# Suppose you hold a portfolio consisting of a \$10,000 investment in each of 8 different common stocks. The portfolio's beta is 1.25. Now suppose you decided to sell one of your stocks that has a beta of 1.00 and to use the proceeds to buy a replacement stock with a beta of 1.55. What would the portfolio's new beta be? Do not round your intermediate calculations.

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Suppose you hold a portfolio consisting of a \$10,000 investment in each of 8 different common stocks. The portfolio's beta is 1.25. Now suppose you decided to sell one of your stocks that has a beta of 1.00 and to use the proceeds to buy a replacement stock with a beta of 1.55. What would the portfolio's new beta be? Do not round your intermediate calculations.

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Step 1

Considering equal investment in each of the eight stocks of a portfolio, weight for each stock can be calculated as below:

Step 2

Portfolio beta is the weighted sum of each stock’s beta, therefore, change in portfolio beta is:

Step 3

New portfolio beta is , old beta plus change in po...

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