Ackman already went all in. Icahn is calling his bluff, he just using fear to make $$$. He has 10 years to settle his feud with Ackman, so why did he choose Herbalife? Because he think it has a better chance of destroying Ackman's bottom line and reputation. The shorts just think that only Ackman has relations with the regulators. What about Carl, he's been in this business much longer and more successful than Ackman? Even if Ackman win, there will still be a lot of pain waiting for him in the coming months. I don't plan to stay in long forever, but a couple months is enough for Carl to make Ackman's life miserable. There will always be a seller and buyer. Look at Netflix, who's the idiot that sold to Carl at below $60. Do you think these funds are smart? Think again.