You gather the following information from the Wall Street Journal: Intel’s stock is selling for $13.50, the risk-free rate is 4% and a put option on Intel is selling for $4.00 matures in one year and has an exercise price of $15.
a) Calculate the equilibrium value of a call option on Intel that has an exercise price of $15 and matures in one year.
b) Assume the Call option is selling for $4.00, create a pure arbitrage.
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As per put-call parity
P+ S = present value of X + C
P= value of put option.
S= current price of the share
X= strike price
C= value of call option.
Present value of X = X/e^r
r = risk free rate.
Given:
P= value of put option = 4
S= current price of share=13.50
X= strike price = 15
Present value of X = 15/e^0.04
r = risk free rate. 4%
4+15 = (15/e^0.04)+C
C= 4.59
Value/Price of call option =$4.59
b. If the value of the call option is $4.59, then put-call parity is violated as the actual call price is $4.
And there is an arbitrage opportunity.
Arbitrage strategy:
Buy Call
Buy Risk-free Asset
Sell Put
Sell Stock
Arbitrage profit = 4.59-4 = $0.59
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