Icahn wasn't the only one to pile onto Ackman and his losing bet on Herbalife. Shortly after Ackman announced he was shorting the company, another high-profile hedge fund manager, Dan Loeb, bought up shares of Herbalife. He called Ackman's arguments "preposterous."
Loeb sold his shares a few months later for a profit, but continued to stick it to Ackman. In July, Loeb posted from his Bloomberg terminal, "New HLF product: The Herbalife Enema, administered by Uncle Carl." Ackman said he was disappointed in his former friend.