Question: (a) Create monthly net returns for Disney, the S&P 500 index, and the risk-free rate. (b) Calculate excess returns for Disney stock and for the
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(a) Create monthly net returns for Disney, the S&P 500 index, and the risk-free rate.
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(b) Calculate excess returns for Disney stock and for the S&P 500 index by subtracting, in each month, the monthly treasury return from the stock/index return.
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(c) Calculate and report the beta of Disney stock using the formula:
= Cov(r,rM)/Var(rM ) = Cov(r,rM)/m2 = Corr(r,rM)SD(r)m2/SD(rM )
Excel functions:
CORREL(array1,array2) STDEV.S(number1,number2,...)
COVARIANCE.S(array1,array2)
| DIS | S&P 500 | T-Bill | |
| Date | Price | Price | Price |
| Dec-15 | 105.08 | 2043.94 | 1248.086 |
| Jan-16 | 95.82 | 1940.24 | 1251.238 |
| Feb-16 | 95.52 | 1932.23 | 1251.728 |
| Mar-16 | 99.31 | 2059.74 | 1253.442 |
| Apr-16 | 103.26 | 2065.3 | 1254.277 |
| May-16 | 99.22 | 2096.96 | 1253.781 |
| Jun-16 | 97.82 | 2098.86 | 1257.529 |
| Jul-16 | 95.95 | 2173.6 | 1256.977 |
| Aug-16 | 94.46 | 2170.95 | 1256.835 |
| Sep-16 | 92.86 | 2168.27 | 1257.572 |
| Oct-16 | 92.69 | 2126.15 | 1258.268 |
| Nov-16 | 99.12 | 2198.81 | 1256.985 |
| Dec-16 | 104.22 | 2238.83 | 1257.67 |
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