Four years later, the Insurance company undertakes a review of all its holdings and wants to know
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Question:
Four years later, the Insurance company undertakes a review of all its holdings and wants to know what the price risk is associated with its bonds. It 'stress tests' them by estimating what the effect of a 2-percentage point increase in YTM maturity would be.
- Key formula: P/P = -D*y + C (y)2
Summary: the bond now has 15 years to maturity, a coupon of $80, a par value of $1000 and is trading with at YTM of 6%. Its Macaulay Duration is 9.75 years
- A) Calculate the modified duration
- B) Using the modified duration, estimate in percentage terms how much the price would drop if the YTM rose from 6% to 8%.
- C) Convexity for the bond would be 116.8. In percentage terms, how much would convexity reduce the loss estimated in (B) if rates rose to 8%?
- D) Adding the modified duration and the convexity effects together, calculate an estimate of the dollar value of the loss that would result if rates rose to 8%, (i.e. multiply your percentage answers to (B) and (C) times the price of the bond when YTM is 6%)
- E) Calculate accurately using either a spreadsheet or the bond function keys on your calculator what the actual price change would be if the YTM rose from 6% to 8%.
- F) If interest rates rose by 2 percentage points, what is the percentage loss that the insurance company would suffer on The Bond. In other words, what percentage price loss does your answer to (E) show?
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