Profiting From Interventions In Forex Markets

How would you like to make US$1,287 in 10 minutes? Well, if you had purchased a $100,000 lot of US dollar/Japanese yen on Dec 10, 2003 at 107.40 and sold 10 minutes later at 108.80, you could have!

1. Bought $100,000 and sold 10,740,000 yen (100,000*107.40)
2. Ten minutes later, the USD/JPY increases to 108.80
3. Sell $100,000 to buy 10,880,000 yen to realize a gain of 140,000 yen
4. In dollar terms, the gain would be 140,000/108.8 = $1,286.76 USD

So, who was on the other end of the trade taking the huge losses? Believe it or not, it was the central Bank of Japan! And why would they do this? The act is known as an intervention, but before we discover why they do it, let's quickly review the economics of the currency markets.

A Brief Economics Lesson
The entire foreign-exchange market (forex) revolves around currencies and their valuations relative to one another. These valuations play a large role in domestic and global economics. They determine many things, most notably the prices of imports and exports.

Valuation and the Central Banks
In order to understand why interventions occur, we must first establish how currencies are valuated. This can happen in two ways: by the market through supply and demand or by governments (ie: central banks). Subjecting a currency to valuation by the markets is known as floating the currency. Conversely, currency rates set by governments is known as fixing the currency, meaning a country’s currency is pegged to a major world currency (usually the U.S. dollar). Thus, in order for a central bank to maintain or stabilize the local exchange rate, it will implement monetary policy by adjusting interest rates or by buying and selling its own currency on the foreign-exchange market in return for the currency to which it is pegged, called intervention.

Instability and Intervention
Since currencies always trade in pairs (relative to one another), a significant movement in one directly impacts the other. When a country's currency becomes unstable for any reason (speculation, growing deficits, national tragedy, etc), other countries experience the aftereffect. Normally, this occurs over a long period of time, which allows for the market and/or central banks to effectively deal with any revaluation needs.

There becomes a problem, however, when there is a sudden and rapid and sustainable movement in a currency's valuation, which makes it impractical or even impossible for a central bank to immediately respond via interest rates, used to quickly correct the movement. These are times in which interventions take place.

Take the USD/JPY currency pair, for example. Between 2000 and 2003, the Bank of Japan intervened several times to keep the yen valued lower than the dollar as they were afraid of a increase in the value of the yen, making exports relatively more expensive than imports and hindering an economic recovery at that time. In 2001, Japan intervened and spent more than $28 billion to halt the yen from appreciating and in 2002, they spent a record $33 billion to keep the yen down.

Trading & Interventions
Interventions present an interesting opportunity for traders. If there is some significant negative catalyst (such as national debt or tragedy), this can indicate to traders that a currency they are targeting should be fundamentally valued lower. For example, the U.S. budget deficit caused the dollar to fall rapidly in relation to the yen, whose value, in turn, rose rapidly. In such circumstances, traders can speculate on the likelihood of an intervention, which would result in sharp price movements in the short term. This creates an opportunity for traders to profit handsomely by taking a position before the intervention and exiting the position after the effects of the intervention takes place. It is important to realize, however, that trading against a fast-moving trend (looking for an intervention) can be very risky and should be reserved for speculation traders.Furthermore, trading against a trend, especially when leveraged, can be extremely dangerous as large amounts of capital can be lost in short periods of time.

The Intervention
Now, let's take a look at what the intervention looks like on the charts:
Here we can see that between 2000 and 2003, the Bank of Japan intervened several times. Please note that there may have been more or less interventions than shown here since these interventions are not always made public. It is usually easy to spot them when they occur, however, because of the large short-term price movement, such as the one mentioned in the beginning of this article.

Knowing when interventions may occur is more of an art than a science; but, that doesn't mean there aren't clear indicators to help you. Here are some basic principles to follow:

1. Interventions usually occur around the same price level as previous interventions. In the case of the USD/JPY, this level was 115.00 – notice in the chart above that the interventions pushed the value of the dollar above that point for quite some time. But keep in mind that this may not always be true; interventions may cease if the central bank deems it unnecessary (i.e. too costly). This is also apparent where we see the value drop below 115.00.
2. Sometimes there are verbal clues prior to interventions. Japan’s former finance minister Kiichi Miyazawa was infamous for threatening to intervene on multiple occasions. Similarly, the European Union has given clues as to their possible intervention in the future. Sometimes these words alone are enough to move the markets. Keep in mind, however, that the more often traders hear these threats with no action, the less impact these threats will have on the market.
3. Analysts also often give good estimates of intervention levels. Keep an eye on foreign exchange analysts from popular banks and investment firms for a good idea of when to expect them.

Knowing these can help you determine when an intervention is likely to occur. Here is some advice for trading when an intervention is occurring:

1. Gauge the expected price levels by locating previous intervention movements. Again, we can see that most of the major interventions in the USD/JPY pair amounted to 125.00 or so, before resuming a downward course again.
2. Always keep a stop-loss point and a take-profit point to lock in gains, and limit losses. Make sure to set your stop-loss at a reasonable level, but leave enough room for the downside before an intervention occurs. Take-profit points should be set at levels previously attained by interventions.
3. Use as little margin as possible. Although this lowers you potential profit, it also reduces the risk of getting a margin call. And, since you are trading against the long-term trend, margin calls become a significant risk if an intervention doesn't occur during the time you plan.

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