Bollinger Band %b

Bollinger Bands show the volatility of a stock based on Standard Deviation around a Simple Moving Average. The related %b indicator shows the position of the Close Price relative to the bands. If the Close is at the Upper Band the %b indicator will be 100 and at the Lower Band the %b indicator will be 0. Values above 100 and below 0 are also possible.

Calculation

Bollinger Bands have 3 lines. The middle line is just the Simple Moving Average.

The Upper is calculated as SMA + (Standard Deviation * Number of Deviations).

The Lower is calculated as SMA - (Standard Deviation * Number of Deviations).

%b is calculated as ((Close - Lower) / (Upper - Lower)) * 100.

The default Period for the SMA and SD is 20 and the default Number of Deviations is 2.

Related Indicators

Bollinger Bands

Bollinger Band Width %

Custom Dates

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Symbol Id Name Exchange Close Price Trade Date
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AAPLAPPLE INC.3/28/2017Nasdaq GS143.80003/28/2017NGSM
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