Carson Block thinks before he speaks. The founder and head of Muddy Waters Research has shorted everything from fraudulent Chinese forestry giant Sino-Forest to his most recent target, a regional bank called Bank of the Ozarks. The process of finding and researching these shorts is a massive undertaking, Block told Business Insider. It's also exciting. "It's a bit like solving a puzzle," Block told us. "You're really trying to find the pieces and how they match together to make a clear picture of just what the company is doing." Join the conversation about this story » NOW WATCH: FORMER GREEK FINANCE MINISTER: The single largest threat to the global economy