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engineering
derivatives principles and practice
Questions and Answers of
Derivatives Principles And Practice
In the Geske-Delianedis model, there are two tranches of debt, short term and long term, hence allowing for short-term and long-term risk-neutral probabilities of default. If short-term debt has a
If short-term debt has a maturity of one year, the probability of default is p1 = 2%, long-term debt has a maturity of five years, and the cumulative probability of default is p2 = 10%, what is the
In order to stay within the Merton model framework, one way to accommodate firms with multiple debt issues in their capital structures is to collapse all debt into zerocoupon form at some
Write down the cumulative risk-neutral probability of default up to time T in the Merton model.
If default intensity λ = 3, what is the probability of two or more defaults in a quarter of a year?
If λ = 2, what is the probability of survival for three years?
Suppose that the default intensity of a firm varies over time t and is given by the following function: What is the probability of the firm defaulting in two years? = 0.5 0.017
State a few important differences between reduced-form models and structural models of default risk.
Assume continuous compounding. Suppose the firm has a constant default intensity λ = 2. The risk-free rate of interest is r = 0.02. The recovery rate is φ = 0.5, and all recovery of a defaulted
You are given that the intensity of default is λ = 0.5, and recovery rate is φ = 0.5. The risk-free rate of interest is r = 0.01. In contrast to the previous question, the recovery amount is
The intensity of default is constant, λ = 0.5. What is the conditional probability of default at time t?
You are given that the cumulative probability of default for one year is 6% and for two years is 10%. The intensity is given by the following function of time What are the values of a, b? a bt 19 +
We examine the pricing of a semiannual pay, one-year credit default swap (CDS). The premium payments are made at the beginning of each semiannual period, and default payments are made at the end of
Given that λ = 0.2, the risk-free rate r = 0, and the recovery rate φ = 0.5, price a CDS contract with maturity for two years, with semiannual premium payments made at the start of each period.
Assume there are three debt ratings: A, B, and D, where D stands for default. The one-period risk-neutral transition probability matrix for ratings is given as: What is the probability of default of
The default intensity is given as λ = 0.1 per period. The recovery rate is φ = 0.5. The risk-free rate of interest isr = 0.10 per period. Compute the price of a zero coupon bond with a maturity of
The risk-free rate of interest is constant and is 10%. The credit spread for an issuer is also constant and is 2%. If the recovery rate is 50%, all componding and discounting is continuous, and
The risk-free rate of interest is constant and is 10%. The credit spread for an issuer is also constant and is 3%. If the recovery rate is 40%, then given continuous compounding, (a) What is the
This question requires you to implement the Das-Sundaram (DS) model presented in the chapter. The notation is the same as that used in the chapter. You are given the following table of forward rates
What makes an exotic option path-dependent? Think of an example of such an option that is not covered in this chapter. Explain why you consider it path-dependent.
If an option is path-dependent, do we need to use a nonrecombining binomial tree for pricing it? That is, do we need to evaluate the option payoff along each path of stock prices separately rather
Are American options path-dependent? Why or why not?
Why are Asian options popular? State some uses of Asian options.
Is an Asian option cheaper or more expensive than a plain vanilla option? Why? Is this always true?
Explain the difference between an Asian average-price option and an Asian averagestrike option.
Distinguish between a lookback price option and a lookback strike option.
Consider an initially at-the-money knock-out put option with the knock-out price H set above the strike K. Will the price of the put be greater, smaller, or equal to that of a vanilla put? Why?
Why does a knock-out call cost less than the corresponding vanilla call?
If you want to invest in the upside potential of a stock but are afraid of overpaying for options that favor your view, suggest two ways in which you may buy a single barrier option that implements
You are the holder of an up-and-out put option. Now you want to replace it with a plain vanilla put at the same strike and maturity. What option should you purchase to achieve this?
Which has greater value, an arithmetic-average-price Asian option or a geometricaverage-price one?
What is the sign of the delta of an up-and-out call option? Explain how the delta depends on the closeness of the current stock price to the barrier.
Consider a two-period binomial tree with the following parameters: S = 100, u = 1.10, d = 0.90, and R = 1.03. Find the prices of: (a) A knock-out call option with a strike of 95 and a barrier of
Using a three-period binomial tree, value a down-and-out call option. The parameters you are given are the following: the initial stock price is $100, the strike price is $105, the barrier is $90,
In the above question, what would we do to the model to make it default to a vanilla call option? Would the vanilla call be worth more or less than the barrier option?Data in above question,Using a
A reverse cliquet with quarterly resets pays an annual coupon of 15% less the return during any quarter in which the return is negative. The index is at 1000 at the beginning of the year and takes
The current stock price is $100. Price a half-year average strike Asian call option if the stock volatility is 30%, and the annual risk-free rate is 10%. Use a tree model with six monthly steps.
What is Value-at-Risk (VaR)? What is the minimal information you need to compute VaR? What are its advantages and its limitations?
How is Value-at-Risk (VaR) different as a measure of risk than the variance of return?
What, if any, is the relationship of variance and VaR?
Which moments of the return distribution are measures of risk? State some of them, and explain what the nature of the risk measure is, and what insight one might be aiming for with your chosen
If the mean, variance, and skewness remain the same, but the kurtosis of returns on a portfolio increases, will the VaR increase or decrease, keeping all else the same?
If the mean and variance remain the same but the skewness of returns on a portfolio becomes more negative than before, what do you think will happen to the VaR of the portfolio?
What is the relationship of the trading horizon used for calculating VaR and the level of VaR? What do you think is an optimal horizon for VaR calculations?
Is it feasible to compute the risk contribution of individual assets to the total risk of a portfolio under the VaR measure if the distribution of returns is not normal and the delta-normal approach
VaR has been criticized for not being a “coherent” risk measure. Why is this?
Suppose the average profit of FOF Inc. is $1 million per week. The standard deviation of profits per week is $1 million as well. Calculate the 99% and 90% VaR for FOF. Assume profits are normally
In the preceding problem, suppose the distribution of returns is not normal but Student’s t with 5 degrees of freedom. What is the 99% VaR under the new assumption? What happens to the VaR when the
Consider a portfolio that has equal amounts of $10 invested in two assets. Suppose returns on the two assets are jointly normally distributed. The annual expected returns and variance of returns on
You are given a portfolio of three assets with mean vector and covariance matrix of returns as follows: Compute the 95% VaR for a portfolio that is invested in $1 in each asset using the
You are managing a portfolio that tracks the S&P 500 index. You consider two ways in which you might calculate the VaR: (a) Using the delta-normal approach by calibrating the mean and variance of
You are given a portfolio of three assets whose returns are jointly normally distributed with the following mean vector and covariance matrix: (a) Compute the 95% VaR for the portfolio if we invest
Examine the following plots of bivariate return distributions closely. Pay special attention to the values on the axes. Both plots are joint distributions of returns of stocks. The first Plot is
You are given a portfolio of two assets whose returns are jointly normally distributed with the following mean vector and covariance matrix: (a) Compute the 95% VaR of the portfolio if $1 is
The following asset-pricing factor returns are downloaded from the FamaFrench database: the excess market return, the SMB portfolio return, the HML portfolio return, and the risk-free return. From
This question talks about adjustments you may need to make in the computation of VaR. (a) In a historical simulation algorithm for VaR, suppose the portfolio’s historical mean return is
Define and quantify the following terms related to convertible bonds: (a) Conversion ratio, (b) Callability, (c) Fair premium, (d) Parity, (e) Breakeven,
You are given the following input information: (a) What is the parity value per bond? (b) What is the premium over parity per bond? (c) Express the same results on a per-share basis.
What are the different types of embedded options within a convertible bond? Explain whether they benefit the investor or the issuer.
What incentive issue has been commonly resolved by the issuance of a convertible bond by the management of a firm?
The face value of a convertible bond is $100, and the issue price is $150, with a conversion ratio of 5. The market price of the equity shares is $25. Compute the.(a) Conversion price, (b)
XYZ Co. has issued convertibles with face value $100, and the issue price is $100. The market price per share is $20 and the conversion ratio is 4. The bond pays a coupon of 5%, and the dividend rate
Assume the current stock price is $100. Next period it can take a value of either 120 or 80. If the return on $1 invested today for one period is 3%, then how much will a zero-coupon convertible bond
Assume the current stock price is $100. Next period it can take a value of either 130 or 90. If the return on $1 invested today for one period is 5%, then how much will a 6% coupon convertible bond
Assume the current stock price is $100. Next period it can take a value of either 1.2 or 0.8 times the stock price. If the return on $1 invested today for one period is 2%, then how much will a
Using a semiannual CRR binomial tree, price a convertible bond with a face value of $100, conversion ratio of 1, and a coupon rate of 10%. The maturity of the bond is three years. Assume that the
In the preceding question, assume that the convertible bond is also callable at a price of $110 (cum-coupon). Rework the price of the convertible bond. Explain your answer.Data in preceding
Using the program you wrote for the callable-convertible bond, modify it to compute the delta of the bond for a range of stock prices from 80 to 120. Let the coupon rate be 10%, the risk free rate be
(Advanced Question; Goes beyond Text) Think of five trading strategies that you may wish to implement using convertible bonds. For each of these ideas, what risks would you need to eliminate from the
The current equity price of firm XYZ is $10. The equity trades at a volatility of 20%. The firm issues a five-year convertible bond at a face value of $100 and a coupon of 6%. This bond may be
A convertible bond is sensitive to both stock price movements and interest-rate changes. Which of the following scenarios is likely to result in the greatest price increase of a convertible? (a)
Which of the following scenarios is most likely to result in the greatest increase in the price of a convertible bond? (a) Stock volatility increases; interest-rate volatility increases. (b) Stock
What is the expected impact of an increase in maturity on convertible bond values, holding all other conditions the same?
Why does traditional NPV analysis break down in the presence of real options within an investment opportunity?
State three different forms of real options and discuss possible real-world cases in which such options are likely to be manifest.
You have the option to invest in a project at any time in the future. If the riskiness of the project increases, does it increase or decrease the average waiting time to making the investment?
The option to wait to invest in a risky project is a valuable one. The risk of waiting to invest is a possible loss in market share to other early movers into the market. How would you use the option
What does the option of waiting to invest do to the following features of the project versus making a project choice based on NPV alone? (a) Riskiness of the project, (b) Effective hurdle rate for
Shining Metal Inc. has invested in a gold mine. The company needs to decide whether to drill for gold at the beginning of the year or wait until next year. Gold drilled this year will be sold at
In a gold mine, the price of gold is a major determinant of the value of the project. (a) When the price of gold drops, what real option in the mine may be exercised? (b) When the price of gold
In real options analysis, what discount rate should be used in the model for valuing the option?
You invest in an oil exploration project with a public company. What are the two main risks you face? How do you hedge these risks?
Based on real options analysis, would you expect to see more or less oil exploration as oil price volatility increases?
The current price of silver is $7 per ounce. You are a maker of silver jewelry and wish to obtain a guaranteed supply of silver at the end of the year at a maximum price of $8 per ounce. If the
You are the purchasing manager of a major health-care provider. A certain generic drug is selling at a price of $10 per unit. To ensure that costs for this drug do not exceed $12 per unit the
How does the option of waiting to invest impact project values? When is it worth the wait? What is the implicit effect of the option of waiting to invest on the project’s hurdle rate?
How is the option of waiting to invest different from the option to abandon the project? What exotic options are these optionalities analogous to?
Contrast the state-space approach to valuing real options with the traditional discounted cash-flow approach. Highlight three advantages of the state-space approach over the DCF one. What are the
In this problem, you will download market data and generate a state space for valuation purposes. Please carry out the following set of steps: (a) Download five years of monthly stock price data
You have current wealth of $100. You are offered a venture in which you may with equal probability double your money or halve it. If your utility is the square root of your wealth, would you take
You have developed a new material called gossamer, which has demand characteristics closely related to the markets for gold and silver. The prices of these commodities at the end of the year are
Explain why a swap is a collection of forward rate agreements (FRAs).
Show that a swap in which one receives fixed and pays floating is equivalent to a portfolio of caps and floors. Present the specific relationship.
What is the relationship of a swap to fixed- and floating-rate bonds?
What is the duration of a floating-rate note (FRN)?
You hold a Libor FRN with a coupon rate that is capped at 10%. Explain whether the price is increasing or decreasing as a function of Libor.
A swaption is an option on a swap. A cap is a portfolio of options on FRAs. Given that swaps are portfolios of FRAs, what has greater value, (a) A swaption(b) A cap?
What is the impact on the value of a swap if, ceteris paribus, the volatility of interest rates rises?
The six-month Libor rate is given to be 3% and the twelve-month rate to be 4%. The 6 × 12 FRA is trading at 4.2%. Show how you would construct a sure arbitrage to take advantage of these market
Consider a long position in a 6 × 12 FRA contract at a fixed rate of 4.2% Compute the payoff to this contract for a range of interest rates from 1% to 10%. Is the slope of this payoff function
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