ECONOMICS (CBSE/UGC NET)

Detailed explanation-1: -Portfolio beta describes relative volatilityof an individual securities portfolio, taken as a whole, as measured by the individual stock betas of the securities making it up. A beta of 1.05 relative to the S&P 500 implies that if the S&P’s excess return increases by 10% the portfolio is expected to increase by 10.5%.

Detailed explanation-2: -Beta is the standard CAPM measure of systematic risk. It gauges the tendency of the return of a security to move in parallel with the return of the stock market as a whole. One way to think of beta is as a gauge of a security’s volatility relative to the market’s volatility.

Detailed explanation-3: -The portfolio risk is also measured by taking the Standard Deviation of variance of actual returns of that portfolio over time. The variability of returns is proportional to the portfolio’s risk. This risk can be measured by calculating the Standard Deviation of this variability.

Detailed explanation-4: -The five principal risk measures include the alpha, beta, R-squared, standard deviation, and Sharpe ratio.