Geo Group (GEO) specializes in corrections, detention and mental health treatment. The stock got absolutely crushed in August when the Obama administration announced that it would pull prison operation contracts from private companies. That’s what the company does. The stock fell 40% in one day, plummeting from $32.29 to $19.51. It has since moved up to the mid-$20s, but there is no doubt that Trump’s win will change this stock’s fortune in 2017.