In earnings season especially, people will tend to ask first...

In earnings season especially, people will tend to ask first and analyze later. So I think what investors should be doing is looking at the earnings reports beyond the headline numbers. A stock may be off sharply for a temporary reason, a shortage of a component that is a terrific buying opportunity. A stock may rocket up again for a non-recurring factor that is a chance to sell. Investors should just take advantage of the opportunity to sit back and capitalize.