Marvel Entertainment's second quarter came in solid, posting a 60 percent increase in net income, and raising its full-year forecast on the boffo performance of "Iron Man" and "The Hulk".

But its stock - MVL - took a superhero-sized tumble, plummeting over 13 percent and ending the day down 11.5 percent. The problem? Marvel raised its full-year earnings outlook to between $1.55 per share and $1.75 per share on $450 million to $480 million in revenues. But those increases weren't as high as Wall Street analysts were expecting, and that's what caused the stock to dip.