Dynamic price range summary symbol generation, display, method, and device

Abstract

A method of updating a displayed symbol representative of changes in price during a time period, the method includes receiving, for each intra-time period of a plurality of intra-time periods in the time period, intra-time price data including an intra-time open price and an intra-time close price corresponding to the intra-time period, wherein the intra-time close price of the Nth intra-time period is a close price of the time period and N is an integer greater than one, determining, an open price of the time period from intra-time price data including an intra-time open price and an intra-time close price corresponding to a received (N−K)th intra-time period, wherein K is an integer less than N and the time period includes a plurality of intra-time periods ranging from the (N−K)th intra-time period to the Nth intra-time period, determining an average price from the intra-time close price of each intra-time period of the plurality of intra-time periods in the time period, determining a total-above-average-price counter value by determining, for each particular intra-time period of the plurality of intra-time periods in the time period, whether the intra-time close price of the particular intra-time period was greater than the average price, so that the total-above-average-price counter value indicates a number of the intra-time periods for which the intra-time close price was greater than the average price, erasing the displayed symbol at a particular position, and generating and displaying a new symbol at the particular position, which illustrates a new relationship between the total-above-average-price counter value and the plurality of intra-time periods in the time period.