BANK3011 Lecture Notes - Lecture 3: Cash Flow, Yield Curve, Weighted Arithmetic Mean

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It can also be applied to a portfolio: this is the level within a bank at which we really need to measure and manage risk. =(cid:2869: (cid:1830)= macaulay duration (in years) (cid:1872)= number of periods in the future (years, (cid:1829)(cid:1832)= cash flow to be delivered in (cid:1872) periods, (cid:1840)= time to maturity, (cid:1830)(cid:1832)= discount factor. For a zero-coupon bond, macaulay duration equals maturity since 100% of its present value is generated by the payment of the face value at maturity. For all other bonds with cash flows arriving earlier: duration < maturity. (cid:1872) Computing duration: consider a 2-year, 8% coupon bond, with a face value of ,000 and yield-to-maturity of 12%, present value of each cash flow equals (cid:1848)(cid:4666)(cid:1829)(cid:1832)(cid:4667) =(cid:882): coupons are paid semi-annually, so each coupon payment is 8% ,(cid:2868)(cid:2868)(cid:2868) (cid:2870, per period (6-month) yield to maturity is (cid:2869)(cid:2870) (cid:883)(cid:884)%=(cid:888)%. (cid:4666)(cid:2869)+(cid:2868). (cid:2868)6(cid:4667) where (cid:1872) is the period number, weight equals (cid:4666)(cid:4667) (cid:1849) years.

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