Ok 50k FRM, should behold for the entire month in order to get 0.5FRMx token? So the reward is based on the monthly, which every person will get equal opportunity for the people who are holding more than 50k FRM. FRMx is already more than 300$, which is a very good sign to buy FRM coin who has less no of coins.
You need to hold the FRM and FRMx at the moment the snapshot is taken. The reward allocation is based upon the snapshot data.