Understanding
Fundamental Analysis
The two primary approaches of analyzing currency
markets are fundamental analysis and technical
analysis. Fundamentals focus on financial and
economic theories, as well as political developments
to determine forces of supply and demand. One
clear point of distinction between fundamentals
and technicals is that fundamental analysis studies
the causes of market movements, while technical
analysis studies the effects of market movements.
Fundamental analysis comprises the examination
of macroeconomic indicators, asset markets, and
political considerations when evaluating one nation's
currency relative to another. Macroeconomic indicators
include figures such as growth rates; as measured
by Gross Domestic Product, interest rates, inflation,
unemployment, money supply, foreign exchange reserves
and productivity. Asset markets comprise stocks,
bonds, and real estate. Political considerations
impact the level of confidence in a nation's government,
the climate of stability and level of certainty.
Sometimes governments stand in the way of market
forces impacting their currencies, and hence,
intervene to keep currencies from deviating markedly
from undesired levels. Currency interventions
are conducted by central banks and usually have
a notable, albeit a temporary, impact on FX markets.
A central bank could undertake unilateral purchases/sales
of its currency against another currency; or engage
in a concerted intervention in which it collaborates
with other central banks for a much more pronounced
effect. Alternatively, some countries can manage
to move their currencies, merely by hinting, or
threatening to intervene.
The Basic Theories
Purchasing Power Parity
The PPP theory states that exchange rates are
determined by the relative prices of similar baskets
of goods. Changes in inflation rates are expected
to be offset by equal but opposite changes in
the exchange rate. Take the classic example of
hamburgers. If the burger costs $2.00 in the US
and £1.00 in the UK, then according to PPP,
the £-$ exchange rate must be 2 dollars
per one British pound. If the prevailing market
exchange rate is $1.7 per British pound, then
the pound is said to be undervalued and the dollar
overvalued. The theory then postulates that the
two currencies will eventually move towards the
2:1 relation.
PPP's major weakness is that it assumes goods
are easily tradable, with no costs to trade such
as tariffs, quotas or taxes. Another weakness
is that it applies only for goods and ignores
services, where room for differences in value
is significant. Furthermore, there are several
factors besides inflation and interest rate differentials
impacting exchange rates, such as economic releases/reports,
asset markets and political developments. There
was little empirical evidence of the effectiveness
of PPP prior to the 1990s. Thereafter, PPP was
seen to have worked only in the long term (3-5
years) when prices eventually correct towards
parity.
Interest Rate Parity
IRP states that an appreciation (depreciation)
of one currency against another currency must
be neutralized by a change in the interest rate
differential. If US interest rates exceed Japanese
interest rates, then the US dollar should depreciate
against the Japanese yen by an amount that prevents
riskless arbitrage. The future exchange rate is
reflected into the forward exchange rate stated
today. In our example, the forward exchange rate
of the dollar is said to be at discount because
it buys fewer Japanese yen in the forward rate
than it does in the spot rate. The yen is said
to be at a premium.
IRP showed no proof of working after the 1990s.
Contrary to the theory, currencies with higher
interest rates characteristically appreciated
rather than depreciated on the reward of future
containment of inflation and a higher yielding
currency.
Balance of Payments Model
This model holds that a foreign exchange rate
must be at its equilibrium level—the rate
that produces a stable current account balance.
A nation with a trade deficit will experience
a reduction in its foreign exchange reserves,
which ultimately lowers (depreciates) the value
of its currency. The cheaper currency renders
the nation' goods (exports) more affordable in
the global market place while making imports more
expensive. After an intermediate period, imports
are forced down and exports rise, thus stabilizing
the trade balance and the currency towards equilibrium.
Like PPP, the balance of payments model focuses
largely on tradable goods and services, while
ignoring the increasing role of global capital
flows. In other words, money is not only chasing
goods and services, but to a larger extent, financial
assets such as stocks and bonds. Such flows go
into the capital account item of the balance of
payments, thus, balancing the deficit in the current
account. The increase in capital flows has given
rise to the Asset Market Model.
Asset Market Model
The explosion in trading of financial assets (stocks
and bonds) has reshaped the way analysts and traders
look at currencies. Economic variables such as
growth, inflation, and productivity are no longer
the only drivers of currency movements. The proportion
of foreign exchange transactions stemming from
cross border-trading of financial assets has dwarfed
the extent of currency transactions generated
from trading in goods and services. The asset
market approach views currencies as asset prices
traded in an efficient financial market. Consequently,
currencies are increasingly demonstrating a strong
correlation with asset markets, particularly equities.
|