Homework #2
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Homework #2
Question #1 (30 points)
You short a put with maturity in 10 days with strike K1 = $3, 800. You buy a put on the same underlying asset with strike K2 = $3, 840. ST is the price of the underlying asset at maturity.
(i) What is your cash flow at time T (not accounting for any costs of purchasing the portfolio) if a) ST ≤ K1, b) K1 < ST < K2 and c) K2 ≤ ST .
(ii) Which put is more expensive? Will you make an overall profit or loss if ST ≥ K2?
(iii) Is this strategy bearish (makes money when stock prices fall) or bullish (makes money when stock prices rise)?
Question #2 (20 points)
The stock of ABC Inc. is currently trading at S0 = $150 dollars per share. Consider a portfolio of European put and call options which gives the following cash flow at expiration in 6 months as a function of stock price in 6 months:
where K1 = $100;K2 = $150;K3 = $200.
Assume that you have access to the following securities:
❼ 6 month European calls and puts with strike prices K1 and K3 ,
❼ 6 month European calls (not puts) with strike price K2 .
Identify the relevant options needed to create this portfolio. Indicate the position taken in each option. You do not have to calculate the cost of buying this portfolio.
Hint: draw the payoff diagram as a function of final stock price S6 .
Question #3 (20 points)
The current price of a share of Delta Airlines is $50 and the riskless rate of return is 5% per annum (continuous compounding). We assume that Delta Airlines does not pay dividends.
Consider a European put and a European call on a share of Delta Airlines sharing the common strike price of $52 and the common maturity of 6 months. The price of the put is $4 .00 and the price of the call is $3.75. Are there any arbitrage opportunities? If so, construct a trading strategy to take advantage of the gains possible.
Question #4 (30 points)
The price of a stock is currently $20. Over each of the next two three-month periods, the stock can go up by 10% or down by 10%. The riskfree interest rate is 12% per annum with continuous compounding.
(i) What is the current value of a six-month European put option with a strike price of $22?
(ii) What is the current value of a six-month American put option with a strike price of $22?
2024-03-09