We will derive a two-state put option value in this problem.
Data: S0 = 240; X = 250; 1 +
r = 1.1. The two possibilities for ST
are 270 and 170.
a. The range of S is 100 while that of
P is 80 across the two states. What is the hedge ratio of
the put? (Negative value should be indicated by a minus
sign. Round your answer to 2 decimal places.)
b. Form a portfolio of 4 shares of stock and 5
puts. What is the (nonrandom) payoff to this portfolio?
(Round your answer to 2 decimal places.)
c. What is the present value of the portfolio?
(Round your answer to 2 decimal places.)
d. Given that the stock currently is selling at
240, calculate the put value. (Round your answer to 2
decimal places.
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