You can add $US3.7 billion hedge fund Tourbillon Capital to the list of firms wary of betting on President Trump's policies. "The next four years will be filled with a very wide range of outcomes," Jason Karp, founder of Tourbillon Capital Partners, wrote in a February investor letter reviewed by Business Insider. "We can confidently say after hundreds of man hours of research that it is highly unpredictable and unknowable."