الاثنين، 30 يونيو 2014

Forex Tutorial: Economic Theories, Models, Feeds & Data

There is a great deal of academic theory revolving around currencies. While often not applicable directly to day-to-day trading, it is helpful to understand the overarching ideas behind the academic research.

The main economic theories found in the foreign exchange deal with parity conditions. A parity condition is an economic explanation of the price at which two currencies should be exchanged, based on factors such as inflation and interest rates. The economic theories suggest that when the parity condition does not hold, an arbitrage opportunity exists for market participants. However, arbitrage opportunities, as in many other markets, are quickly discovered and eliminated before even giving the individual investor an opportunity to capitalize on them. Other theories are based on economic factors such as trade, capital flows and the way a country runs its operations. We review each of them briefly below.

Major Theories: Purchasing Power Parity Purchasing Power Parity (PPP) is the economic theory that price levels between two countries should be equivalent to one another after exchange-rate adjustment. The basis of this theory is the law of one price, where the cost of an identical good should be the same around the world. Based on the theory, if there is a large difference in price between two countries for the same product after exchange rate adjustment, an arbitrage opportunity is created, because the product can be obtained from the country that sells it for the lowest price.

The relative version of PPP is as follows:

Where 'e' represents the rate of change in the exchange rate and 'π1' and 'π2'represent the rates of inflation for country 1 and country 2, respectively.

For example, if the inflation rate for country XYZ is 10% and the inflation for country ABC is 5%, then ABC's currency should appreciate 4.76% against that of XYZ.


Interest Rate Parity The concept of Interest Rate Parity (IRP) is similar to PPP, in that it suggests that for there to be no arbitrage opportunities, two assets in two different countries should have similar interest rates, as long as the risk for each is the same. The basis for this parity is also the law of one price, in that the purchase of one investment asset in one country should yield the same return as the exact same asset in another country; otherwise exchange rates would have to adjust to make up for the difference.

The formula for determining IRP can be found by:

Where 'F' represents the forward exchange rate; 'S' represents the spot exchange rate; 'i1' represents the interest rate in country 1; and 'i2' represents the interest rate in country 2.

International Fisher Effect The International Fisher Effect (IFE) theory suggests that the exchange rate between two countries should change by an amount similar to the difference between their nominal interest rates. If the nominal rate in one country is lower than another, the currency of the country with the lower nominal rate should appreciate against the higher rate country by the same amount.

The formula for IFE is as follows:

Where 'e' represents the rate of change in the exchange rate and 'i1' and 'i2'represent the rates of inflation for country 1 and country 2, respectively.

Balance of Payments Theory A country's balance of payments is comprised of two segments - the current account and the capital account - which measure the inflows and outflows of goods and capital for a country. The balance of payments theory looks at the current account, which is the account dealing with trade of tangible goods, to get an idea of exchange-rate directions.

If a country is running a large current account surplus or deficit, it is a sign that a country's exchange rate is out of equilibrium. To bring the current account back into equilibrium, the exchange rate will need to adjust over time. If a country is running a large deficit (more imports than exports), the domestic currency will depreciate. On the other hand, a surplus would lead to currency appreciation.

The balance of payments identity is found by:
Where BCA represents the current account balance; BKA represents the capital account balance; and BRA represents the reserves account balance.

Real Interest Rate Differentiation Model The Real Interest Rate Differential Model simply suggests that countries with higher real interest rates will see their currencies appreciate against countries with lower interest rates. The reason for this is that investors around the world will move their money to countries with higher real rates to earn higher returns, which bids up the price of the higher real rate currency.

Asset Market Model The Asset Market Model looks at the inflow of money into a country by foreign investors for the purpose of purchasing assets such as stocks, bonds and other financial instruments. If a country is seeing large inflows by foreign investors, the price of its currency is expected to increase, as the domestic currency needs to be purchased by these foreign investors. This theory considers the capital account of the balance of trade compared to the current account in the prior theory. This model has gained more acceptance as the capital accounts of countries are starting to greatly outpace the current account as international money flow increases.

Monetary Model The Monetary Model focuses on a country's monetary policy to help determine the exchange rate. A country's monetary policy deals with the money supply of that country, which is determined by both the interest rate set by central banks and the amount of money printed by the treasury. Countries that adopt a monetary policy that rapidly grows its monetary supply will see inflationary pressure due to the increased amount of money in circulation. This leads to a devaluation of the currency.

These economic theories, which are based on assumptions and perfect situations, help to illustrate the basic fundamentals of currencies and how they are impacted by economic factors. However, the fact that there are so many conflicting theories indicates the difficulty in any one of them being 100% accurate in predicting currency fluctuations. Their importance will likely vary by the different market environment, but it is still important to know the fundamental basis behind each of the theories.

Economic Data Economic theories may move currencies in the long term, but on a shorter-term, day-to-day or week-to-week basis, economic data has a more significant impact. It is often said the biggest companies in the world are actually countries and that their currency is essentially shares in that country. Economic data, such as the latest gross domestic product (GDP) numbers, are often considered to be like a company's latest earnings data. In the same way that financial news and current events can affect a company's stock price, news and information about a country can have a major impact on the direction of that country's currency. Changes in interest rates, inflation, unemployment, consumer confidence, GDP, political stability etc. can all lead to extremely large gains/losses depending on the nature of the announcement and the current state of the country.

The number of economic announcements made each day from around the world can be intimidating, but as one spends more time learning about the forex market it becomes clear which announcements have the greatest influence. Listed below are a number of economic indicators that are generally considered to have the greatest influence - regardless of which country the announcement comes from.

Employment Data Most countries release data about the number of people that currently are employed within that economy. In the U.S., this data is known as non-farm payrolls and is released the first Friday of the month by the Bureau of Labor Statistics. In most cases, strong increases in employment signal that a country enjoys a prosperous economy, while decreases are a sign of potential contraction. If a country has gone recently through economic troubles, strong employment data could send the currency higher because it is a sign of economic health and recovery. On the other hand, high employment can also lead to inflation, so this data could send the currency downward. In other words, economic data and the movement of currency will often depend on the circumstances that exist when the data is released.

Interest Rates As was seen with some of the economic theories, interest rates are a major focus in the forex market. The most focus by market participants, in terms of interest rates, is placed on the country's central bank changes of its bank rate, which is used to adjust monetary supply and institute the country's monetary policy. In the U.S., the Federal Open Market Committee (FOMC) determines the bank rate, or the rate at which commercial banks can borrow and lend to the U.S. Treasury. The FOMC meets eight times a year to make decisions on whether to raise, lower or leave the bank rate the same; and each meeting, along with the minutes, is a point of focus. (For more on central banks read Get to Know the Major Central Banks.)

Inflation
Inflation data measures the increases and decreases of price levels over a period of time. Due to the sheer amount of goods and services within an economy, a basket of goods and services is used to measure changes in prices. Price increases are a sign of inflation, which suggests that the country will see its currency depreciate. In the U.S., inflation data is shown in the Consumer Price Index, which is released on a monthly basis by the Bureau of Labor Statistics.

Gross Domestic Product The gross domestic product of a country is a measure of all of the finished goods and services that a country generated during a given period. The GDP calculation is split into four categories: private consumption, government spending, business spending and total net exports. GDP is considered the best overall measure of the health of a country's economy, with GDP increases signaling economic growth. The healthier a country's economy is, the more attractive it is to foreign investors, which in turn can often lead to increases in the value of its currency, as money moves into the country. In the U.S., this data is released by the Bureau of Economic Analysis once a month in the third or fourth quarter of the month.

Retail Sales Retail sales data measures the amount of sales that retailers make during the period, reflecting consumer spending. The measure itself doesn't look at all stores, but, similar to GDP, uses a group of stores of varying types to get an idea of consumer spending. This measure also gives market participants an idea of the strength of the economy, where increased spending signals a strong economy. In the U.S., the Department of Commerce releases data on retail sales around the middle of the month.



Durable Goods The data for durable goods (those with a lifespan of more than three years) measures the amount of manufactured goods that are ordered, shipped and unfilled for the time period. These goods include such things as cars and appliances, giving economists an idea of the amount of individual spending on these longer-term goods, along with an idea of the health of the factory sector. This measure again gives market participants insight into the health of the economy, with data being released around the 26th of the month by the Department of Commerce.

Trade and Capital Flows
Interactions between countries create huge monetary flows that can have a substantial impact on the value of currencies. As was mentioned before, a country that imports far more than it exports could see its currency decline due to its need to sell its own currency to purchase the currency of the exporting nation. Furthermore, increased investments in a country can lead to substantial increases in the value of its currency.

Trade flow data looks at the difference between a country's imports and exports, with a trade deficit occurring when imports are greater than exports. In the U.S., the Commerce Department releases balance of trade data on a monthly basis, which shows the amount of goods and services that the U.S. exported and imported during the past month. Capital flow data looks at the difference in the amount of currency being brought in through investment and/or exports to currency being sold for foreign investments and/or imports. A country that is seeing a lot of foreign investment, where outsiders are purchasing domestic assets such as stocks or real estate, will generally have a capital flow surplus.

Balance of payments data is the combined total of a country's trade and capital flow over a period of time. The balance of payments is split into three categories: the current account, the capital account and the financial account. The current account looks at the flow of goods and services between countries. The capital account looks at the exchange of money between countries for the purpose of purchasing capital assets. The financial account looks at the monetary flow between countries for investment purposes.

Macroeconomic and Geopolitical Events The biggest changes in the forex often come from macroeconomic and geopolitical events such as wars, elections, monetary policy changes and financial crises. These events have the ability to change or reshape the country, including its fundamentals. For example, wars can put a huge economic strain on a country and greatly increase the volatility in a region, which could impact the value of its currency. It is important to keep up to date on these macroeconomic and geopolitical events.

There is so much data that is released in the forex market that it can be very difficult for the average individual to know which data to follow. Despite this, it is important to know what news releases will affect the currencies you trade. (For more insight, check out Trading On News Releases and Economic Indicators To Know.)

Now that you know a little more about what drives the market, we will look next at the two main trading strategies used by traders in the forex market – fundamental and technical analysis.

Forex Tutorial: Fundamental Analysis & Fundamentals Trading Strategies

In the equities market, fundamental analysis looks to measure a company's true value and to base investments upon this type of calculation. To some extent, the same is done in the retail forex market, where forex fundamental traders evaluate currencies, and their countries, like companies and use economic announcements to gain an idea of the currency's true value.

All of the news reports, economic data and political events that come out about a country are similar to news that comes out about a stock in that it is used by investors to gain an idea of value. This value changes over time due to many factors, including economic growth and financial strength. Fundamental traders look at all of this information to evaluate a country's currency.

Given that there are practically unlimited forex fundamentals trading strategies based on fundamental data, one could write a book on this subject. To give you a better idea of a tangible trading opportunity, let's go over one of the most well-known situations, the forex carry trade. (To read some frequently asked questions about currency trading, see Common Questions About Currency Trading.)

A Breakdown of the Forex Carry Trade The currency carry trade is a strategy in which a trader sells a currency that is offering lower interest rates and purchases a currency that offers a higher interest rate. In other words, you borrow at a low rate, and then lend at a higher rate. The trader using the strategy captures the difference between the two rates. When highly leveraging the trade, even a small difference between two rates can make the trade highly profitable. Along with capturing the rate difference, investors also will often see the value of the higher currency rise as money flows into the higher-yielding currency, which bids up its value.

Real-life examples of a yen carry trade can be found starting in 1999, when Japan decreased its interest rates to almost zero. Investors would capitalize upon these lower interest rates and borrow a large sum of Japanese yen. The borrowed yen is then converted into U.S. dollars, which are used to buy U.S. Treasury bonds with yields and coupons at around 4.5-5%. Since the Japanese interest rate was essentially zero, the investor would be paying next to nothing to borrow the Japanese yen and earn almost all the yield on his or her U.S. Treasury bonds. But with leverage, you can greatly increase the return.

For example, 10 times leverage would create a return of 30% on a 3% yield. If you have $1,000 in your account and have access to 10 times leverage, you will control $10,000. If you implement the currency carry trade from the example above, you will earn 3% per year. At the end of the year, your $10,000 investment would equal $10,300, or a $300 gain. Because you only invested $1,000 of your own money, your real return would be 30% ($300/$1,000). However this strategy only works if the currency pair's value remains unchanged or appreciates. Therefore, most forex carry traders look not only to earn the interest rate differential, but also capital appreciation. While we've greatly simplified this transaction, the key thing to remember here is that a small difference in interest rates can result in huge gains when leverage is applied. Most currency brokers require a minimum margin to earn interest for carry trades.

However, this transaction is complicated by changes to the exchange rate between the two countries. If the lower-yielding currency appreciates against the higher-yielding currency, the gain earned between the two yields could be eliminated. The major reason that this can happen is that the risks of the higher-yielding currency are too much for investors, so they choose to invest in the lower-yielding, safer currency. Because carry trades are longer term in nature, they are susceptible to a variety of changes over time, such as rising rates in the lower-yielding currency, which attracts more investors and can lead to currency appreciation, diminishing the returns of the carry trade. This makes the future direction of the currency pair just as important as the interest rate differential itself. (To read more about currency pairs, see Using Currency Correlations To Your Advantage, Making Sense Of The Euro/Swiss Franc Relationship and Forces Behind Exchange Rates.)



To clarify this further, imagine that the interest rate in the U.S. was 5%, while the same interest rate in Russia was 10%, providing a carry trade opportunity for traders to short the U.S. dollar and to long the Russian ruble. Assume the trader borrows $1,000 US at 5% for a year and converts it into Russian rubles at a rate of 25 USD/RUB (25,000 rubles), investing the proceeds for a year. Assuming no currency changes, the 25,000 rubles grows to 27,500 and, if converted back to U.S. dollars, will be worth $1,100 US. But because the trader borrowed $1,000 US at 5%, he or she owes $1,050 US, making the net proceeds of the trade only $50.

However, imagine that there was another crisis in Russia, such as the one that was seen in 1998 when the Russian government defaulted on its debt and there was large currency devaluation in Russia as market participants sold off their Russian currency positions. If, at the end of the year the exchange rate was 50 USD/RUB, your 27,500 rubles would now convert into only $550 US (27,500 RUB x 0.02 RUB/USD). Because the trader owes $1,050 US, he or she will have lost a significant percentage of the original investment on this carry trade because of the currency's fluctuation - even though the interest rates in Russia were higher than the U.S.

Another good example of forex fundamental analysis is based on commodity prices. (To read more about this, see Commodity Prices And Currency Movements.)

You should now have an idea of some of the basic economic and fundamental ideas that underlie the forex and impact the movement of currencies. The most important thing that should be taken away from this section is that currencies and countries, like companies, are constantly changing in value based on fundamental factors such as economic growth and interest rates. You should also, based on the economic theories mentioned above, have an idea how certain economic factors impact a country's currency. We will now move on to technical analysis, the other school of analysis that can be used to pick trades in the forex market.

Forex Tutorial: Technical Analysis & TechnicaI Indicators

One of the underlying tenets of technical analysis is that historical price action predicts future price action. Since the forex is a 24-hour market, there tends to be a large amount of data that can be used to gauge future price activity, thereby increasing the statistical significance of the forecast. This makes it the perfect market for traders that use technical tools, such as trends, charts and indicators. (To learn more, see Introduction to Technical Analysis and Charting Your Way To Better Returns.)

It is important to note that, in general, the interpretation of technical analysis remains the same regardless of the asset being monitored. There are literally hundreds of books dedicated to this field of study, but in this tutorial we will only touch on the basics of why technical analysis is such a popular tool in the forex market.

As the specific techniques of technical analysis are discussed in other tutorials, we will focus on the more forex-specific aspects of technical analysis.

Technical Analysis Discounts Everything; Especially in Forex
Minimal Rate Inconsistency
There are many large players in the forex market, such as hedge funds and large banks, that all have advanced computer systems to constantly monitor any inconsistencies between the different currency pairs. Given these programs, it is rare to see any major inconsistency last longer than a matter of seconds. Many traders turn to forex technical analysis because it presumes that all the factors that influence a price - economic, political, social and psychological - have already been factored into the current exchange rate by the market. With so many investors and so much money exchanging hands each day, the trend and flow of capital is what becomes important, rather than attempting to identify a mispriced rate.


Trend or Range
One of the greatest goals of technical traders in the FX market is to determine whether a given pair will trend in a certain direction, or if it will travel sideways and remain range-bound. The most common method to determine these characteristics is to draw trend lines that connect historical levels that have prevented a rate from heading higher or lower. These levels of support and resistance are used by technical traders to determine whether or not the given trend, or lack of trend, will continue.


Generally, the major currency pairs - such as the EUR/USD, USD/JPY, USD/CHF and GBP/USD - have shown the greatest characteristics of trend, while the currency pairs that have historically shown a higher probability of becoming range-bound have been the currency crosses (pairs not involving the U.S. dollar). The two charts below show the strong trending nature of USD/JPY in contrast to the range-bound nature of EUR/CHF. It is important for every trader to be aware of the characteristics of trend and range, because they will not only affect what pairs are traded, but also what type of strategy should be used. (To learn more about this subject, see Trading Trend Or Range?)
 


FXTutorialFigure1.gif
Graph created by E-Signal.
Figure 1
 

FXTutorialFigure2.gifGraph created by E-Signal. Figure 2
Common Indicators


Technical traders use many different indicators in combination with support and resistance to aid them in predicting the future direction of exchange rates. Again, learning how to interpret various forex technical indicators is a study unto itself and goes beyond the scope of this forex tutorial. If you wish to learn more about this subject, we suggest you read our technical analysis tutorial.

A few indicators that we feel we should mention, due to their popularity, are: Bollinger Bands®, Fibonacci retracement, moving averages, moving average convergence divergence (MACD) and stochastics. These technical tools are rarely used by themselves to generate signals, but rather in conjunction with other indicators and chart patterns.

Forex Tutorial: Currency Trading Summary

While this online forex tutorial only represents a fraction of all there is to know about forex trading, we hope that you've gained some insight into this topic. We also encourage those of you who are interested in potentially trading in the online forex market to learn more about the complexities and intricacies that make this market unique.

Let's recap:
  • The forex market represents the electronic over-the-counter markets where currencies are traded worldwide 24 hours a day, five and a half days a week. The typical means of trading forex are on the spot, futures and forwards markets.
  • Currencies are "priced" in currency pairs and are quoted either directly or indirectly.
  • Currencies typically have two prices: bid (the amount that the market will buy the quote currency for in relation to the base currency); and ask (the amount the market will sell one unit of the base currency for in relation to the quote currency). The bid price is always smaller than the ask price.
  • Unlike conventional equity and debt markets, forex investors have access to large amounts of leverage, which allows substantial positions to be taken without making a large initial investment.
  • The adoption and elimination of several global currency systems over time led to the formation of the present currency exchange system, in which most countries use some measure of floating exchange rates.
  • Governments, central banks, banks and other financial institutions, hedgers, and speculators are the main players in the forex market.
  • The main economic theories found in the foreign exchange deal with parity conditions such as those involving interest rates and inflation. Overall, a country's qualitative and quantitative factors are seen as large influences on its currency in the forex market.
  • Forex traders use fundamental analysis to view currencies and their countries like companies, thereby using economic announcements to gain an idea of the currency's true value.
  • Forex traders use technical analysis to look at currencies the same way they would any other asset and, therefore, use technical tools such as trends, charts and indicators in their trading strategies.
  • Unlike stock trades, forex trades have minimal commissions and related fees. But new forex traders should take a conservative approach and use orders, such as the take-profit or stop-loss, to minimize losses.

Forex Tutorial: Introduction to Currency Trading



Contributors include: Kathy Lien, Boris Schlossberg, Casey Murphy, Chad Langager and Albert Phung

The foreign exchange market (forex or FX for short) is one of the most exciting, fast-paced markets around. Until recently, forex trading in the currency market had been the domain of large financial institutions, corporations, central banks, hedge funds and extremely wealthy individuals. The emergence of the internet has changed all of this, and now it is possible for average investors to buy and sell currencies easily with the click of a mouse through online brokerage accounts.



Daily currency fluctuations are usually very small. Most currency pairs move less than one cent per day, representing a less than 1% change in the value of the currency. This makes foreign exchange one of the least volatile financial markets around. Therefore, many currency speculators rely on the availability of enormous leverage to increase the value of potential movements. In the retail forex market, leverage can be as much as 250:1. Higher leverage can be extremely risky, but because of round-the-clock trading and deep liquidity, foreign exchange brokers have been able to make high leverage an industry standard in order to make the movements meaningful for currency traders.

Extreme liquidity and the availability of high leverage have helped to spur the market's rapid growth and made it the ideal place for many traders. Positions can be opened and closed within minutes or can be held for months. Currency prices are based on objective considerations of supply and demand and cannot be manipulated easily because the size of the market does not allow even the largest players, such as central banks, to move prices at will.

The forex market provides plenty of opportunity for investors. However, in order to be successful, a currency trader has to understand the basics behind currency movements.

The goal of this forex tutorial is to provide a foundation for investors or traders who are new to the foreign currency markets. We'll cover the basics of exchange rates, the market's history and the key concepts you need to understand in order to be able to participate in this market. We'll also venture into how to start trading foreign currencies and the different types of strategies that can be employed.