Profitable Trade: Proctor & Gamble (PG) Naked Puts

Today I closed the following transaction for a profit:

06/18/2012  STO 2 PG Jul 21 2012 60 Puts @.61   $110.49
07/13/2012  BTC 2 PG Jul 21 2012 60 Puts @.04   $    8.03

This is a 25 day trade that has used ~$2500 in margin maintenance. We earned $102.46. This equates to a 4.1% return on maintenance or 60% annual. Thank you Bill Ackman!

I would have liked to have rolled the 60's each month but the stock's sudden rise made me want to take a wait and see approach.