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Bollinger Bands MT4 Stock Indexes Indicator and Bollinger Bands Indices Trading Signals

Developed by John Bollinger

Bollinger bands are formed by three lines. The middle line is a Moving Average - 20 period Simple Moving Average.

The bands are then drawn at a distance away from the moving average These are the bands that form the lower and upper lines.

The distance where the bands are drawn is determined by another MT4 Indices Indicator called the standard deviation. Standard deviation is a measure of volatility in the Indices Trading market or that of indices.

Since the indices market volatility keeps on changing, the standard deviation will keep varying, and since Bollinger bands are drawn using the standard deviation the distance of the bands will keep on adjusting themselves to the stock indexes trading market conditions.

When the stock indexes trading markets become more volatile, the bands widen and they contract during less volatile periods.

The 3 Bands are designed to encompass the majority of a indices price action. The middle band forms the basis for the trend, typically a 20-periods simple moving average.

This band also serves as the base for the upper and lower bands. The upper band's and lower band's distance from the middle band is determined by volatility. The upper band is drawn at +2 standard deviations above the middle band while the lower band is drawn at -2 standard deviations below the middle band.

Bollinger Bands MT4 Indices Indicator

MT4 Indices Technical Indicator and Generating Indices Trading Signals

  • Bands provide a relative definition of high and low

  • Used to identify periods of high and low volatility

  • Used to identify periods when indices prices are at extreme levels


The bands tighten as volatility lessens, this identifies periods of consolidation. Sharp stock indexes price break-outs tend to occur after the bands tighten.

Indices Trading Consolidation

Consolidation Pattern


Continuation Signal

If indices prices break through the upper or lower band move outside the bands a continuation of the current indices trend is expected.

Bollinger Bands Bulge

Reversal Indices Trading Signals

Bottoms and tops made outside the bands followed by bottoms and tops made inside the bands call for reversals in the trend

Reversal Indices Trading Signals

The Head Fake- Whipsaw

Traders should be on the lookout for false breakouts known as whipsaws or head fakes.

Indices Price often breaks out in one direction immediately following the Squeeze causing many traders to think the breakout will continue in that direction, only to quickly reverse and make the true, more significant breakout in the opposite direction.

Traders acting quickly on the initial breakout often get caught on the wrong side of the stock indexes price action, while those traders expecting a "false breakout" can quickly close out their original position and enter a trade in the direction of the reversal. It is always good to combine Bollinger bands with other confirmation MT4 Stock Indexes Indicators.


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