Verify that put–call parity holds
Call-put parity equation can be used in following manner
C + K* e^ (-r*t) = P + S0
Where,
C = Call premium =$4.12
K = exercise price of the call/put option =$22.5
P = Put premium =$7.42
S0 = Current price of underlying stock =$19.32
e^ (-r*t) = the present value of the exercise price discounted from the expiration date at risk-free rate
And r =Risk-free interest rate per year = 4.15% and t= time period =0.5 years (6 months)
Therefore,
$4.12 + $22.5 *e^ (-4.15%*0.5) = $7.42 + $19.32
$4.12 + $22.04 = $7.42 + $19.32
$26.16 ≠ $26.74
As the value of both sides of equation is not same therefore the put–call parity does not hold and there is an arbitrage opportunity
We can see that left side of equation is under-priced therefore it should be brought and right side of equation is over-priced therefore it should be sold.
This arbitrage opportunity involves buying a call option and selling a put option and a share of the company.
-$4.12 + $7.42 +$19.32 = + $22.62
After six months, if share price is more than the strike price, call option will be exercised and if it is below the strike price then put option will be exercised
Therefore, Net profit = + $22.62 - $22.50 = + $0.12
PROBLEM 2. 14 pointsl European call and put options with exercise price $22.5 and expiration time...
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