A financial data analysis system comprises a computer having a communication means for obtaining data related to a security; means for storing the data in memory; means for obtaining a second data point and means for storing the second data point in memory; means for comparing the data from the data points with data of an additional data point, which is randomly chosen from between the data points; and a display means to display the compared data. The system orders the randomly chosen data points prior to comparing data, then displays it as, for example, a table, spreadsheet export file, or graph. The compared data can be exported to a method of analyzing financial data. An individual can track a securities portfolio, monitor performance and make investment decisions based on performance. This invention may also analyze non-financial data.