Bollinger Bands: Using Volatility As a Technical Indicator

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Bollinger Bands: Using Volatility As a Technical Indicator

Day traders use Bollinger Bands as a technical indicator to display a chart reading of volatility by how tight they are around a financial instrument. The degree of tightening or widening them surrounding the price action of a financial instrument determines the level of volatility. Chart facing, a 21-day moving average (preferred period of time) is surrounded by an upper and lower Bollinger Band.

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