As per The Economist (June 24, 2017), the Argentinian
government issued its first 100‐year bond, with cash flows
denominated in dollars. The bond thus now matures in,
for simplification purposes, 97 years. The current bond has a
$1,000 face value and the following monthly, end‐ofmonth
coupon payments: $10/ month for 47 years, $30/month for 20 years,
and then $50/month for 30 years. As
Argentina has defaulted on its bonds six times in the past 100
years, you decide that a 18%/year required return is an
appropriate (geometric) average required return over the entire
horizon. Thus, use a required return of 18%/year
and answer the following questions.
You might recognize that this bond’s series of cash flows consists
of three annuities and a single face‐value cash flow
at maturity. I will refer to the annuities, in chronological order,
as Annuity A, Annuity B, and Annuity C. Importantly, I
do not want you to do any calculations here. Rather, I am asking
questions about the right approach to ultimately
valuing this annuity.
(a1) The equations for present value of an ordinary annuity are [in
math] C / r ∙ ( 1 – 1/(1+r)N ) and [in Excel] –PV(rate,
nper,pmt,,0). State the values that you would use for C (pmt), r
(rate), and N (nper) for Annuity A. (a2) State the values
that you would use in the present‐value equation for C (pmt), r
(rate), and N (nper) for Annuity B. You do not
need to calculate this present value; just call the answer X (or ⌂
or !!! or gazillion). (a3) State the values that you
would use in the present‐value equation for C (pmt), r (rate), and
N (nper) for Annuity C. You do not need to calculate
this present value; just call the answer Z (or ⌂ or !!! or
gazillion). (b1) Write the simple math equation for
transforming
X (from part a2) into a value today. (b2) Write the simple math
equation for transforming Z (from part a3)
into a value today. (b3) Write the simple math equation for
transforming the $1,000 face‐value payment into a value
today. [Suggestion: A timeline might be very helpful as you
organize your work.]
Annuity A:
N= 47
rate(r) =18%
pmt= 10
FV = 0
calculate for PV, it will be 55.5323
Annuity B
N= 20
rate(r) =18%
pmt= 30
FV = 0
calculate for PV, it will be 160.5824
But as we are discounting it to only 20 years it will be at 47th year.
Hence to get the present value we need to discount it by 1.18^47.
final PV = 160.5824/1.18^47= 0.0667
Annuity C
N= 30
rate(r) =18%
pmt= 50
FV = 1000
calculate for PV, it will be 282.8152
But as we are discounting it to only 30 years it will be at the 67th year.
Hence to get the present value we need to discount it by 1.18^67.
final PV = 282.8152/1.18^67= 0.00431
PV of the bond = 55.5323 + 0.0667 + 0.00431 =55.60381
Additionally, I have attached one timeline so that students can check why annuity b and c were discounted by respective years.
Additionally, I have added excel calculation below for more clarity:
0 | pv | ||
1 | 10 | 8.474576 =(10/1.18^1) | |
2 | 10 | 7.181844 = (10/1.18^2) | |
3 | 10 | 6.086309 | |
4 | 10 | 5.157889 | |
5 | 10 | 4.371092 | |
6 | 10 | 3.704315 | |
7 | 10 | 3.13925 | |
8 | 10 | 2.660382 | |
9 | 10 | 2.254561 | |
10 | 10 | 1.910645 | |
11 | 10 | 1.61919 | |
12 | 10 | 1.372195 | |
13 | 10 | 1.162877 | |
14 | 10 | 0.985489 | |
15 | 10 | 0.83516 | |
16 | 10 | 0.707763 | |
17 | 10 | 0.599799 | |
18 | 10 | 0.508304 | |
19 | 10 | 0.430766 | |
20 | 10 | 0.365056 | |
21 | 10 | 0.30937 | |
22 | 10 | 0.262178 | |
23 | 10 | 0.222185 | |
24 | 10 | 0.188292 | |
25 | 10 | 0.159569 | |
26 | 10 | 0.135228 | |
27 | 10 | 0.1146 | |
28 | 10 | 0.097119 | |
29 | 10 | 0.082304 | |
30 | 10 | 0.069749 | |
31 | 10 | 0.05911 | |
32 | 10 | 0.050093 | |
33 | 10 | 0.042452 | |
34 | 10 | 0.035976 | |
35 | 10 | 0.030488 | |
36 | 10 | 0.025837 | |
37 | 10 | 0.021896 | |
38 | 10 | 0.018556 | |
39 | 10 | 0.015725 | |
40 | 10 | 0.013327 | |
41 | 10 | 0.011294 | |
42 | 10 | 0.009571 | |
43 | 10 | 0.008111 | |
44 | 10 | 0.006874 | |
45 | 10 | 0.005825 | |
46 | 10 | 0.004937 | |
47 | 10 | 0.004184 | |
48 | 30 | 0.010636 | |
49 | 30 | 0.009014 | |
50 | 30 | 0.007639 | |
51 | 30 | 0.006473 | |
52 | 30 | 0.005486 | |
53 | 30 | 0.004649 | |
54 | 30 | 0.00394 | |
55 | 30 | 0.003339 | |
56 | 30 | 0.00283 | |
57 | 30 | 0.002398 | |
58 | 30 | 0.002032 | |
59 | 30 | 0.001722 | |
60 | 30 | 0.001459 | |
61 | 30 | 0.001237 | |
62 | 30 | 0.001048 | |
63 | 30 | 0.000888 | |
64 | 30 | 0.000753 | |
65 | 30 | 0.000638 | |
66 | 30 | 0.000541 | |
67 | 30 | 0.000458 | |
68 | 50 | 0.000647 | |
69 | 50 | 0.000548 | |
70 | 50 | 0.000465 | |
71 | 50 | 0.000394 | |
72 | 50 | 0.000334 | |
73 | 50 | 0.000283 | |
74 | 50 | 0.00024 | |
75 | 50 | 0.000203 | |
76 | 50 | 0.000172 | |
77 | 50 | 0.000146 | |
78 | 50 | 0.000124 | |
79 | 50 | 0.000105 | |
80 | 50 | 8.88E-05 | |
81 | 50 | 7.53E-05 | |
82 | 50 | 6.38E-05 | |
83 | 50 | 5.4E-05 | |
84 | 50 | 4.58E-05 | |
85 | 50 | 3.88E-05 | |
86 | 50 | 3.29E-05 | |
87 | 50 | 2.79E-05 | |
88 | 50 | 2.36E-05 | |
89 | 50 | 2E-05 | |
90 | 50 | 1.7E-05 | |
91 | 50 | 1.44E-05 | |
92 | 50 | 1.22E-05 | |
93 | 50 | 1.03E-05 | |
94 | 50 | 8.75E-06 | |
95 | 50 | 7.42E-06 | |
96 | 50 | 6.28E-06 | |
97 | 1050 | 0.000112 | |
55.60381 | PV of BOND |
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