Bill Ackman's latest presentation arguing Herbalife (HLF) operates as a pyramid scheme didn't impress investors, and the nutrition supplement maker's shares soared. On Monday, Ackman said he would ...

BOSTON, Feb 9 (Reuters) - Hedge fund manager William Ackman, who has a $1 billion short bet on Herbalife stock, on Tuesday released a video of former Herbalife sellers claiming the company misled them ...

In his latest attack on Herbalife, hedge fund activist Bill Ackman is taking aim at the company over bogus health claims made by sales people peddling its protein shakes and other weight-loss products ...