A collection of financial assets and securities is referred to as a portfolio. Most individuals and institutions invest in a portfolio, making portfolio risk analysis an integral part of the field of finance. Just like stand-alone assets and securities, portfolios are also exposed to risk. Portfolio risk refers to the possibility that an investment portfolio will not generate the investor's expected rate of return. Analyzing portfolio risk and return involves the understanding of expected returns from a portfolio. Consider the following case: Andre is an amateur investor who holds a small portfolio consisting of only four stocks. The stock holdings in his portfolio are shown in the following table: Stock Percentage of Portfolio Expected Return Standard Deviation Artemis Inc. 20% 6.00% 29.00% Babish & Co. 30% 14.00% 33.00% Cornell Industries 35% 11.00% 36.00% Danforth Motors 15% 3.00% 38.00% What is the expected return on Andre's stock portfolio? 7.28% 9.70% 13.10% 14.55% Stock Percentage of Portfolio Expected Return Standard Deviation Artemis Inc. 20% 6.00% 29.00% Babish & Co. 30% 14.00% 33.00% Cornell Industries 35% 11.00% 36.00% Danforth Motors 15% 3.00% 38.00% What is the expected return on Andre's stock portfolio? 7.28% 9.70% 13.10% 14.55% = 0.4) with each of the other stocks. If the weighted average of the risk Suppose each stock in Andre's portfolio has a correlation coefficient of 0.4 (p of the individual securities (as measured by their standard deviations) included in the partially diversified four-stock portfolio is 34%, the portfolio's standard deviation (op) most likely is 34%.