Investment Portfolio: Contribution of Stocks to Weighted Average Return

Stocks Contribution to Portfolio Weighted Average Return

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Question

You are examining a portfolio composed of 33% money-market investments, 9.5% bonds, and 57.5% stocks. Last year, the return on the money-market investments was 4%; the return on bonds was 9%, and the return on stocks was -11%. What is the contribution of stocks toward the portfolio weighted average return?

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A. B. C. D.

D

The portfolio weighted-average mean return is equal to the sum (as i goes from 1 to n) of w_i * X_i, where w_i is the percentage weight in the portfolio of the ith asset, and X_i is the investment return of the ith asset. The contribution of any asset will equal its weight in the portfolio times its return. Here, we get 0.575 * -0.11

= -6.325%.

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