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Bollinger Bands

A Bollinger Band®, developed by famous technical trader John Bollinger, is plotted two standard deviations away from a simple moving average.

[/vc_column_text][vc_row_inner][vc_column_inner width=”1/3″][TS-VCSC-Lightbox-Image content_image=”647″][/vc_column_inner][vc_column_inner width=”2/3″][vc_column_text css_animation=”fadeIn”]Bollinger Bands consist of a middle band with two outer bands. The middle band is a simple moving average that is usually set at 20 periods. A simple moving average is used because the standard deviation formula also uses a simple moving average. The look-back period for the standard deviation is the same as for the simple moving average. The outer bands are usually set 2 standard deviations above and below the middle band.[/vc_column_text][vc_raw_html]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[/vc_raw_html][/vc_column_inner][/vc_row_inner][vc_column_text css_animation=”fadeInLeft”]Settings can be adjusted to suit the characteristics of particular securities or trading styles. Bollinger recommends making small incremental adjustments to the standard deviation multiplier. Changing the number of periods for the moving average also affects the number of periods used to calculate the standard deviation. Therefore, only small adjustments are required for the standard deviation multiplier. An increase in the moving average period would automatically increase the number of periods used to calculate the standard deviation and would also warrant an increase in the standard deviation multiplier. With a 20-day SMA and 20-day Standard Deviation, the standard deviation multiplier is set at 2. Bollinger suggests increasing the standard deviation multiplier to 2.1 for a 50-period SMA and decreasing the standard deviation multiplier to 1.9 for a 10-period SMA.[/vc_column_text][vc_column_text css_animation=”fadeInLeft”]Bollinger Bands reflect direction with the 20-period SMA and volatility with the upper/lower bands. As such, they can be used to determine if prices are relatively high or low. According to Bollinger, the bands should contain 88-89% of price action, which makes a move outside the bands significant. Technically, prices are relatively high when above the upper band and relatively low when below the lower band. However, relatively high should not be regarded as bearish or as a sell signal. Likewise, relatively low should not be considered bullish or as a buy signal. Prices are high or low for a reason. As with other indicators, Bollinger Bands are not meant to be used as a stand-alone tool. Chartists should combine Bollinger Bands with basic trend analysis and other indicators for confirmation.[/vc_column_text][vc_raw_html]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[/vc_raw_html][/vc_column][/vc_row]