I'm a professional institutional investor by day and an amateur investor managing my own personal portfolio outside of work. My personal investment strategy has been influenced by the writings of Joel Greenblatt, Seth Klarman, and Ben Graham. My personal strategy focuses on companies with high returns on invested capital, high EBIT yields, increasing free cash flows, and low valuations. I prefer companies that are trading at a meaningful discount to very conservative estimates of their intrinsic value - the proverbial "margin of safety." I also believe the only path to true outperformance is a concentrated portfolio of the best opportunities.