Getting to Grips with the Most Volatile Currency Pairs
Reading time: 10 minutes
This article explores the topic of Forex currency volatility as a whole, discussing what is volatility? What are the highest volatility currency pairs? how volatility affects trading in general, how to measure volatility with indicators such as the Average True Range (ATR), currency fluctuations, and more!
The uncertainty that sprung from the surprise result of the Brexit vote back in 2016 sent shockwaves through the global financial markets. Consequently, The summer of 2016 was a volatile time for the Forex market. The most notable moves were in Forex (FX) pairs containing sterling (GBP). The immediate aftershocks of the Brexit referendum have faded somewhat now (although currency pairs that include GBP are still affected greatly by news developments, and announcements regarding the Brexit negotiations).
There are many other factors that also affect the FX markets. Speculation on the timing of further FED (Federal Reserve Bank) rate hikes and long-term fears of economic weakness have grown more in more recent years, which has fuelled uncertainty. And more often than not - uncertainty is a close companion to volatility. But before we start, we need to be clear on what volatility is, how we will classify volatile currency pairs, and how to adjust volatility protection settings.
What is volatility?
When we discuss volatility, we are discussing how much a price moves over a certain period of time. In short, a more volatile market will move more frequently over a given time-frame, compared with a less volatile one. Now when we say that, we are talking about price movements, and that can be one of two things:
Both have their uses:
- The proportionate measure is more useful for comparative purposes generally
- When we are specifically looking at currencies, it can be useful to talk in absolute terms
After all, traders may simply want to know typical pip movement for a certain period. And for the purposes of the following comparison, let's use this route. We'll simply look at how many pips each currency moves.
Measuring the Volatility Index & the Forex ATR Indicator
There are different ways to measure volatility, but one of the best-known indicators for this purpose is the Average True Range (ATR). The ATR indicator was developed by J. Welles Wilder (along with a collection of other well-known methods), in his book New concepts in technical trading. Wilder was a commodity trader and ATR was originally designed for commodity markets.
In the commodity market, there is normally a stretch of time between the market closing and reopening. It is not unusual to see commodity prices 'gapping' upon opening. Gapping refers to opening at a different level to the close of the previous day. This is less of an issue with the FX market, because currencies trade 24 hours a day during the week.
Nevertheless, it may be applicable when the FX market re-opens after closing for the weekend. A gapping market poses a problem to the most simplistic way of gauging volatility: which is looking at the range between the high and low for a certain period.
So what is the problem if the previous close was outside that range?
Well, if we focus purely on the high-low range, we are ignoring a certain amount of movement when the market gaps upon opening. True range is a measure that accounts for this circumstance, and is the largest of the following:
- High of current period minus low of current period
- High of current period minus close of previous period
- Low of current period minus close of previous period.
Note that true range is always a positive value. We ignore the minus sign if we get a negative value from the calculations (see above). But why do we do this? Where volatility is concerned, we are only interested in the magnitude of change - not its direction. Once we have our values for true range, we use them to derive ATR.
ATR is an Exponential Moving Average (EMA) of true range. The good news is: ATR comes as a standard indicator with MetaTrader 4. Traders may also benefit from using the MetaTrader 4 Supreme Edition plugin, which provides the ability to list highly volatile currency pairs, and also comes with several other handy indicators that complement ATR.
Highest volatility currency pairs:
Here are some examples of the most volatile currency pairs from late August to early September 2016:
Here's a 4-hour price chart of the GBP/NZD currency pair, with the ATR plotted beneath it:
Source: MetaTrader 4 Supreme Edition Plugin - GBPNZD Forex Volatility Chart - Data Range: 16 Aug, 2016 - 13 Sep, 2016
Let's compare it with the EURCHF currency pair, which was arguably among the least volatile currency pairs during this time period:
Source: MetaTrader 4 Supreme Edition Plugin - EUR/CHF Forex Volatility Chart - Data Range: 18 Aug, 2016 - 15 Sep, 2016
The ATR for the same period shows that:
- EUR/CHF did not get higher than 21 pips
- GBP/NZD did not go lower than 54 pips
So from the examples provided, can see that GBP/NZD moved a lot more than EUR/CHF. These are the criteria used:
- 20-period ATR was used as the volatility measure
- A four week period was used
- The 27 most commonly-traded pairs
What's So Important About Currency Volatility?
Like many technical measures, ATR is measures something that occurred in the past. It is performed in order to make an educated guess about what may be likely for the market in future. Such probabilistic thinking is usually at the heart of good trading.
It is advisable that traders:
- Do not try to make specific predictions about the future
- Attempt to gauge the overall probabilities of success for strategies in the long run
Naturally, you are probably now wondering if there is a way to forewarn yourself about likely times of higher volatility. Yes, there is. One tool that traders use, is the Forex Calendar. By watching how volatility rises when certain reports come out, traders can get a feel for what kind of data releases tend to be market movers. For example, the US Bureau of Labor Statistics usually releases employment data on the first Friday of each month.
The data is extremely timely and historically well correlated with economic growth. As a result, it has often sparked sharp movements for a variety of markets like FX. But that's just part of the story: because there may be patterns of volatility throughout the trading week. You may want to study this yourself to see how volatility ebbs and flows. If so, why not read our guide on the best days per week to trade Forex? and learn more!
Other Ways Volatility Affects Trading
There's varied ways that you can use volatility to guide your trading decisions. For example, you can use your volatility measure to try and normalise the level of risk you take with each trade. This involves adjusting your trading size, so that it's appropriate in relation to the market's volatility.
In other words:
- The more volatile a pair, the smaller your contract size
- The less volatile a pair, the larger your contract size.
This move attempts to reduce the impact of volatility on your trading. But why would you want to do this?
Well, imagine you are using the same strategy across multiple FX pairs. It stands to reason that your chance of winning or losing, is the same for each position you have, right? After all, a winning strategy should provide you with overall profit over the long term.
Such a result, will generate a sequence of losing and winning trades. But here's the thing: the balance of these results is everything. It's vital that no losing trades dwarf your winning trades. This could happen if a loss occurs on a more volatile currency pair, when you haven't adjusted your size accordingly. The usefulness of volatility doesn't stop there - it can also help you to choose a market that best suits your trading style.
If you are a long-term trend follower, you are probably going to want to trade a less volatile currency. Why? Because volatile markets make it hard to hold on to a long-term trend. Whipsawing prices will ensure that there are times when at least some of your profit will evaporate.
And let's face it, that can be hard on a trader's psychology. On the other hand, if you are a swing trader then you probably want more volatile pairs. Let's take a look at a quick example of increasing volatility. We mentioned Brexit earlier, because it was an example of extreme market volatility. Let's consider trading over that period:
Source: MetaTrader 4 Supreme Edition - EURUSD Forex Volatility Chart - Data Range: 12 May, 2016 - 4 Aug, 2016
The image above shows a daily chart of the EUR/USD currency pair, which includes the 10-day ATR plotted beneath it. Though it wasn't in the top tier of our list of high volatility currency pairs, you can still see how volatile the FX pair was during this period. The long red candle in the middle is for 24 June 2016, when the market reacted to the outcome of the Brexit vote.
Now obviously such a sharp move pushed the ATR up to very high levels, and because the ATR is an average, this kept the ATR high for some time after. However, notice how the ATR was rising even before the Brexit vote? The volatility actually started rising at the beginning of June. The sub-100 pip daily ranges seen in mid-May, swelled in just a few weeks.
On 3 June 2016, the day's range was 220 pips. The opportunity for making profit and losses increased accordingly. Consider 24 June 2016, if you were short on the EUR/USD currency pair, the increase in volatility would have meant that your profit would have leapt by over 500 pips.
A Final Word On Volatility
Any complete strategy will include rules for:
- Which markets to trade
- When to trade specific markets
- Position sizing
- Risk management
Knowledge of a market's volatility can help to inform your decision on all of the four points above - so it's important. As we discussed earlier in the article, measuring volatility is dependent on the time-frame you are focussing on. Which time-frame yields the most useful information will likely depend on what type of trader you are. You will be able to work out what works best for you through a process of trial and error, that's best served via a Demo trading account. We hope that this discussion of the most volatile currency pairs will help you to add another dimension to your trading.
This material does not contain and should not be construed as containing investment advice, investment recommendations, an offer of or solicitation for any transactions in financial instruments. Please note that such trading analysis is not a reliable indicator for any current or future performance, as circumstances may change over time. Before making any investment decisions, you should seek advice from independent financial advisors to ensure you understand the risks.