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Investment Analysis and
Portfolio Management
Prof. Rana Abdul Qudous
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Value Averaging
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month
share
price total value
share to
own share to buy/sell investment
Jan-09 4.64 100 21.55 21.55 -99.99
Feb-09 4.38 200 45.66 24.11 -105.60
Mar-09 4.56 300 65.79 20.13 -91.78Apr-09 4.25 400 94.12 28.33 -120.39
May-09 3.81 500 131.23 37.12 -141.41
Jun-09 3.19 600 188.09 56.85 -181.36
Jul-09 2.99 700 234.11 46.03 -137.62
Aug-09 3.6 800 222.22 -11.89 42.81Sep-09 4.7 900 191.49 -30.73 144.44
Oct-09 4.41 1000 226.76 35.27 -155.53
Nov-09 4.34 1100 253.46 26.70 -115.87
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Jan-10 5.26 1300 247.15 -8.72 45.84
Feb-10 4.54 1400 308.37 61.22 -277.95
Mar-10 5.38 1500 278.81 -29.56 159.03
Apr-10 7.47 1600 214.19 -64.62 482.71
May-10 7.39 1700 230.04 15.85 -117.14Jun-10 6.31 1800 285.26 55.22 -348.44
Jul-10 7.07 1900 268.74 -16.52 116.80
Aug-10 6.48 2000 308.64 39.90 -258.56
Sep-10 7.07 2100 297.03 -11.61 82.10
Oct-10 6.96 2200 316.09 19.06 -132.67
Nov-10 5.05 2300 455.45 139.35 -703.74
Dec-10 5.8 2400 413.79 -41.65 241.58
Jan -11 5.06 413.79 2093.78 -1684.03
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Jan-10 5.26 100 19.01 315.98 1662Feb-10 4.54 100 22.03 338.01 1535
Mar-10 5.38 100 18.59 356.60 1919
Apr-10 7.47 100 13.39 369.99 2764
May-10 7.39 100 13.53 383.52 2834
Jun-10 6.31 100 15.85 399.37 2520Jul-10 7.07 100 14.14 413.51 2924
Aug-10 6.48 100 15.43 428.94 2780
Sep-10 7.07 100 14.14 443.09 3133
Oct-10 6.96 100 14.37 457.45 3184
Nov-10 5.05 100 19.80 477.26 2410Dec-10 5.8 100 17.24 494.50 2868
11-Jan 5.06 494.5 2502
2400
Average 5.18 4.85
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Markowitz Portfolio Selection
Markowitz provided a comprehensive framework for analysis of portfolio
Portfolio of securities is an integrated whole, each securities complementing the
other
Consider both the characteristics of individual security and the relationshipbetween these securities.
Investors like return and dislike risk
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Find the set of portfolio that
Provides the minimum risk for every possible level of return.
The Efficient Set
Investor select from the efficient set that meets his/her requirements
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Maximize the expected return
Minimize the variance
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Minimize portfolio Risk
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Subject to:
A Stated Expected Return
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Covariancemeasures the extent to which two securities tend to move, or not move,
together.
The variance of an individual security is the sum of the probability-weighted
average of the squared differences between the securitys expected return and its
possible returns.
The standard deviation is the square root of the variance. Both variance and
standard deviation measure of total risk, including both systematic and specific risk.
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Correlation Co-efficient
A correlation of +1.0 would indicate perfect positive correlation, and a value of 1.0
would mean that the returns moved in a completely opposite direction. A value of zero
would mean that the returns had no linear relationship, that is, they were uncorrelated
statistically.
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Month Closing Price X Closing Price Y
Dec-00 40 20
Jan-01 44 22
Feb-01 50.6 24.64
Mar-01 51.62 25.38
Apr-01 54.7 23
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Month Closing Price X Return X Closing Price Y Return Y
Dec-00 40 20
Jan-01 44 .10 22 .10
Feb-01 50.60 .15 24.64 .12
Mar-01 51.62 .02 25.38 .03
Apr-01 54.7 .06 23 -.09
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Return X Return Y
.10 0.10
.15 0.12
.02 0.03
.06 -0.09
0.33 0.16
A.M x = 0.33/4
A.M x = 0.0825
A.M y =. 016/4
A.M y = 0.04
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Return X Average
Return
Dx Return Y Average
Return
Dy dx.dy
.10 0.0825 0.01750 0.10 .04 0.06 0.00105
.15 0.0825 0.0675 0.12 .04 0.08 0.0054
.02 0.0825 -0.0625 0.03 .04 -0.01 0.000625
.06 0.0825 -0.0225 -0.09 .04 -0.13 0.002925
0.33 0.16 0.01
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Covariance = sum of dx*dy /n
= =.01 /4
= .0025
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Return X Return Y dx dy dx2 dy2
.10 0.10 0.01750 0.06 0.000306 0.0036
.15 0.12 0.0675 0.08 0.004556 0.0064
.02 0.03 -0.0625 -0.01 0.003906 0.0001
.06 -0.09 -0.0225 -0.13 0.000506 0.0169
0.33 0.16 0.009275 0.027
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Variance X =. 0.009275 / 4
= 0.00231875
SDx = 0.00231875
SDx = 0.048153
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Variance Y =. 027 / 4
= 0.00675
SDy = 0.00675
SDy = 0.082158
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S.D x =
0.048153
0.082158S.Dy =
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0.0025r =
0.048153 * 0.082158
r = 0.631919
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Average Return
Coca Cola = 17.61/12
= 1.47
Home Depot = -21.75/12
=1.81
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DATE
COCA-COLA
(Ri)
HOME
DEPOT (Rj) Deviation (i)
Deviation
(j)
Deviation
(i)*Deviation
(j)Jan-01 -4.82 5.50 -3.01 4.03 -12.13
Feb-01 -8.57 -11.83 -6.76 -13.29 89.81
Mar-01 -14.50 1.51 -12.69 0.04 -0.49
Apr-01 2.28 9.28 4.09 7.81 31.98
May-01 2.62 4.65 4.43 3.18 14.11Jun-01 -4.68 -4.08 -2.87 -5.54 15.92
Jul-01 -0.89 6.63 0.92 5.16 4.76
Aug-01 9.13 -8.70 10.94 -10.16 -111.16
Sep-01 -3.37 -16.50 -1.56 -17.96 27.97
Oct-01 2.20 -0.36 4.01 -1.83 -7.35Nov-01 -1.55 22.16 0.27 20.69 5.52
Dec-01 0.40 9.35 2.22 7.88 17.47
AR(i)= -1.81 AR(j)= 1.47 76.42
Covij= 76.42/12 = 6.37
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COCA-COLA
DATE Deviation Sq. Deviation
Jan-01 -3.01 9.05
Feb-01 -6.76 45.65
Mar-01 -12.69 161.01
Apr-01 4.09 16.75
May-01 4.43 19.64
Jun-01 -2.87 8.24
Jul-01 0.92 0.85
Aug-01 10.94 119.64
Sep-01 -1.56 2.42
Oct-01 4.01 16.09
Nov-01 0.27 0.07Dec-01 2.22 4.92
Sum = 404.34
Variance = 404.34/12 = 33.69
Standard Deviation = sqrt(33.69) =5.80
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Expected Return and Standard Deviation of Two stocks is given below
E(R1) = 0.201 = 0.10
E(R2) = 0.20
2 = 0.10
Both the assets have equal weight i.e. (W1 = 0.50; W2 = 0.50).
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Correlation co-efficient between Stock 1 and 2 is as follows:
a. r1,2 = 1
b. r1,2 = 0.50
C. r1,2 = 0.00
d. r1,2 = -0.50
e. r1,2 = -1Calculate Portfolio Risk under all the five conditions
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Both the assets have equal weight i.e. (W1 = 0.50; W2 = 0.50).
.
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You are considering two assets with the following characteristics:
E(R1) = .15
E(R2) = .20
1 = .10 W1 = .52 = .20 W2 = .5
Compute the mean and standard deviation of two portfolios if r1,2 = 0.40 and0.60,
respectively.
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Given:E(R1) 0 .10
E(R2) 0 .15
1 = .03
2 = .05
Calculate the expected returns and expected standard deviations of a two-stock
portfolio in which Stock 1 has a weight of 60 percent under the following conditions:
a. r1,2 = 1.00b. r1,2 = 0.75
c. r1,2 = 0.25
d. r1,2 = 0.00
e. r1,2 =0.25
f. r1,2 =0.75
g. r1,2 =1.00
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The standard deviation of Shamrock Corp. stock is 19 percent. The standarddeviation of Baron Co. stock is 14 percent. The covariance between these two
stocks is 100. What is the correlation between Shamrock and Baron stock?
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