Answer :
d. portfolio beta is the measurement of risk for a collection of stocks for an investor.
According to the proportions of the investments in the portfolio, the beta of a portfolio is the weighted total of the betas of the individual assets.
For instance, if 50% of the capital is invested in stock A, which has a beta of 2.00, and 50% is invested in stock B, which has a beta of 1.00, the portfolio's beta is 1.50.
According to the individual stock betas of the securities that make up a portfolio, portfolio beta describes the relative volatility of a portfolio of individual securities when viewed as a whole.
A portfolio with a beta of 1.05 in relation to the S&P 500 is predicted to increase by 10.5% if the S&P's excess return increases by 10%.
To know more about portfolio beta:
https://brainly.com/question/18760065
#SPJ4