In: Finance
You are about to price a call option that has a strike price of $30 and has a maturity of 9-months. You know the current risk-free rate for all periods up to a year is 4.95% with continuous compounding, the current stock price is $28.75, and the stock’s volatility is 25%. Use CRR approach for u & d when needed.
What is the value of this European put option using a 4-step binomial tree?
Up Move (u) = eVolatility * Square Root of dT
Down Move (d) = 1 / Up Move
Probability of Up Move = [(er*dT) - d] / (u-d)
Probability of Down Move = 1 - Probability of Up Move
Calculation of Value of Call Option
Value of Call Option at Expiry = Maximum of either (Underlying Price - Strike Price) or 0
Value of Call Option at 0 = $3.29
Calculation of Put Option
Value of Put Option at Expiry = Maximum of either (Strike Price -
Underlying Price at T) or 0
Value of Put Option = $3.08