Bill Ackman has sold out of his position in Valeant Pharmaceuticals. Valeant represented one of the largest positions held by Ackman's Pershing Square and has lost approximately 90 percent of its value over the time Ackman held it.

Ackman sold his shares for just over 11.00. Bloomberg is reporting that the loss amounts to $2.8 billion just on the 18.1