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Practice Question 2 : Valuation with a Binomial Lattice Approach The current market price of a stock is 4 5 . 5 . Over the
Practice Question : Valuation with a Binomial Lattice Approach
The current market price of a stock is Over the next two quarters, this stock is projected
to either increase by or decrease by each period, as per a binomial lattice model. The
riskfree interest rate is per annum, with continuous compounding.
a Calculate the price of a month European call option on this nondividendpaying stock
with an exercise price of
b Calculate the price of a month European put option on the same nondividendpaying
stock with an exercise price of
c Ensure that the calculated prices from a and b are consistent with the putcall parity
relationship.
d In the given market model, an investment bank has introduced an Asian call option that
accounts for the full history of the stock's value. The payoff for this option is:
from to
where is the total number of periods in the market model. Determine the initial price of the
Asian call option with an exercise price of at time
Hint: Apply a similar pricing strategy as used for the European call and put options, but with
more precision. The value of the option at the final interval's midpoint ie Sud or Sdu
will differ based on the stock's price path. Careful calculation is required to capture this
distinction.
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