Momentum as a factor was popularized some years after the famous Fama French 3 factor model. Currently it is widely accepted as the 4 factor in this model.
But what is it? Many approach momentum as the recent trend of the stock price over the last 6 months. However, you can quantify this effect in different ways.
A very systematic approach is to check the differences between what market analysts forecast and the real values published quarterly by corporations. Here we present the Top 5 momentum stocks by @genuineimpactapp
These are all great names but bot necessarily offering great entry prices. This is why is useful to have tools that let you choose stocks that provide a balance between the factors that matter the most.