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Bollinger Bands Wide & Narrow

* Bollinger Bands Wide & Narrow apply a Simple Moving Average (SMA) on Bollinger Bands Width with same period of middle bands to regconize the bands are widening or narrowing.
* "Bands Widening" is marked by green shade.
* "Bands Narrowing" is marked by red shade.
Bollinger Bands (BB)Moving AveragesVolatility

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