Charter fell 12% on April 27th, despite a buy rating from one of the very best on Wall Street. He had a sell on Sprint, which went up 8%. If the best in the business can be so wrong, should you be picking stocks? The average of all hedge funds many years does worse than the S & P. You literally would have done better with a flight of darts.
I'm leaving out the name because the guy really is good. Sooner or later it happens to everyone. This just happened to be particularly dramatic.
Knowledge is worth a great deal on Wall Street, I discovered, when I started DSL Prime in 1999. Several on the street made me their pet geek because I was in broadband, suddenly very hot. I got all the reports, could exchange ideas with almost everyone, and went to events where the waiters had better suits than I owned.