How does early assignment effect your spread positions? From my perspective (that of a newbie), it seems that if you put a spread on and your get assigned on the short leg then you lose that particular profit opportunity. Basically, you would have to start over from scratch. Is this true? Specifically, I have been looking at trading some calendar spreads but I don't like the idea of putting on a position only to have the trade interrupted before it has reached its full profit potential. When you are evaluating your trade opportunities, do you use the probability of early assignment as part of your selection criteria? Are there any tips for avoiding/minimizing the chances for getting assigned? Thanks!