
country markets are at least semi-strong form,
4
to preserve market equilibrium there can
only be one set of forward rates from a given spot rate curve. However, this does not mean
that such rates are a prediction because the instant after they have been calculated, new
market knowledge may become available that alters the market's view of future interest
rates. This will cause the forward rate curve to change.
Forward rates are important because they are required to make prices today for dealing
at a future date. For example a bank's corporate customer may wish to fix today the interest
rate payable on a loan that begins in one year from now; what