Abstract: A method of displaying patterns in historic stock price data on a graphical user interface includes simulating a plurality of sets of simulated trades for a stock. Each set includes a plurality of simulated trades extending for a common duration between simulated purchase and sale of the stock. Based on historical pricing information for the stock, the method includes determining a profit or loss that would have occurred if the simulated trade had been made. The method includes determining a fraction of simulated trades within each set that would have yielded a profit if the simulated trades had been made, and displaying a graphical representation of each set of simulated trades for which the fraction exceeds a predetermined minimum fraction, the graphical representation including a representation of the common start date and common duration corresponding to each set of simulated trades.