Bollinger Bands

Technical Indicators - Bollinger Bands

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Bollinger bands

Charting and Historical Backtesting Software by Ashkon Technology LLC


Bollinger Bands Interpretation:

Stock prices tend to stay within the upper and lower band.
Sharp price changes tend to occur after the bands tighten.
When prices move outside the bands, a continuation of the current trend will continue.
Bottoms and tops made outside the bands are usually followed by bottoms and tops made inside the bands.
A move that originates at one band tends to go all the way to the other band.

Bollinger Bands Calculation:

Parameters: D - standard deviation, n - number of days 





where MA is a simple moving average

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