A portfolio consists of two stocks: 30% of Stock 1 with standard deviation of 33.3% and 70% of Stock 2 with a standard deviation of 47.94%. The correlation of Stocks 1 and 2 is 0.4. What is the standard deviation of this portfolio? Enter as a percent and round to the nearest tenth of a percent. Why should an investor hold a portfolio rather than invest in a single stock? The investor can maximize risk for a given level of expected return. An investor can eliminate unsystematic risk. The investor can eliminate all risk while expecting a return that is greater than the risk-free rate. The investor can eliminate systematic risk, which is synonymous with company-specific risk