EXAM 2 TOPIC 8 Flashcards
standard deviation
Standard deviation
HOLDING PERIOD RETURN a)
BREAKDOWN Holding Period Return FORMULA INTO FORMULAS FOR DIVIDEND YIELD AND CAPITAL GAINS YIELD
DIVIDEND YIELD FORMULA b)
CAPITAL GAINS FORMULA c)
FISHER EFFECT EX ANTE AND EX POST FORMULAS
FISHER EFFECT IS USED TO FIND ___?
REAL RISK FREE RATE OF INTEREST
REAL RATE OF INTEREST FORMULA
standard deviation
standard deviation
expected return of the portfolio
Further, suppose that 40% of the portfolio is invested in Stock X and 60% in Stock Y. In order to calculate the standard deviation of the portfolio, first we need to calculate the expected returns of both stocks:
E[Rx]=.21×(−2%)+.46×11%+.33×26%=13.22%E[Rx]=.21×(−2%)+.46×11%+.33×26%=13.22%
E[Ry]=.21×3%+.46×13%+.33×14%=11.23%E[Ry]=.21×3%+.46×13%+.33×14%=11.23%
The expected return on a portfolio is simply the weighted average of the returns on the individual assets. As such, the expected return on our example portfolio is:
E[Rp]=.4×13.22%+.6×11.23%=12%E[Rp]=.4×13.22%+.6×11.23%=12%
Next, calculate the standard deviations of each stock:
σx=√.21(−2%−13.22%)2+.46(11%−13.22%)2+.33(26%−13.22%)2=10.24%σx=.21(−2%−13.22%)2+.46(11%−13.22%)2+.33(26%−13.22%)2=10.24%
σy=√.21(3%−11.23%)2+.46(13%−11.23%)2+.33(14%−11.23%)2=4.27%σy=.21(3%−11.23%)2+.46(13%−11.23%)2+.33(14%−11.23%)2=4.27%
The covariance of the two stocks are:
COVx,y=.21×(−2%−13.22%)×(3%−11.23%)+.46×(11%−13.22%)×(13%−11.23%)+.33×(26%−13.22%)×(14%−11.23%)=36.18%COVx,y=.21×(−2%−13.22%)×(3%−11.23%)+.46×(11%−13.22%)×(13%−11.23%)+.33×(26%−13.22%)×(14%−11.23%)=36.18%
Given the standard deviation of each individual asset and the covariance of the two assets, the correlation coefficient of these stocks is:
ϱa,b=36.18%10.24%×4.27%=.82ϱa,b=36.18%10.24%×4.27%=.82
Therefore, the standard deviation of the portfolio is (using the correlation coefficient):
σp=√(.4)2×(10.24%)2+(.6)2×(4.27%)2+2×.4×.6×.8256×10.24%×4.27%=6.38%
beta definition
measures how correlated the firm’s returns are with the returns of the entire market’s returns
KAPM EQUATION
RISK FREE RATE =