Bill Ackman has spent the last five years trying to drive the supplement company Herbalife out of business.He took a $1 billion short position in the company in December 2012, after which its stock dropped 10 percent in six seconds, which led to a temporary trading halt.He informed investors at a 3 ½-hour slide show presentation in Manhattan that same month in which he plodded through a 342-slide presentation that characterized the company not as a multilevel firm that marketing energy and diet drinks, vitamins and skin products but as “the best-managed pyramid scheme in the history of the world.”He...