Question

In: Finance

6. Stock price simulation: A stock’s price is lognormally distributed with mean μ = 15%. The...

6. Stock price simulation: A stock’s price is lognormally distributed with mean μ = 15%. The current stock price is S0 = 35. Following the template on the spreadsheet, create 60 static standard normal deviates using Data|Data Analysis|Random Number Generation. Use these random numbers to simulate the stock price path over 60 months. Create price paths for σ = 15%, 30%, and 60% and graph these three paths on the same axes.

Solutions

Expert Solution

So = 35

S1 (stock price at t = 1 month) = So * exp(m*t + s*(t^0.5)*normsinv((rand))

where m mean return = 15%

s: standard deviation = 15%/30%/60%

normsinv(rand) is the function of excel to generate random number with mean = 0 & st dev = 1

t is time step = 1month = (1/12) year =  0.0833 year

So 35
mean 15%
st dev 15% 30% 60%
t 0.083333333
Time Stock price
St dev 15% St dev 30% St dev 60%
0 35 35 35
1 34.05871315 38.235964 25.114935
2 33.12472905 33.2556 26.182407
3 31.70016938 35.499846 29.587652
4 32.48240613 39.680284 33.73532
5 31.85401552 42.227174 39.631523
6 31.73831071 42.011274 31.685845
7 31.76151016 40.118972 28.957209
8 33.25013908 37.99756 39.521421
9 34.36656679 39.804365 41.009884
10 32.52716959 39.120481 39.505082
11 31.74623971 42.367612 42.059135
12 29.41892653 49.273718 44.086278
13 30.4144073 47.509566 59.921701
14 30.50269625 44.822616 49.245574
15 32.92601963 41.970747 64.711836
16 34.32203046 43.200686 56.882936
17 32.64634491 49.572277 66.496539
18 29.95534159 45.244158 44.302638
19 30.82355398 48.005018 58.528636
20 30.91379833 49.148773 57.048767
21 29.51843266 44.603775 63.819395
22 28.08424133 41.78027 69.632984
23 28.63646711 38.673414 79.854193
24 28.55438899 38.076871 72.182536
25 26.96757013 35.293359 75.147966
26 29.62092457 35.028011 74.057808
27 29.07722651 34.854926 60.493612
28 30.82047787 38.330172 66.991345
29 33.96572629 41.852521 77.652873
30 34.22596317 43.821564 93.811274
31 34.55680557 48.31805 98.233101
32 35.08827239 55.054239 97.218152
33 34.69492721 70.07988 89.349185
34 33.83736747 70.127023 84.242177
35 34.0686382 88.018638 101.18712
36 34.45633748 79.982748 109.03706
37 36.41739095 89.922925 77.546074
38 36.09818458 82.446882 104.57024
39 34.72308499 94.455608 102.79117
40 36.57246273 93.590664 94.574887
41 38.96880155 88.742372 108.10375
42 38.63051185 89.318953 160.86283
43 34.53948587 91.495112 166.5158
44 36.16013688 93.283284 152.25234
45 35.70822842 94.241807 157.32944
46 38.2630797 99.079416 209.25571
47 38.02713047 109.77444 215.03793
48 35.1322744 110.3505 232.46741
49 35.91633065 116.14431 145.21724
50 37.15539495 107.04139 149.31158
51 36.28210946 120.62454 144.3996
52 33.6852591 120.01039 139.11702
53 34.86310436 122.72142 149.70213
54 36.11235101 129.64918 135.40792
55 35.16913502 148.3704 111.96552
56 37.62799605 141.92656 101.23847
57 38.14273595 148.17864 110.66695
58 37.58311739 174.08932 174.4183
59 37.7673879 173.4685 124.48869
60 37.52643223 164.42029 149.11894

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