Chanos spoke at the Delivering Alpha conference in New York. : Jim Chanos, head of Kynikos Associates, spoke Wednesday at the Delivering Alpha conference in New York. Chanos has previously disclosed his bets against the two companies, with his position against Mednax in place since mid-2017 and his Envision short going since the beginning of 2018. Chanos has called the companies "rent seekers" in the health-care system and charged again Wednesday that they are shuffling money to cover up how poorly the businesses are performing.