Great advice Wayne. Certainly a lot of greeks to contend with in a straddle. I do have one question for you though, in your blog you mentioned "When earnings are released IV crushes.". Why is that ? Is it more a case of all the players anticipating that the stock will move during an anouncement and therefore IV creeps up, in anticipation, as the announcement date approaches, but then when the anouncement actually takes place, it turns out to be no big deal or the news have all been largely factored in and therefore IV drops significantly. A bit like "Buy the rumour and sell the fact". From your experience, is this IV crush after earnings a common occurance ?