Bollinger Bands® are utilised by technical traders in all financial markets including forex. This article will introduce Bollinger Bands® and how they assist traders in technical analysis. It will also provide an overview of top strategies and tips for trading forex with Bollinger Bands® – including trading the trend and the Bollinger squeeze.
What are Bollinger Bands® and how to do they work?
Bollinger Bands® are a versatile technical analysis indicator widely used among traders. John Bollinger first developed this indicator as a solution to find relative highs and lows in dynamic markets. The indicator itself is comprised of an upper band, lower band and moving average line.
The two trading bands are placed two standard deviations above and below the moving average (usually 20 periods). Using two standard deviations estimates that 95% of price data will be contained within the two bands.
As a rule of thumb, prices are deemed overbought on the upside when they touch the upper band and oversold on the downside when the reach the lower band.
As price oscillates between the indicators upper and lower extremes Bollinger Bands® become an excellent tool to gauge volatility. When bands contract there is less volatility in the market, which is a great indication to use a range bound strategy. Likewise, Bollinger Bands® will expand as the market becomes more volatile. At these times traders may employ a breakout or a trend-based strategy.
How to trade Forex with Bollinger Bands®
There are several different techniques involved in using Bollinger Bands® to trade the forex markets. The most popular are:
2) Bollinger Squeeze: Applying the volatility indications of the bands
1) Trading the trend
EUR/USD weekly chart
The chart above shows the EUR/USD chart in an uptrend – depicted by higher highs and higher lows. Using the Bollinger Band® indicator, the lower band is seen as a gauge of support. When price touches the lower band, traders use this as a signal to enter a long (buy) trade. This strategy works for both uptrends and downtrends. Take profit (limit) levels are generally taken from the upper and lower bands depending on trend. In this example, the upper band will be used as the take profit level.
In summary, trading the trend with Bollinger Bands® is relatively simple:
- Identify the trend
- Use upper and lower bands in conjunction with price movement to identify entry points
- Use respective upper and lower band as target levels
2) Trading the Bollinger Band® Squeeze
EUR/USD weekly chart:
As mentioned previously, when the bands contract volatility is low and vice versa. The Bollinger squeeze looks for breakouts above/below the band depending on trend to be used as entry signs.
Highlighted in green shows these breakouts in an uptrend. Traders will look to enter and close out at the indicated red arrows. After each entry, it can be seen that the candles are ‘walking the Bollinger‘ (following the upper band). After the breakout candle the bands expand implying greater volatility in the market.
The red arrows illustrate the point at which the lower band starts contracting once more. This turn from expansion to contraction identifies the take profit level. In an uptrend trader’s will use the lower band ‘turn’ as an exit point, whilst a downtrend uses the upper band junction as its closing signal.
To summarise, when trading the Bollinger Band® squeeze:
- Look for low volatility (contracting bands)
- Wait for breakout of upper/lower band
- Close trade when relevant band stops expanding
Further reading on trading Bollinger Bands® and forex
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