Seven months European call and put options on palladium are trading at 9¥ and 13¥, respectively, with the same exercise price of 190¥. The spot price is 179¥ and the interest rate is 7%.
Is there any arbitrage opportunity? Justify your answer.
If yes, calculate the arbitrage profit in this case.
Answer-
The arbitrage opporunity can be calculated by Put-call Parity equation.
S + P = C + PV(X)
Where
S = Spot price = S = 179 ¥
Put Option = P = 13 ¥
Call Option = C = 9 ¥
Exercise Price or Strike Price = X = 190 ¥
PV (X ) = X / ( 1+ R)
Risk free rate = R = 7 % = 0.07
Substituting the values andequating the equations we get
S + P = 179 ¥ + 13 ¥
S + P = 192 ¥
C + [ X / (1+R) ] = 9 ¥ + [ 190 ¥ / ( 1+ 0.07) ]
C + [X / (1+R)] = 9 ¥ + (190 ¥ / 1.07)
C + [ X / (1+R) ] = 9 ¥ + 177.57 ¥
C + [ X / (1+R) ] = 186.57 ¥
Since the value of S + P = 192 ¥ is greater than the value of C + [ X / (1+R) ] = 186.57 ¥ , the arbitrage opportunity exists .
The arbitrage profot is equal to difference in above obtained value = 192 ¥ - 186.57 ¥ = 5.43 ¥
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