing a plurality of different processing by a plurality of threads in parallel function as a period reception part 241 for receiving a display period of the past market prices of the merchandise, a market price data acquisition part 242 for acquiring market price data corresponding to the display period received by the period reception part 241 from a web server 1 by using a thread different from that of the other processing, and storing the acquired market price data in a web storage 231 on the computer accessible by the web browser, and a chart drawing part 243 for drawing a chart of merchandise corresponding to the display period on the basis of the market price data acquired by the market price data acquisition part 242.
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