View Post CNBC | Ratings ‘Shark Tank’ Reruns Deliver CNBC’s Best Primetime Since 2008 By Merrill Knox on Jan. 9, 2014 - 3:02 PM After months of tinkering with different programming and entertainment shows, CNBC may have finally found the solution to boosting its primetime ratings: airing re-runs of a popular reality show. With “Shark Tank” Tues ...