Bill Ackman, head of Pershing Square Capital Management said on Monday he would deliver a "death blow" to Herbalife (HLF). But, it looks like his threat fell on deaf ears. After Tuesday's investor presentation, Herbalife shares regained the 11% loss they incurred Monday after Ackman made the announcement. Several well known investors, including George Soros and Carl Icahn, have been betting against Ackman. In the presentation that was live-streamed on the Internet, Ackman again attacked Herbalife calling its business a pyramid scheme. TheStreet's Antoine Gara was at the presentation and speaks with TheStreet's Susannah Lee about the details.