Is this George Soros and Carl Icahn-backed firm running a "pyramid scheme"? 13 March 2014 | By Sophie Hobson George Soros and Carl Icahn both hold stakes in it, but controversial US firm Herbalife has come under consistent fire from rival investor William Ackman over its allegedly dubious operations. Now it’s being investigated by the US Federal Trade Commission (FTC) over claims it might be running a “pyramid scheme”. The key accusation against Herbalife, which makes weight loss and nutritional supplements and is listed on the New York Stock Exchange, is that it makes most of its money from signing...