In a contrarian investment strategy, investors deliberately buck the direction of the market by selling when others are buying and purchasing when most investors are selling. Warren Buffett, chairman and CEO of Berkshire Hathaway, is renowned as a contrarian investor. Investors who hold a contrary opinion think that people who claim the market is rising only do so when they are completely invested and have no more purchasing power. The market has reached its pinnacle at this time. Therefore, when forecasters foresee a decline, they have already sold out and the market can only rise from here.