The price of Chive Corp. Stock will be either $67 or $91 at the end of the year. Call option are available with one year to expiration-bills currently yield 4 percent. b) Suppose the current price of the company stock is a $75. what is the value of the call option if the exercise price is $82 per share?
u = Su / S0 = 91 / 75 = 1.2133 ; d = Sd / S0 = 67 / 75 = 0.8933
Risk neutral probability of up move, p = (ert - d) / (u - d) where r = risk free rate = 4% and t = 1 year
Hence, p = (e0.04 x 1 - 0.8933) / (1.2133 - 0.8933) = 0.4609
Cu = max (Su - K, 0) = max (91 - 82, 0) = 9
Cd = max (Sd - K, 0) = max (67 - 82, 0) = 0
Hence, value of the call option today = [p x Cu + (1 - p) x Cd] x e-rt = [0.4609 x 9 + (1 - 0.4609) x 0] x e-0.04 x1 = $ 3.9852
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