The only thing I believe you will have to worry about is a forward split after F&F are released from conservatorship and government meddling.......and that's certainly no worry to shareholders. Reverse splits are primarily used to raise share price of troubled concerns attempting to get a different class of investor. They are rarely used by solid businesses. Fannie and Freddie will be rock solid after release and will have share prices approaching $100 so if you are concerned about anything, be concerned that your 1000 shares will be 4000 shares eventually!