Question 3 2017:
Suppose that the current one-year interest rate is at 2%, the
two-year rate is at
3% and the three-year rate is at 4%. A trader quotes the one-year
rate, one year
forward as 4.2%. Assume that there is no bid-ask spread (i.e., you
can lend and
borrow at the same rate) and that no other trader is quoting in the
forward
market.
a) What is the one-year forward rate for a contract that expires in
one year?
b) How would you trade if the one-year forward rate quoted by the
trader was 3%?
c) Calculate the one-year forward rate for a contract that expires
in three years.
a) Let the one year forward rate be x
If there is no arbitrage opportunity investing in a two year rate will be same as investing investing in 1 year and again buying a forward contract after 1 year that expires in one year
Therefore, (1+3%)^2 = (1+2%)*(1+x)
x = 4%
b) One year forward rate quoted by the trader is less than the no arbitrage one year forward rate calculated in above solution
Hence we can borrow at 1 year forward rate from the trader pay 3% and invest this amount for 2 years in spot market at 3%
c)
Let the one year forward rate that expires in 3 years be y
If there is no arbitrage opportunity investing in a three year rate will be same as investing investing in 2 year rate and again buying a forward contract after 1 year that expires in third year
Therefore, (1+4%)^3 = (1+3%)^2*(1+y)
y = 6.02%
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