Question

Returns on stocks X and Y are listed below: Period 1 2 3 4 5 6...

Returns on stocks X and Y are listed below:

Period 1 2 3 4 5 6 7
Stock X 4% 7% -2% 40% 0% 10% -1%
Stock Y 2% -5% 7% 4% 6% 11% -4%

Consider a portfolio of 10% stock X and 90% stock Y.

What is the mean of portfolio returns?

Please specify your answer in decimal terms and round your answer to the nearest thousandth (e.g., enter 12.3 percent as 0.123).

Homework Answers

Answer #1

Return = Return of X * Weight of X + Return of Y * Weight of Y

Period 1 = 4% * 0.10 + 2% * 0.90 = 2.2%

Period 2 = 7% * 0.10 + (-5%) * 0.90 = -3.8

Period 3 = (-2)% * 0.10 + 7% * 0.90 = 6.1%

Period 4 = 40% * 0.10 + 4% * 0.90 = 7.6%

Period 5 = 0% * 0.10 + 6% * 0.90 = 5.4%

Period 6 = 10% * 0.10 + 11% * 0.90 = 10.9%

Period 7 = (-1%) * 0.10 + (-4%) * 0.90 = -3.7%

Mean = Sum of terms / No of terms

= 2.2% + (-3.8%) + 6.1% + 7.6% + 5.4% + 10.9% + (-3.7) / 7

= 24.70 / 7

= 3.53%

Mean Return of the portfolio = 3.53%

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