Thesis (Ph.D.), Department of Finance and Management Science, Washington State UniversityThis dissertation consists of two separate yet related chapters that study the role of institutional investors in the financial market by investigating the relations between two risk-related firm characteristics and institutional trading.In chapter one, I examine the relation between ownership by institutional versus individual investors and beta asymmetry (the difference between downside beta and upside beta). I find beta asymmetry is negatively associated with institutional ownership. This inverse relation may be explained by two alternative hypotheses. First, institutional investors may be less willing (than individual investors) to hold stocks with ...