8. Show that a term structure model with flat yield curves and parallel yield curve shifts...
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8. Show that a term structure model with flat yield curves and parallel yield curve shifts contains arbitrage opportunities using the following model: At time 0 the yield curve is flat at 8%. At time 0.5 there are two possible states: the yield curve is either flat at 10% or flat at 6%. This is depicted below: Time 0 Yield curve flat at 8% Time 0.5 Yield curve flat at 10% Yield curve flat at 6% a) b) Draw a tree containing the time 0 price and the two possible time 0.5 payoffs (or prices) for three different assets: a zero maturing at time 0.5, a zero maturing at time 10, and a zero maturing at time 30, $100 par value each. Consider a portfolio of 0.5- and 30-year zeros that replicates $100 par of the 10-year zero, that is, it has the same values as $100 par of the 10-year zero in both the up and down states at time 0.5. i) Determine the par amounts of the 0.5- and 30-year zeros in this replicating portfolio. ii) What is the cost of this replicating portfolio at time 0? c) Describe an arbitrage opportunity in this market and indicate the arbitrage profit. d) Suppose we change only today's yield on the 10-year zero to eliminate the arbitrage opportunity; what would the yield have to be? 8. Show that a term structure model with flat yield curves and parallel yield curve shifts contains arbitrage opportunities using the following model: At time 0 the yield curve is flat at 8%. At time 0.5 there are two possible states: the yield curve is either flat at 10% or flat at 6%. This is depicted below: Time 0 Yield curve flat at 8% Time 0.5 Yield curve flat at 10% Yield curve flat at 6% a) b) Draw a tree containing the time 0 price and the two possible time 0.5 payoffs (or prices) for three different assets: a zero maturing at time 0.5, a zero maturing at time 10, and a zero maturing at time 30, $100 par value each. Consider a portfolio of 0.5- and 30-year zeros that replicates $100 par of the 10-year zero, that is, it has the same values as $100 par of the 10-year zero in both the up and down states at time 0.5. i) Determine the par amounts of the 0.5- and 30-year zeros in this replicating portfolio. ii) What is the cost of this replicating portfolio at time 0? c) Describe an arbitrage opportunity in this market and indicate the arbitrage profit. d) Suppose we change only today's yield on the 10-year zero to eliminate the arbitrage opportunity; what would the yield have to be?
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a To draw the tree we start with the time 0 prices for the three different assets a zero maturing at time 05 a zero maturing at time 10 and a zero mat... View the full answer
Related Book For
Introduction to Operations Research
ISBN: 978-1259162985
10th edition
Authors: Frederick S. Hillier, Gerald J. Lieberman
Posted Date:
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