Rate of change calculations based upon the price of the security. E.g., The moving average of the price for today should be compared against the moving average of the price for x periods in the past. This will screen out those securities which have experienced a steady increase in price over the periods nominated. Relative strength calculations can be used to determine the strength of a security against a nominated index or another security. This method is useful to determine the strongest performing securities against a standard index. Once again the strongest performing securities would be the ones requiring further analysis.