Consider the following information for stocks A, B, and C. The returns on the three stocks are positively correlated, but they are not perfectly correlated. (That is, each of the correlation coefficients is between 0 and 1.)
Stock | Expected Return | Standard Deviation | Beta | ||
A | 8.78% | 14% | 0.8 | ||
B | 10.83 | 14 | 1.3 | ||
C | 12.47 | 14 | 1.7 |
Fund P has one-third of its funds invested in each of the three stocks. The risk-free rate is 5.5%, and the market is in equilibrium. (That is, required returns equal expected returns.)
a
Using stock A values
As per CAPM |
expected return = risk-free rate + beta * (Market risk premium) |
8.78 = 5.5 + 0.8 * (Market risk premium%) |
Market risk premium% = 4.1 |
b
Weight of A = 0.3333 |
Weight of B = 0.3333 |
Weight of C = 0.3333 |
Beta of Fund = Weight of A*Beta of A+Weight of B*Beta of B+Weight of C*Beta of C |
Beta of Fund = 0.8*0.3333+1.3*0.3333+1.7*0.3333 |
Beta of Fund = 1.27 |
c
Weight of A = 0.3333 |
Weight of B = 0.3333 |
Weight of C = 0.3333 |
Return of Fund = Weight of A*Return of A+Weight of B*Return of B+Weight of C*Return of C |
Return of Fund = 8.78*0.3333+10.83*0.3333+12.47*0.3333 |
Return of Fund = 10.69 |
d
As stocks are not perfectly correlated and as they have same std dev of 14%, due to diversification effect, std dev of portfolio should be lower than 14%
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