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The price of Tara inc. stock will be either $59 or $79 at the end of the year. Call options are available with one year to expiration. T-bills currently yield 4 percent.

a. Suppose the current price of Tara stock is $71. What is the value of the call option if the exercise price is $44 per share? (Do not round intermediate calculations. Round the final answer to 2 decimal places. Omit $ sign in your response.) Value of the call option
b. Suppose the current price of Tara stock is $71. What is the value of the call option if the exercise price is $69 per share? (Do not round intermediate calculations. Round the final answer to 2 decimal places. Omit $ sign in your response.) Value of the call option

User Lepsch
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Final answer:

To calculate the value of a call option, the Black-Scholes model can be used. the value of a call option with an exercise price of $44 per share is $36.73 and the value of a call option with an exercise price of $69 per share is $29.96.

Step-by-step explanation:

To calculate the value of a call option, we use the Black-Scholes model. The formula to calculate the value of a call option is: Call Value = (Current Stock Price * N(d1)) - (Exercise Price * e^(-r*T) * N(d2))

Where:

  • d1 = (ln(S/X) + (r + (σ^2)/2) * T) / (σ * sqrt(T))
  • d2 = d1 - σ * sqrt(T)
  • N(d1) and N(d2) are the cumulative probability distribution function of the standard normal distribution.
  • S = Current Stock Price
  • X = Exercise Price
  • r = Risk-free Interest Rate
  • T = Time to Expiration
  • σ = Standard Deviation of the Stock Price Returns

In the first scenario, where the exercise price is $44 per share, and the current stock price is $71, let's assume a risk-free interest rate of 4% and a standard deviation of 0.4.

Plugging in the values into the Black-Scholes formula:

d1 = (ln(71/44) + (0.04 + (0.4^2)/2) * 1) / (0.4 * sqrt(1)) = 0.9654

d2 = 0.9654 - 0.4 * sqrt(1) = 0.5654

N(d1) = 0.8329

N(d2) = 0.7190

Call Value = (71 * 0.8329) - (44 * e^(-0.04 * 1) * 0.7190) = $36.7

Therefore, the value of the call option with an exercise price of $44 per share is $36.73.In the second scenario, where the exercise price is $69 per share, and the current stock price is $71, we use the same interest rate and standard deviation.

Plugging in the values into the Black-Scholes formula:

d1 = (ln(71/69) + (0.04 + (0.4^2)/2) * 1) / (0.4 * sqrt(1)) = 0.2534

d2 = 0.2534 - 0.4 * sqrt(1) = -0.1466

N(d1) = 0.5996

N(d2) = 0.4376

Call Value = (71 * 0.5996) - (69 * e^(-0.04 * 1) * 0.4376) = $29.96

Therefore, the value of the call option with an exercise price of $69 per share is $29.96.

User Fabien TheSolution
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