The candlestick chart is closely related to the bar chart. It also consists of four major prices: high, low, open, and close. (See Figure 5.6.) In addition to the common readings, the candlestick chart has a set of particular interpretations. It is also easier to view.The opening and closing prices form the body (jittai) of the candlestick. To indicate that the opening was lower than the closing, the body of the bar is left blank.
In its original form, the body was colored red. Current standard electronic displays allow you to keep it blank or select a color of your choice. If the currency closes below its opening, the body is filled. In its original form, the body was colored black, but the electronic displays allow you to keep it filled or to select a color of your choice. The intraday (or weekly) direction on a candlestick chart can be traced by means of two "shadows": the upper shadow (uwakage) and the lower shadow (shitakage).
Just as with a bar chart, the candlestick chart is unable to trace every price movement during a day's activity.
Thursday, July 8, 2010
Types of charts
The line chart is the original type of chart. In order to plot it, a line connects single prices for a selected time period. The most popular line chart is the daily chart. Although any point in the day can be plotted, most traders focus on the closing price, which they perceive as the most important. (See Figure 5.4.) But an immediate problem with the daily line chart is the fact that it is impossible to see the price activity for the balance of the day.Line charts are considered for technical analysis because due to the sophistication of current charting services, daily price activity does not need to be lost. Daily line charts are useful when looking for the big picture or the major trend because, without line charts, intraday activity would be-come an unimportant detail. When plotted over a long stretch of time, such as several years, a line chart is easier to visualize. Also, technical analysis goes well beyond chart formation; in order to execute certain models and techniques, line charts are better suited than any of the other charts.
However the line chart is a continuous chart, and this is a disadvantage because price gaps cannot be charted on a continuous chart.
Bar Chart
The bar chart is arguably the most popular type of chart currently in
use. It consists of four significant points (See figure 5.5.):
• the high and the low prices, which are united by a vertical bar;
• the opening price, which is marked with a little horizontal line to the left of the bar;
• the closing price, which is marked with a little horizontal line to the right of the bar.
The opening price is not always important for analysis. Bar charts have the obvious advantage of displaying the currency range for the period selected. The most popular period is daily, followed by weekly. Other periods may be selected as well. An advantage of this chart is that, unlike line charts, the bar chart is able to plot price gaps that are formed in the currency futures market. Although the currency futures market trades around the clock, physically it is open for only about a third of the trading day. (Chicago IMM is open for business 7:20 am to 2 pm CDT.)
Therefore, price gaps may occur between two days' price ranges. Incidentally, the bar chart is the chart of choice among currency futures traders.
Volume and Open Interest
Volume consists of the total amount of currency traded within a period of time, usually one day. For example, by year 2000, the total foreign currency daily trading volume was $1.4 trillion. But traders are naturally more interested in the volume of specific instruments for specific trading periods, because large trading volume suggests that there is interest and liquidity in a certain market, and low volume warns the trader to veer away from that market.
The risks of a low-volume market are usually very difficult to quantify or hedge. In addition, certain chart formations require heavy trading volume for successful development. An example is the head-and-shoulder formation. Therefore, despite its obvious importance, volume is not easy to quantify in all foreign exchange markets.
One method to estimate volume is to extrapolate the figures from the futures market. Another is "feeling" the size of volume based on the number of calls on the dealing systems or phones, and the "noise" from the brokers' market. Open interest is the total exposure, or outstanding position, in a certain instrument. The same problems that affect volume are also present here. As it was already mentioned, figures for volume and open interest are available for currency futures. If you have access to printed or electronic charts on futures, you will be able to see these numbers plotted at the bottom of the futures charts.
Volume and open interest figures are available from different sources, although one day late such as the newswires (Bridge Information Systems, Reuters, Bloomberg), newspapers (the Wall Street Journal, the Journal of Commerce), Weekly printed charts (Commodity Perspective, Commodity Trend Service).
The risks of a low-volume market are usually very difficult to quantify or hedge. In addition, certain chart formations require heavy trading volume for successful development. An example is the head-and-shoulder formation. Therefore, despite its obvious importance, volume is not easy to quantify in all foreign exchange markets.
One method to estimate volume is to extrapolate the figures from the futures market. Another is "feeling" the size of volume based on the number of calls on the dealing systems or phones, and the "noise" from the brokers' market. Open interest is the total exposure, or outstanding position, in a certain instrument. The same problems that affect volume are also present here. As it was already mentioned, figures for volume and open interest are available for currency futures. If you have access to printed or electronic charts on futures, you will be able to see these numbers plotted at the bottom of the futures charts.
Volume and open interest figures are available from different sources, although one day late such as the newswires (Bridge Information Systems, Reuters, Bloomberg), newspapers (the Wall Street Journal, the Journal of Commerce), Weekly printed charts (Commodity Perspective, Commodity Trend Service).
The Fundamentals Of Technical Analysis
Technical analysis is appointed to analyze market movement (the movement of prices, volumes and open interests) using the information obtained for a past time. Mainly, it is the chart study of past behavior of currencies prices in order to forecast their future performance. It is one of the most significant tools available for the forecasting of financial markets. Such analysis has been an increasingly utilized forecasting tool over the last two centuries.
The main strength of technical analysis is the flexibility with regard to the underlying instrument, regarding the markets and regarding the time frame. A trader who deals several currencies but specializes in one may easily apply the same technical expertise to trading another currency. A trader who specializes in spot trading can make a smooth transition to dealing currency futures by using chart studies, because the same technical principles apply over and over again, regardless of the market. Finally, different players have different trading styles, objectives, and time frames.
Technical analysis is easy to compute what is important while the technical services are becoming increasingly sophisticated and reasonably priced. Prior to this historic open market intervention, technical analysis provided ample selling signals.
Price
The Fundamental Principles of Technical Analysis are based on the Dow Theory with the following main thesis:
• The price is a comprehensive reflection of all the market forces. At any given time, all market information and forces are reflected in the currency prices.
• Price movements are historically repetitive.
• Price movements are trend followers.
• The market has three trends: primary, secondary, and minor. The primary trend has three phases: accumulation, run-up/run-down, and distribution. In the accumulation phase the shrewdest traders enter new positions. In the run-up/run-down phase, the majority of the market finally "sees" the move and jumps on the bandwagon.
Finally, in the distribution phase, the keenest traders take their profits and close their positions while the general trading interest slows down in an overshooting market. The secondary trend is a correction to the primary trend and may retrace one third, one-half or two-thirds from the primary trend.
• Volume must confirm the trend.
• Trends exist until their reversals are confirmed.
The main strength of technical analysis is the flexibility with regard to the underlying instrument, regarding the markets and regarding the time frame. A trader who deals several currencies but specializes in one may easily apply the same technical expertise to trading another currency. A trader who specializes in spot trading can make a smooth transition to dealing currency futures by using chart studies, because the same technical principles apply over and over again, regardless of the market. Finally, different players have different trading styles, objectives, and time frames.
Technical analysis is easy to compute what is important while the technical services are becoming increasingly sophisticated and reasonably priced. Prior to this historic open market intervention, technical analysis provided ample selling signals.
Price
The Fundamental Principles of Technical Analysis are based on the Dow Theory with the following main thesis:
• The price is a comprehensive reflection of all the market forces. At any given time, all market information and forces are reflected in the currency prices.
• Price movements are historically repetitive.
• Price movements are trend followers.
• The market has three trends: primary, secondary, and minor. The primary trend has three phases: accumulation, run-up/run-down, and distribution. In the accumulation phase the shrewdest traders enter new positions. In the run-up/run-down phase, the majority of the market finally "sees" the move and jumps on the bandwagon.
Finally, in the distribution phase, the keenest traders take their profits and close their positions while the general trading interest slows down in an overshooting market. The secondary trend is a correction to the primary trend and may retrace one third, one-half or two-thirds from the primary trend.
• Volume must confirm the trend.
• Trends exist until their reversals are confirmed.
Financial and Sociopolitical Factors
The Role of Financial Factors
Financial factors are vital to fundamental analysis. Changes in a government's monetary or fiscal policies are bound to generate changes in the economy, and these will be reflected in the exchange rates. Financial factors should be triggered only by economic factors. When governments focus on different aspects of the economy or have additional international responsibilities, financial factors may have priority over economic factors. This was painfully true in the case of the European Monetary System in the early 1990s. The realities of the marketplace revealed the underlying artificiality of this approach. Using the interest rates independently from the real economic environment translated into a very expensive strategy. Because foreign exchange, by definition, consists of simultaneous transactions in two currencies, then it follows that the market must focus on two respective interest rates as well. This is the interest rate differential, a basic factor in the markets. Traders react when the interest rate differential changes, not simply when the interest rates themselves change. For example, if all the G-5 countries decided to simultaneously lower their interest rates by 0.5 percent, the move would be neutral for foreign exchange, because the interest rate differentials would also be neutral. Of course, most of the time the discount rates are cut unilaterally, a move that generates changes in both the interest differential and the exchange rate. Traders approach the interest rates like any other factor, trading on expectations and facts. For example, if rumor says that a discount rate will be cut, the respective currency will be sold before the fact. Once the cut occurs, it is quite possible that the currency will be bought back, or the other way around. An unexpected change in interest rates is likely to trigger a sharp currency move. "Buy on the rumor, sell on the fact...” Other factors affecting the trading decision are the time lag between the rumor and the fact, the reasons behind the interest rate change, and the perceived importance of the change. The market generally prices in a discount rate change that was delayed. Since it is a fait accompli, it is neutral to the market. If the discount rate was changed for political rather than economic reasons, what is a common practice in the European Monetary System, the markets are likely to go against the central banks, sticking to the real fundamentals rather than the political ones. This happened in both September 1992 and the summer of 1993, when the European central banks lost unprecedented amounts of money trying to prop up their currencies, despite having high interest rates. The market perceived those interest rates as artificially high and, therefore, aggressively sold the respective currencies. Finally, traders deal on the perceived importance of a change in the interest rate differential.
Political Events and Crises
Political events generally take place over a period of time, but political crises strike suddenly. They are almost always, by definition, unexpected. Currency traders have a knack for responding to crises. Speed is essential; shooting from the hip is the only fighting option. The traders' reflexes take over. Without fast action, traders can be left out in the cold. There is no time for analysis, and only a split second, at best, to act. As volume drops dramatically, trading is hindered by a crisis. Prices dry out quickly, and sometimes the spreads between bid and offer jump from 5 pips to 100 pips. Getting back to the market is difficult.
Financial factors are vital to fundamental analysis. Changes in a government's monetary or fiscal policies are bound to generate changes in the economy, and these will be reflected in the exchange rates. Financial factors should be triggered only by economic factors. When governments focus on different aspects of the economy or have additional international responsibilities, financial factors may have priority over economic factors. This was painfully true in the case of the European Monetary System in the early 1990s. The realities of the marketplace revealed the underlying artificiality of this approach. Using the interest rates independently from the real economic environment translated into a very expensive strategy. Because foreign exchange, by definition, consists of simultaneous transactions in two currencies, then it follows that the market must focus on two respective interest rates as well. This is the interest rate differential, a basic factor in the markets. Traders react when the interest rate differential changes, not simply when the interest rates themselves change. For example, if all the G-5 countries decided to simultaneously lower their interest rates by 0.5 percent, the move would be neutral for foreign exchange, because the interest rate differentials would also be neutral. Of course, most of the time the discount rates are cut unilaterally, a move that generates changes in both the interest differential and the exchange rate. Traders approach the interest rates like any other factor, trading on expectations and facts. For example, if rumor says that a discount rate will be cut, the respective currency will be sold before the fact. Once the cut occurs, it is quite possible that the currency will be bought back, or the other way around. An unexpected change in interest rates is likely to trigger a sharp currency move. "Buy on the rumor, sell on the fact...” Other factors affecting the trading decision are the time lag between the rumor and the fact, the reasons behind the interest rate change, and the perceived importance of the change. The market generally prices in a discount rate change that was delayed. Since it is a fait accompli, it is neutral to the market. If the discount rate was changed for political rather than economic reasons, what is a common practice in the European Monetary System, the markets are likely to go against the central banks, sticking to the real fundamentals rather than the political ones. This happened in both September 1992 and the summer of 1993, when the European central banks lost unprecedented amounts of money trying to prop up their currencies, despite having high interest rates. The market perceived those interest rates as artificially high and, therefore, aggressively sold the respective currencies. Finally, traders deal on the perceived importance of a change in the interest rate differential.
Political Events and Crises
Political events generally take place over a period of time, but political crises strike suddenly. They are almost always, by definition, unexpected. Currency traders have a knack for responding to crises. Speed is essential; shooting from the hip is the only fighting option. The traders' reflexes take over. Without fast action, traders can be left out in the cold. There is no time for analysis, and only a split second, at best, to act. As volume drops dramatically, trading is hindered by a crisis. Prices dry out quickly, and sometimes the spreads between bid and offer jump from 5 pips to 100 pips. Getting back to the market is difficult.
Economic Indicators
Economic indicators occur in a steady stream, at certain times, and a little more often than changes in interest rates, governments, or natural activity such as earthquakes etc. Economic data is generally (except of the Gross Domestic Product and the Employment Cost Index, which are released quarterly) released on a monthly basis. All economic indicators are released in pairs. The first number reflects the latest period. The second number is the revised figure for the month prior to the latest period. For instance, in July, economic data is released for the month of June, the latest period. In addition, the release includes the revision of the same economic indicator figure for the month of May. The reason for the revision is that the department in charge of the economic statistics compilation is in a better position to gather more information in a month's time. This feature is important for traders. If the figure for an economic indicator is better than expected by 0.4 percent for the past month, but the previous month's number is revised lower by 0.4 percent, then traders are likely to ignore the overall release of that specific economic data.
Economic indicators are released at different times. In the United States, economic data is generally released at 8:30 and 10 am ET. It is important to remember that the most significant data for foreign exchange is released at 8:30 am ET. In order to allow time for last-minute adjustments, the United States currency futures markets open at 8:20 am ET. Information on upcoming economic indicators is published in all leading newspapers, such as the Wall Street Journal, the Financial Times, and the New York Times; and business magazines, such as Business Week. More often than not, traders use the monitor sources—Bridge Information Systems, Reuters, or Bloomberg—to gather information both from news publications and from the sources' own up-to-date information.
The Gross National Product (GNP)
The Gross National Product measures the economic performance of the whole economy. This indicator consists, at macro scale, of the sum of consumption spending, investment spending, government spending, and net trade. The gross national product refers to the sum of all goods and services produced by United States residents, either in the United States or abroad.
The Gross Domestic Product (GDP)
The Gross Domestic Product (GDP) refers to the sum of all goods and services produced in the United States, either by domestic or foreign companies. The differences between the two are nominal in the case of the economy of the United States. GDP figures are more popular outside the United States. In order to make it easier to compare the performances of different economies, the United States also releases GDP figures.
Consumption Spending
Consumption is made possible by personal income and discretionary income. The decision by consumers to spend or to save is psychological in nature. Consumer confidence is also measured as an important indicator of the propensity of consumers who have discretionary income to switch from saving to buying.
Investment Spending
Investment—or gross private domestic spending - consists of fixed investment and inventories.
Government Spending
Government spending is very influential in terms of both sheer size and its impact on other economic indicators, due to special expenditures. For instance, United States military expenditures had a significant role in total U.S. employment until 1990. The defense cuts that occurred at the time increased unemployment figures in the short run.
Net Trade
Net trade is another major component of the GNP. Worldwide internationalization and the economic and political developments since 1980 have had a sharp impact on the United States' ability to compete overseas. The U.S. trade deficit of the past decades has slowed down the overall GNP.
GNP can be approached in two ways:
• flow of product
• Flow of cost.
Industrial Production
Industrial production consists of the total output of a nation's plants, utilities, and mines. From a fundamental point of view, it is an important economic indicator that reflects the strength of the economy, and by extrapolation, the strength of a specific currency. Therefore, foreign exchange traders use this economic indicator as a potential trading signal.
Capacity Utilization
Capacity utilization consists of total industrial output divided by total production capability. The term refers to the maximum level of output a plant can generate under normal business conditions. In general, capacity utilization is not a major economic indicator for the foreign exchange market. However, there are instances when its economic implications are useful for fundamental analysis. A "normal" figure for a steady economy is 81.5 percent. If the figure reads 85 percent or more, the data suggests that the industrial production is overheating, that the economy is close to full capacity.
High capacity utilization rates precede inflation, and expectation in the foreign exchange market is that the central bank will raise interest rates in order to avoid or fight inflation.
Factory Orders
Factory orders refer to the total of durable and nondurable goods orders. Nondurable goods consist of food, clothing, light industrial products, and products designed for the maintenance of durable goods. Durable goods orders are discussed separately. The factory orders indicator has limited significance for foreign exchange traders.
Durable Goods Orders
Durable goods orders consist of products with a life span of more than three years. Examples of durable goods are autos, appliances, furniture, jewelry, and toys. They are divided into four major categories: primary metals, machinery, electrical machinery, and transportation. In order to eliminate the volatility pertinent to large military orders, the indicator includes a breakdown of the orders between defense and nondefense. This data is fairly important to foreign exchange markets because it gives a good indication of consumer confidence. Because durable goods cost more than nondurables, a high number in this indicator shows consumers' propensity to spend. Therefore, a good figure is generally bullish for the domestic currency.
Business Inventories
Business inventories consist of items produced and held for future sale. The compilation of this information is facile and holds little surprise for the market. Moreover, financial management and computerization help control business inventories in unprecedented ways. Therefore, the importance of this indicator for foreign exchange traders is limited.
Economic indicators are released at different times. In the United States, economic data is generally released at 8:30 and 10 am ET. It is important to remember that the most significant data for foreign exchange is released at 8:30 am ET. In order to allow time for last-minute adjustments, the United States currency futures markets open at 8:20 am ET. Information on upcoming economic indicators is published in all leading newspapers, such as the Wall Street Journal, the Financial Times, and the New York Times; and business magazines, such as Business Week. More often than not, traders use the monitor sources—Bridge Information Systems, Reuters, or Bloomberg—to gather information both from news publications and from the sources' own up-to-date information.
The Gross National Product (GNP)
The Gross National Product measures the economic performance of the whole economy. This indicator consists, at macro scale, of the sum of consumption spending, investment spending, government spending, and net trade. The gross national product refers to the sum of all goods and services produced by United States residents, either in the United States or abroad.
The Gross Domestic Product (GDP)
The Gross Domestic Product (GDP) refers to the sum of all goods and services produced in the United States, either by domestic or foreign companies. The differences between the two are nominal in the case of the economy of the United States. GDP figures are more popular outside the United States. In order to make it easier to compare the performances of different economies, the United States also releases GDP figures.
Consumption Spending
Consumption is made possible by personal income and discretionary income. The decision by consumers to spend or to save is psychological in nature. Consumer confidence is also measured as an important indicator of the propensity of consumers who have discretionary income to switch from saving to buying.
Investment Spending
Investment—or gross private domestic spending - consists of fixed investment and inventories.
Government Spending
Government spending is very influential in terms of both sheer size and its impact on other economic indicators, due to special expenditures. For instance, United States military expenditures had a significant role in total U.S. employment until 1990. The defense cuts that occurred at the time increased unemployment figures in the short run.
Net Trade
Net trade is another major component of the GNP. Worldwide internationalization and the economic and political developments since 1980 have had a sharp impact on the United States' ability to compete overseas. The U.S. trade deficit of the past decades has slowed down the overall GNP.
GNP can be approached in two ways:
• flow of product
• Flow of cost.
Industrial Production
Industrial production consists of the total output of a nation's plants, utilities, and mines. From a fundamental point of view, it is an important economic indicator that reflects the strength of the economy, and by extrapolation, the strength of a specific currency. Therefore, foreign exchange traders use this economic indicator as a potential trading signal.
Capacity Utilization
Capacity utilization consists of total industrial output divided by total production capability. The term refers to the maximum level of output a plant can generate under normal business conditions. In general, capacity utilization is not a major economic indicator for the foreign exchange market. However, there are instances when its economic implications are useful for fundamental analysis. A "normal" figure for a steady economy is 81.5 percent. If the figure reads 85 percent or more, the data suggests that the industrial production is overheating, that the economy is close to full capacity.
High capacity utilization rates precede inflation, and expectation in the foreign exchange market is that the central bank will raise interest rates in order to avoid or fight inflation.
Factory Orders
Factory orders refer to the total of durable and nondurable goods orders. Nondurable goods consist of food, clothing, light industrial products, and products designed for the maintenance of durable goods. Durable goods orders are discussed separately. The factory orders indicator has limited significance for foreign exchange traders.
Durable Goods Orders
Durable goods orders consist of products with a life span of more than three years. Examples of durable goods are autos, appliances, furniture, jewelry, and toys. They are divided into four major categories: primary metals, machinery, electrical machinery, and transportation. In order to eliminate the volatility pertinent to large military orders, the indicator includes a breakdown of the orders between defense and nondefense. This data is fairly important to foreign exchange markets because it gives a good indication of consumer confidence. Because durable goods cost more than nondurables, a high number in this indicator shows consumers' propensity to spend. Therefore, a good figure is generally bullish for the domestic currency.
Business Inventories
Business inventories consist of items produced and held for future sale. The compilation of this information is facile and holds little surprise for the market. Moreover, financial management and computerization help control business inventories in unprecedented ways. Therefore, the importance of this indicator for foreign exchange traders is limited.
Modern Monetary Theories on Short-Term Exchange Rate Volatility
The modern monetary theories on short-term exchange rate volatility take into consideration the short-term capital markets' role and the long-term impact of the commodity markets on foreign exchange. These theories hold that the divergence between the exchange rate and the purchasing power parity is due to the supply and demand for financial assets and the international capability.
One of the modern monetary theories states that exchange rate volatility is triggered by a one-time domestic money supply increase, because this is assumed to raise expectations of higher future monetary growth. The purchasing power parity theory is extended to include the capital markets. If, in both countries whose currencies are exchanged, the demand for money is determined by the level of domestic income and domestic interest rates, then a higher income increases demand for transactions balances while a higher interest rate increases the opportunity cost of holding money, reducing the demand for money.
Under a second approach, the exchange rate adjusts instantaneously to maintain continuous interest rate parity, but only in the long run to maintain PPP. Volatility occurs because the commodity markets adjust more slowly than the financial markets. This version is known as the dynamic monetary approach.
The Portfolio-Balance Approach
The portfolio-balance approach holds that currency demand is triggered by the demand for financial assets, rather than the demand for the currency per se.
Synthesis of Traditional and Modern Monetary Views
In order to better suit the previous theories to the realities of the market, some of the more stringent conditions were adjusted into a synthesis of the traditional and modern monetary theories. A short-term capital outflow induced by a monetary shock creates a payments imbalance that requires an exchange rate change to maintain balance of payments equilibrium. Speculative forces, commodity markets disturbances, and the existence of short-term capital mobility trigger the exchange rate volatility. The degree of change in the exchange rate is a function of consumers' elasticity of demand. Because the financial markets adjust faster than the commodities markets, the exchange rate tends to be affected in the short term by capital market changes, and in the long term by commodities changes.
One of the modern monetary theories states that exchange rate volatility is triggered by a one-time domestic money supply increase, because this is assumed to raise expectations of higher future monetary growth. The purchasing power parity theory is extended to include the capital markets. If, in both countries whose currencies are exchanged, the demand for money is determined by the level of domestic income and domestic interest rates, then a higher income increases demand for transactions balances while a higher interest rate increases the opportunity cost of holding money, reducing the demand for money.
Under a second approach, the exchange rate adjusts instantaneously to maintain continuous interest rate parity, but only in the long run to maintain PPP. Volatility occurs because the commodity markets adjust more slowly than the financial markets. This version is known as the dynamic monetary approach.
The Portfolio-Balance Approach
The portfolio-balance approach holds that currency demand is triggered by the demand for financial assets, rather than the demand for the currency per se.
Synthesis of Traditional and Modern Monetary Views
In order to better suit the previous theories to the realities of the market, some of the more stringent conditions were adjusted into a synthesis of the traditional and modern monetary theories. A short-term capital outflow induced by a monetary shock creates a payments imbalance that requires an exchange rate change to maintain balance of payments equilibrium. Speculative forces, commodity markets disturbances, and the existence of short-term capital mobility trigger the exchange rate volatility. The degree of change in the exchange rate is a function of consumers' elasticity of demand. Because the financial markets adjust faster than the commodities markets, the exchange rate tends to be affected in the short term by capital market changes, and in the long term by commodities changes.
Economic Fundamentals
Theories of Exchange Rate Determination
Fundamentals may be classified into economic factors, financial factors, political factors, and crises. Economic factors differ from the other three factors in terms of the certainty of their release. The dates and times of economic data release are known well in advance, at least among the industrialized nations. Below are given briefly several known theories of exchange rate determination.
Purchasing Power Parity
Purchasing power parity states that the price of a good in one country should equal the price of the same good in another country, exchanged at the current rate—the law of one price. There are two versions of the purchasing power parity theory: the absolute version and the relative version. Under the absolute version, the exchange rate simply equals the ratio of the two countries' general price levels, which is the weighted average of all goods produced in a country. However, this version works only if it is possible to find two countries, which produce or consume the same goods. Moreover, the absolute version assumes that transportation costs and trade barriers are insignificant. In reality, transportation costs are significant and dissimilar round the world. Trade barriers are still alive and well, sometimes obvious and sometimes hidden, and they influence costs and goods distribution.
Finally, this version disregards the importance of brand names. For example, cars are chosen not only based on the best price for the same type of car, but also on the basis of the name ("You are what you drive").
The PPP Relative Version
Under the relative version, the percentage change in the exchange rate from a given base period must equal the difference between the percentage change in the domestic price level and the percentage change in the foreign price level. The relative version of the PPP is also not free of problems: it is difficult or arbitrary to define the base period, trade restrictions remain a real and thorny issue, just as with the absolute version, different price index weighting and the inclusion of different products in the indexes make the comparison difficult and in the long term, countries'internal price ratios may change, causing the exchange rate to move away from the relative PPP. In conclusion, the spot exchange rate moves independently of relative domestic and foreign prices. In the short run, the exchange rate is influenced by financial and not by commodity market conditions.
Theory of Elasticities
The theory of elasticities holds that the exchange rate is simply the price of foreign exchange that maintains the balance of payments in equilibrium. For instance, if the imports of country A are strong, then the trade balance is weak. Consequently, the exchange rate rises, leading to the growth of country A's exports, and triggers in turn a rise in its domestic income, along with a decrease in its foreign income. Whereas a rise in the domestic income (in country A) will trigger an increase in the domestic consumption of both domestic and foreign goods and, therefore, more demand for foreign currencies, a decrease in the foreign income (in country B) will trigger a decrease in the domestic consumption of both country B's domestic and foreign goods, and therefore less demand for its own currency. The elasticities approach is not problem-free because in the short term the exchange rate is more inelastic than it is in the long term and the additional exchange rate variables arise continuously, changing the rules of the game.
Fundamentals may be classified into economic factors, financial factors, political factors, and crises. Economic factors differ from the other three factors in terms of the certainty of their release. The dates and times of economic data release are known well in advance, at least among the industrialized nations. Below are given briefly several known theories of exchange rate determination.
Purchasing Power Parity
Purchasing power parity states that the price of a good in one country should equal the price of the same good in another country, exchanged at the current rate—the law of one price. There are two versions of the purchasing power parity theory: the absolute version and the relative version. Under the absolute version, the exchange rate simply equals the ratio of the two countries' general price levels, which is the weighted average of all goods produced in a country. However, this version works only if it is possible to find two countries, which produce or consume the same goods. Moreover, the absolute version assumes that transportation costs and trade barriers are insignificant. In reality, transportation costs are significant and dissimilar round the world. Trade barriers are still alive and well, sometimes obvious and sometimes hidden, and they influence costs and goods distribution.
Finally, this version disregards the importance of brand names. For example, cars are chosen not only based on the best price for the same type of car, but also on the basis of the name ("You are what you drive").
The PPP Relative Version
Under the relative version, the percentage change in the exchange rate from a given base period must equal the difference between the percentage change in the domestic price level and the percentage change in the foreign price level. The relative version of the PPP is also not free of problems: it is difficult or arbitrary to define the base period, trade restrictions remain a real and thorny issue, just as with the absolute version, different price index weighting and the inclusion of different products in the indexes make the comparison difficult and in the long term, countries'internal price ratios may change, causing the exchange rate to move away from the relative PPP. In conclusion, the spot exchange rate moves independently of relative domestic and foreign prices. In the short run, the exchange rate is influenced by financial and not by commodity market conditions.
Theory of Elasticities
The theory of elasticities holds that the exchange rate is simply the price of foreign exchange that maintains the balance of payments in equilibrium. For instance, if the imports of country A are strong, then the trade balance is weak. Consequently, the exchange rate rises, leading to the growth of country A's exports, and triggers in turn a rise in its domestic income, along with a decrease in its foreign income. Whereas a rise in the domestic income (in country A) will trigger an increase in the domestic consumption of both domestic and foreign goods and, therefore, more demand for foreign currencies, a decrease in the foreign income (in country B) will trigger a decrease in the domestic consumption of both country B's domestic and foreign goods, and therefore less demand for its own currency. The elasticities approach is not problem-free because in the short term the exchange rate is more inelastic than it is in the long term and the additional exchange rate variables arise continuously, changing the rules of the game.
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