Quote from cnms2:
One way of doing this is to bet that a poorly performing company will surprise positively, or that a high flier will disappoint. There's no sure way of predicting it, but you'd get a bigger bang for your buck than if you bet the other way. A positive surprise of a high flier, as well as a negative surprise of a loser will have less effect on their stock price.
To increase your odds you could open an OTM bull spread to bet on a positive surprise (poor performers), and an OTM bear spread to bet on a negative surprise. Credit and debit spreads being synthetically equivalent, it doesn't matter which one you choose as long as you don't find an unarbitraged opportunity, but I prefer debit spreads because the interest rate factored into the option prices is always better than the one I get for my cash from my broker.