Bollinger bands are a volatility indicator, utilized by merchants to determine areas of help and resistance and areas by which an asset may be experiencing elevated or decreased volatility. Bollinger bands are calculated from three traces drawn onto a value chart.
The primary is the easy transferring common (SMA) of an asset’s value over a given interval – normally 20 days. The higher band is the SMA plus two customary deviations which have been multiplied by two, whereas the decrease band is the SMA minus two customary deviations which have been multiplied by two.
The precise methodology for calculating the completely different Bollinger bands is as follows:
- The higher band = 20-day SMA + (20-day customary deviation multiplied by 2)
- The decrease band = 20-day SMA – (20-day customary deviation multiplied by 2)
- The SMA is calculated by including up the closing costs in a set interval and dividing that quantity by the entire variety of durations
Many merchants use Bollinger bands to point areas of market volatility – and so they assume that the extra the bands deviate from the SMA, the extra unstable the underlying market. In distinction, if the bands are slim then many merchants take this to indicate that the underlying market value is steady.
When the bands widen, merchants confer with it as a Bollinger bounce and consider that it’s indicative of an upcoming retracement. Narrowing bands are generally known as a Bollinger squeeze and that is taken to point an upcoming breakout within the underlying asset.
Bollinger bands are a lagging indicator, which some take into account to be a disadvantage. Because of this they search to verify traits fairly than predict future market actions. Indicators which search to foretell future market actions are generally known as main indicators, and these embrace the relative energy index (RSI) or the stochastic oscillator.
Nonetheless, lagging indicators similar to Bollinger bands can be utilized to verify a pattern earlier than getting into a place, though that is most successfully executed together with different technical indicators. Because of this a dealer may miss out on the beginning of a pattern, however they nonetheless stand to revenue as soon as they’ve used a lagging indicator, or a group of lagging indicators, to verify the pattern.
If you happen to don’t love the usual Bollinger Bands, you possibly can attempt the Unique Bollinger.
Unique Bollinger for MetaTrader 4 : https://www.mql5.com/en/market/product/24336
Unique Bollinger for MetaTrader 5 : https://www.mql5.com/en/market/product/25318