Suppose that a U.S. Treasury note maturing February10, 2009 is purchased with a settlement date of July 31, 2007. The coupon rate is 3% and the maturity value of the position is $1,000. The next coupon date is August 15, 2007. What is the full (dirty) price of this bond given the required yield is 4.0%? (Note that there 181 days in the coupon period and there are 15 days between the settlement date and the next coupon date.)
1000.72
992.72
$989.81
$971.99
Period | Discounting Factor [1/(1.02^period)] |
Discounting Factor Annuity (Sum of discounting factor & all previous discounting factors) |
1 | 0.980392157 | 0.980392157 |
2 | 0.961168781 | 1.941560938 |
3 | 0.942322335 | 2.883883273 |
4 | 0.923845426 | 3.807728699 |
Flat Price or Clean Price (i.e. Price as on February 10, 2007) = PV of All Coupons + PV of Maturity Value = [Coupon*Annuity Factor] + [Maturity Value*Discounting Factor] = [1000*1.5%*3.8077] + [1000*0.9238] = 57.1155 + 923.8 = $980.9155
Invoice Price or Dirty Price = Flat Price + Accrued Interest till Purchase Date = 980.9155 + [1000*1.5%*(181-15)/181] = 980.9155 + 13.7569 = $994.6724 which is equivalent to $992.72
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