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Question 1 To answer this question, please start by builiding and calibrating a 1 0 - period Black - Derman - Toy model for the
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To answer this question, please start by builiding and calibrating a period BlackDermanToy model for the shortrate,
r
ij
You may assume that the termstructure of interest rates observed in the market place is:
Period
Spot Rate
As in the video modules, these interest rates assume perperiod compounding. For example, the marketprice of a zerocoupon bond that matures in period
is
Z
assuming a face value of
Assume
b is a constant for all
i in the BDT model as we assumed in the video lectures. Calibrate the
a
i
parameters so that the model termstructure matches the market termstructure. Be sure that the final error returned by Solver is at most
This can be achieved by rerunning Solver multiple times if necessary, starting each time with the solution from the previous call to Solver.
Once your model has been calibrated, compute the price of a payer swaption with notional $M that expires at time
t with an option strike of
You may assume the underlying swap has a fixed rate of
and that if the option is exercised then cashflows take place at times
tThe cashflow at time
ti is based on the shortrate that prevailed in the previous period, ie the payments of the underlying swap are made in arrears.
Submission Guideline: Give your answer rounded to the nearest integer. For example, if you compute the answer to be submit
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