A stock price is currently $100. Over each of the next two 3-month periods, it will go up by 10% or down by 10%. The risk-free interest rate is 6% per annum with semiannual compounding. A (a) What is the value of a 6-month European call option with a strike price of $100? Calculate this directly using a two-period binomial tree and the delta-hedging approach.

The current stock price of MRF is ₹ 81000. A European call option on the stock with exercise price of ₹ 75000 will expire in 40days. The annual continuously compounded risk-free interest rate is 10%, standard deviation of the continuously compounded rate of return is 60% p.a. Calculate the value of the Call option. Find the value of the Put option using Put-Call Parity Rule.

The stock price is currently $30. Each month for the next two months it is expected to increase by 8% or reduce by 10%. The risk-free interest rate is 5%. Use a two-step tree to calculate the value of a derivative that pays off [max(30 — St； 0)]2, where St is the stock price in two months? If the derivative is American-style, should it be exercised early?

You Consider a stock with a price of $50 that is expected to increase by 6% or decrease by 8% each month over the next two months. Having a risk-free rate at 3% per year with continuous compounding, calculate the value of a two-month European put option with a strike price of $55. Repeat your calculations for a two-month American put option with a strike price of $55. Show clearly all your calculations and results with the use of the relevant equations and graphs. Discuss your investment decision in each case separately.