Bollinger Bands width Technical Analysis & Bollinger Bands width Signals
Developed & Created by John Bollinger.
This technical indicator is derived from the original and initial Bollinger technical indicator.
Bandwidth is a measure of width of Bollinger Band
Calculation
Bandwidth = Upper Band - Lower Band
Middle Band

This is an oscillator technical indicator, based on the theory that price and volatility occurs in cycles.
Periods of high volatility is followed by periods of low volatility.
When volatility is high, bands are far apart, the band-width also will be wide apart.
When volatility is low, Bands are narrow and the band-width trading technical indicator also will be narrow.
The blue line represents the highest Bandwidth value reading for a previous number of periods.
This line also identifies the periods of high volatility
The red-line represents the lowest Band-width value reading for a previous number of specified periods.
This line also identifies periods of low market volatility
FX Technical Analysis and How to Generate Trading Signals
Consolidation - Bollinger Squeeze
Bollinger Bandwidth is used to identify the squeeze, which's a consolidation period of price, after which the price then breaks-out in a given direction.
The Signals are derived & generated when there is a price break out - signal is derived and generated by the indicator beginning to go upwards after touching the red line. When the bandwidth line starts and begins to move upwards it signals that market volatility is rising as the price is breaking-out.

Squeeze

Breakout Signal After Bandwidth Squeeze
However, this is a directionless technical indicator & needs to be combined together with another technical indicator such as the MA(Moving Average) to figure out & determine the direction of the trend/ Breakout.
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