A put option and a call option with an exercise price of $65 and three months to expiration sells for $2.87 and $4.08, respectively. If the risk-free rate is 4.8 percent per year, compounded monthly , what should the stock sell for?
Put Call Parity Equation : C + X(1+r)t= S0 +P
C= Call Option Price=$4.08
P= Put Option Price=$2.87
X= Exercise Price =$65
T= time =3 months
r= risk free rate per month =4.8/12=0.4 i. e 0.004
S0= Spot stock selling price=?
Let us put in equation
$4.08 + $65(1+0.004)3= S0 +$2.87
$4.08 +$65(1.004)3= S0 +$2.87
$4.08 + $65 x 1.012048= S0 +$2.87
$4.08 + $ 65.78 = S0 +$2.87
S0 +$2.87= $ 69.86
S0 =$69.86-$2.87
So=$66.99
The stock selling price should be $66.99
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