Consider a European call optio

Consider a European call option on a non-dividend-paying stock; when the option is written, the stock price is S0, the volatility of the stock price is s, the strike price is K, the continuously compounded risk-free rate is r, and the term to expiration is T; let c be the price of the option. The Black-Scholes formula for the option price is

C. c=S0N(d1)KerTN(d2)

where N(x) is the cumulative probability distribution function for a standardized normal distribution and d1 and d2 are parameters dependant on the structure of the option, the level of interest rates, and the volatility of the stock price.

13. (a) Using the terminology of the last question (re-printed above – Question 8 from the multiple choice section), specify the Black-Scholes formula for the price of a European put option on a non-dividend-paying stock

Formula for value of put option is

P = -S0N (-d1) + ke^(-rt)N (-d2)

(b) Explicitly describe the relationship of the parameters d1 and d2 to the structure of the option, the level of interest rates and the volatility of the stock price and the relationship of the parameters to each other; use the notation of the last question (e.g., write the formulas for d1 and d2 )

(c) We found that for a dividend yielding stock that there was a simple enhancement possible to convert the result in question 3) to the case of a European call option on a dividend yielding stock. Let q represent the dividend yield and describe the enhancement (which we found appropriate in many representations). Also, show the result for the European call option on a dividend yielding stock (include the formula for d1 and d2 ).

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Consider a European call optio

Consider a European call option on a non-dividend-paying stock with a strike price of $145 and expiration in 6 months. The current stock price is $140. The stock’s volatility is 10%. Over each of the next two three-month periods, the stock price is expected to go up by 5% or down by 5%. The risk-free interest rate is 5% per annum with continuous compounding for all maturities.

(a) Use a two-step binomial tree to calculate the value of this European call option. Show your step-by-step workings.

(b) Use the Black-Scholes-Merton model to calculate the value of this European call option. Show your step-by-step workings.

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