In: Finance
A stock price is $100 now. In one month it can go 10% up or down. In the second month it can go 10% up or down. The annual interest rate is 10% with continuous compounding. Use risk-‐free portfolios to determine the value of: (do not use probabilities) a) A two-‐month European call with strike price 100 b) A two-‐month European call with strike price 104
value of call option , s1 = value when price after 2 month goes up by 10% ,
hence , s1 = current stock price*(1+10%) = current stock price*(1+0.10)
similarly , s2 = stock price after 2 month if price goes down = current stock price*(1-10%) = current stock price*(1-0.10)
using these and the given values we calculate the hedge ratio and then the value of option.