Billionaire hedge fund manager Bill Ackman just wrapped up his latest Herbalife presentation. Ackman, who runs Pershing Square Capital, gave what he called "the most important presentation" of his career. In shorting Herbalife to zero, he's gone as far as comparing the company to the Nazis. But today the market laughed at him: The stock surged 15% as he spoke. There were hundreds of folks gathered at the AXA Equitable Building in Midtown Manhattan. Even Ackman's father was in attendance. Thousands of people tuned in via a webcast. For more than a year, Ackman has been loudly short Herbalife — a maker of nutrition ... (full story)