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Forex: Liquidity
Buy on the up arrows, sell on the down arrows
This tool is intended to
predict exchange rate movements based on government policies, using data on monetary
policy available at the time, specifically comparative real interest rates and real
effective exchange rates, as calculated by PIT for all countries in the database. For
comparability, exchange rates have been rebased to set year-end 1994 at 100.
In each chart the currency
index is shown as the thick
white line on the right hand
axis, as is the real effective exchange rate. The first explanatory variable, domestic
less foreign real interest rate, uses the left hand axis, shown as the thin yellow line. Best Guesses as to the future direction are
shown as red arrows alongside the currency. Unlike other
explanatory variables, the second one, the real exchange rate, shown as the light green line, uses the rights hand axis, because it is
indexed on a comparable basis to the actual exchange rate, that is to say both are equal
as at year-end 1994.
Depending on whether the
investment perspective is Dollar-based or relative to a global benchmark, the relevant
foreign data are those for the United States or a GDP weighted global average.
This tool works on the
assumption that governments rarely make a change in policy all at once, but spread out
over a number of intermediate steps, so the effects of a change create a trend over time
that investors can exploit. However, in times of crisis this is not the case.
Buy signals are generated
when two conditions are met - the real effective exchange rate is depressed and real
interest rates begin to rise compared to international levels. Sell signals arise when the
converse applies. Noise reduction methods have been employed to minimise the number of
signals. Please note that this system may not catch all important moves.
Owing to the conversion of
legacy currencies into Euros, analysis is provided on the common currency, rather than for
individual countries. Historical data is provided by creating synthetic GDP-weighted
time-series for the component currencies, expressed in the European Currency Unit.
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