Problem 1: The present prices of a riskless asset, a stock, and an option, are provided...
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Problem 1: The present prices of a riskless asset, a stock, and an option, are provided in the first row of the table below. The next two rows contain the prices of these assets in the next week, in two scenarios. All prices are already discounted to the present-day dollars; that is why the riskless asset has prices 1. Present Scenario 1 Scenario 2 Cash Stock 1 6 1 7 1 4.5 Option 1 0.6 1 0 (a) Write a linear programming problem to check whether arbitrage is possible. (b) Formulate the dual problem and find non-arbitrage probabilities of scenarios. Did we need the option data to establish these probabilities? (c) Suppose "Option 2" has value 0 in Scenario 1 and value 2 in Scenario 2. What should be its present price to make arbitrage impossible? Problem 2: Consider the data on return rates of three stocks in three scenarios: Stock 1 Stock 2 Stock 3 Scenario 1 0.041 -0.05 0.028 Scenario 2 -0.015 0.062 -0.022 Scenario 3 -0.012 -0.037 0.014 The problem is to construct a portfolio of the three stocks (and no cash), for which the mean square error between the return rate of the portfolio and the return rate of a benchmark is minimized. The return rate of the benchmark is 0.01 in Scenario 1, 0 in Scenario 2, and 0.01 in Scenario 3. Short-selling is allowed. (a) Formulate the corresponding optimization problem. (b) Write the optimality conditions. (c) Solve the problem in Excel, and find the value of the Lagrange multiplier in the optimality conditions. Problem 1: The present prices of a riskless asset, a stock, and an option, are provided in the first row of the table below. The next two rows contain the prices of these assets in the next week, in two scenarios. All prices are already discounted to the present-day dollars; that is why the riskless asset has prices 1. Present Scenario 1 Scenario 2 Cash Stock 1 6 1 7 1 4.5 Option 1 0.6 1 0 (a) Write a linear programming problem to check whether arbitrage is possible. (b) Formulate the dual problem and find non-arbitrage probabilities of scenarios. Did we need the option data to establish these probabilities? (c) Suppose "Option 2" has value 0 in Scenario 1 and value 2 in Scenario 2. What should be its present price to make arbitrage impossible? Problem 2: Consider the data on return rates of three stocks in three scenarios: Stock 1 Stock 2 Stock 3 Scenario 1 0.041 -0.05 0.028 Scenario 2 -0.015 0.062 -0.022 Scenario 3 -0.012 -0.037 0.014 The problem is to construct a portfolio of the three stocks (and no cash), for which the mean square error between the return rate of the portfolio and the return rate of a benchmark is minimized. The return rate of the benchmark is 0.01 in Scenario 1, 0 in Scenario 2, and 0.01 in Scenario 3. Short-selling is allowed. (a) Formulate the corresponding optimization problem. (b) Write the optimality conditions. (c) Solve the problem in Excel, and find the value of the Lagrange multiplier in the optimality conditions.
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Problem 1 a To check whether arbitrage is possible we can formulate a linear programming problem Lets define the decision variables as follows x Amoun... View the full answer
Related Book For
Data Modeling and Database Design
ISBN: 978-1285085258
2nd edition
Authors: Narayan S. Umanath, Richard W. Scammel
Posted Date:
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