Carl Icahn defends Ackman, slams Lipton By: CNBC.com News April 23, 2014 at 12:02 PM EDT Maybe it was the martini that helped activist investor Carl Icahn publicly support nemesis Bill Ackman, but he still called Marty Lipton "dead wrong." Read More >> Related Stocks: Herbalife Ltd Icahn Enterprises Valeant Pharmaceuticals International, Inc.