vendredi 27 avril 2007

Introduction to the Forex Market


The Foreign Exchange market, also referred to as the "Forex" or "FX" market is the largest financial market in the world, with a daily average turnover of US$1.9 trillion.

"Foreign Exchange" is the simultaneous buying of one currency and selling of another. Currencies are traded in pairs, for example Euro/US Dollar (EUR/USD) or US Dollar/Japanese Yen (USD/JPY).

There are two reasons to buy and sell currencies. About 5% of daily turnover is from companies and governments that buy or sell products and services in a foreign country or must convert profits made in foreign currencies into their domestic currency. The other 95% is trading for profit, or speculation.

For speculators, we believe the best trading opportunities are with the most commonly traded (and therefore most liquid) currencies, called "the Majors." Today, more than 85% of all daily transactions involve trading of the Majors, which include the US Dollar, Japanese Yen, Euro, British Pound, Swiss Franc, Canadian Dollar and Australian Dollar.

A true 24-hour market from Sunday 5:00 PM ET to Friday 5:00PM ET, Forex trading begins each day in Sydney, and moves around the globe as the business day begins in each financial center, first to Tokyo, London, and New York. Unlike any other financial market, investors can respond to currency fluctuations caused by economic, social and political events at the time they occur - day or night.

The FX market is considered an Over The Counter (OTC) or 'interbank/interdealer' market, due to the fact that transactions are conducted between two counterparts over the telephone or via an electronic network. Trading is not centralized on an exchange, as with the stock and futures markets.

Trend-friendly Tools


The obvious starting point for this discussion is to define what is meant by a trend. In terms of technical analysis, a trend is a predictable price response at levels of support/resistance that change over time. For example, in an uptrend the defining feature is that prices rebound when they near support levels, ultimately establishing new highs. In a downtrend, the opposite is true – price increases will reverse as they near resistance levels, and new lows will be reached. This definition reveals the first of the tools used to identify whether a trend is in place or not – trendline analysis to establish support and resistance levels.

Trendline analysis is sometimes underestimated because it is perceived as overly subjective in nature. While this criticism has some truth, it overlooks the reality that trendlines help focus attention on the underlying price pattern, filtering out the noise of the market. For this reason, trendline analysis should be the first step in determining the existence of a trend. If trendline analysis does not reveal a discernible trend, it's probably because there isn't one. Trendline analysis will also help identify price formations that have their own predictive significance.

Trendline analysis is best employed starting with longer time frames (daily and weekly charts) first and then carrying them forward into shorter timeframes (hourly and 4-hourly) where shorter-term levels of support and resistance can then be identified. This approach has the advantage of highlighting the most significant levels of support/resistance first and minor levels next. This helps reduce the chances of following a short-term trendline break while a major long-term level is lurking nearby.

A more objective indicator of whether a market is trending is the directional movement indicator system (DMI). Using the DMI removes the guesswork involved with spotting trends and can also provide confirmation of trends identified by trendline analysis. The DMI system is comprised of the ADX (average directional movement index) and the DI+ and DI- lines. The ADX is used to determine whether or not a market is trending (regardless if it's up or down), with a reading over 25 indicating a trending market and a reading below 20 indicating no trend. The ADX is also a measure of the strength of a trend – the higher the ADX, the stronger the trend. Using the ADX, traders can determine whether or not there is a trend and thus whether or not to use a trend following system.

As its name would suggest, the DMI system is best employed using both components. The DI+ and DI- lines are used as trade entry signals. A buy signal is generated when the DI+ line crosses up through the DI- line; a sell signal is generated when the DI- line crosses up through the DI+ line. (Wilder suggests using the "extreme point rule" to govern the DI+/DI- crossover signal. The rule states that when the DI+/- lines cross, traders should note the extreme point for that period in the direction of the crossover (the high if DI+ crosses up over DI-; the low if DI- crosses up over DI+). Only if that extreme point is breached in the subsequent period is a trade signal confirmed.

The ADX can then be used as an early indicator of the end/pause in a trend. When the ADX begins to move lower from its highest level, the trend is either pausing or ending, signaling it is time to exit the current position and wait for a fresh signal from the DI+/DI- crossover.

The Trend/No Trend Paradox

To make matters worse, many traders typically utilize only one or two technical indicators to identify market direction and trade-timing. This one-size-fits-all approach leaves them exposed to the trend/no-trend paradox – an indicator that works well in trending markets can give disastrous results in sideways markets and vice versa. As a result, individual traders frequently find themselves exiting positions too early and missing out on larger moves as a bigger trend unfolds. Conversely, traders may end up holding onto a short-term position for too long following a reversal, believing they are "with the trend," when no trend exists.

To avoid getting caught in the paradox, this article will suggest using several technical tools in conjunction to determine whether or not a trend is in place. This will in turn dictate which technical indicators are best used to gauge entry/exit points as well as provide some risk management guidance. Rather than setting forth a list of concrete trading rules, this article seeks to outline a dynamic approach to the use of technical analysis to avoid getting caught in the trend/no-trend paradox.

Which Technical Indicators to Use?


If "the trend is your friend," what happens when there is no trend? This is more than just a rhetorical question, since markets tend to move sideways much more frequently than they trend. For example, currency markets are particularly well known for long-term trends, which are in turn caused by long-term macro-economic trends, such as interest rate tightening or easing cycles. But even in currency markets, historical analysis reveals that trending periods only account for about 1/3 of price action over time, meaning that about two-thirds of the time there is no trend to catch.

By Brian Dolan
As published in TRADERS' Magazine July 2005

Translating Rising Oil Prices to Currency Trading Opportunities


Equity investors already know that higher oil prices negatively impact the stock prices of companies that are highly dependent on oil such as airlines, since more expensive oil means higher expenses and lower profits for those companies.

In much the same way, a country's dependency on oil determines how its currency will be impacted by a change in oil prices. The US's massive foreign dependence on oil makes the US dollar more sensitive to oil prices than other countries. Therefore, any sharp increase in oil prices is typically dollar-negative.

If you believe the price of oil will continue to increase for the near term, you could express that viewpoint in the currency markets by once again favoring commodity-based economies like Australia and Canada or selling other energy-dependent countries like Japan.

How Rising Gold Prices Affect Currencies


It's not hard to understand why we've experienced a run-up in gold prices lately. In the US, we're dealing with the threat of inflation and a lot of geo-political tension. Historically, gold is a country-neutral alternative to the U.S. dollar. So given the inverse relationship between gold and the U.S. Dollar, currency traders can take advantage of volatility in gold prices in innovative ways.

For example, if gold breaks an important price level, one would expect gold to move higher in coming periods. With this in mind, forex traders would look to sell dollars and buy Euros, for example, as a proxy for higher gold prices. Moreover, higher gold prices frequently have a positive impact on the currencies of major gold producers. For example, Australia is the world's third largest exporter of gold, and Canada is the world's third largest producer of gold. Therefore, if you believe the price of gold will continue to rise you could establish long positions in Australian Dollar or the Canadian Dollar - or even position to be long those currencies against other major countries like the UK or Japan.

How Interest Rate Increases Drive Currency Prices


A common way to think about U.S. interest rates is how much it's going to cost to borrow money, whether for our mortgages or how much we'll earn on our bond and money market investments. Currency traders think bigger. Interest rate policy is actually a key driver of currency prices and typically a strategy for new currency traders.

Fundamentally, if a country raises its interest rates, the currency of that country will strengthen because the higher interest rates attract more foreign investors. When foreign investors invest in U.S. treasuries, they must sell their own currency and buy U.S. Dollars in order to purchase the bonds. If you believe U.S. interest rates will continue to rise, you could express that view by going long U.S. Dollars.

If you believe that the Fed has finished raising rates for the time being, you could capitalize on that view by buying a currency with a higher interest rate, or at least the prospect of relatively higher rates. For example, U.S. rates may be higher than those of Euroland now but the prospect of higher rates in Euroland, albeit still lower than the U.S., may drive investors to purchase Euros.

Understanding Forex Quotes


Reading a foreign exchange quote may seem a bit confusing at first. However, it's really quite simple if you remember two things: 1) The first currency listed first is the base currency and 2) the value of the base currency is always 1.

The US dollar is the centerpiece of the Forex market and is normally considered the 'base' currency for quotes. In the "Majors", this includes USD/JPY, USD/CHF and USD/CAD. For these currencies and many others, quotes are expressed as a unit of $1 USD per the second currency quoted in the pair. For example, a quote of USD/JPY 110.01 means that one U.S. dollar is equal to 110.01 Japanese yen.


When the U.S. dollar is the base unit and a currency quote goes up, it means the dollar has appreciated in value and the other currency has weakened. If the USD/JPY quote we previously mentioned increases to 113.01, the dollar is stronger because it will now buy more yen than before.

The three exceptions to this rule are the British pound (GBP), the Australian dollar (AUD) and the Euro (EUR). In these cases, you might see a quote such as GBP/USD 1.7366, meaning that one British pound equals 1.7366 U.S. dollars.

In these three currency pairs, where the U.S. dollar is not the base rate, a rising quote means a weakening dollar, as it now takes more U.S. dollars to equal one pound, euro or Australian dollar.

In other words, if a currency quote goes higher, that increases the value of the base currency. A lower quote means the base currency is weakening.

Currency pairs that do not involve the U.S. dollar are called cross currencies, but the premise is the same. For example, a quote of EUR/JPY 127.95 signifies that one Euro is equal to 127.95 Japanese yen.

When trading forex you will often see a two-sided quote, consisting of a 'bid' and 'ask':

The 'bid' is the price at which you can sell the base currency (at the same time buying the counter currency).
The 'ask' is the price at which you can buy the base currency (at the same time selling the counter currency).