Essentials of Investments- Bodie, Kane and Marcus.
1. A bond that sells for $ 957 at three years make annual payments of coupons at 8%. The interest rate for the next three years is estimated at: 8%, 10% and 12%, respectively. Calculate:
a) The YIELD TO MATURITY of the bond
b) The effective return at the end of the period (remember that it
is compound interest)
Interest rate = 8%
Next year = 10% & 12%
Face value = $1000
Coupon
!st year = $1000 * 8% = 80
next year = $1000 * 10% = $100
Next year = $1000 * 12% = $120
Average interest = (80 +100+ 120)/ 3 = $100
Yield to maturity = Interest + (F.V. - S.V.)/n / [ (F.V. + S.V.)/2]
= 120 + ( 1000 -957)/3 / [(1000+ 957)/2]
= (120 + 14.33) / 978.50
= 13.73 %
b)In case compounded anually
Effective return = [1 + (i/n)]n - 1
= ( 1 + (0.1373/3)]3 - 1
= 14.37 %
If compounded continuously
r = er -1
= 2.7182813.73 - 1
= 1.1471721 - 1
= 14.72 %
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