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Bollinger Band Width is (Upper Band - Lower Band) / Middle Band.
There is often a strong move after it falls to a low value then begins
to increase.
You didn't ask, but just for completeness, %B is (Close - Lower Band) /
Upper Band - Lower Band). Usually plotted as a histogram.
HHP
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Alexandros Spiroglou wrote:
>
> Does anyone know what the Bollinger Band Width index is and how it is used ?
>
> Warmest regards
> Alex Spiroglou
>
>
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