Suppose I do an analysis and find a stock with a high Kurtosis (makes good deviations) and it is skewed to the right substantially. So I know that there are more strong movements upwards , whereas the down movement tend to take place less often and aren't perhaps as strong (even if they are, the stop loss can stop that) . So, it is a good stock to trade, but how do you go about devising the best strategy for trading? And how much data do you account for...if the stock has a long history, then prices inculcate different times, so to absorb say the data 20 years ago and look at the 'whole' would make sense? I mean how do you define the cutoff period in terms of data?