Extended Bollinger Bands with Sample Deviation and Breakout Zones

Summary

This note presents an extended Bollinger Bands indicator. It describes the familiar construction around a simple moving average using a standard-deviation measure, and adds an option to calculate sample standard deviation instead of the usual version. It also introduces zones intended to flag when price is approaching a possible breakout area.

The author says the indicator can be used like regular Bollinger Bands. The document supplies no formulas for the zones, parameter guidance, chart examples, or performance evidence, so it does not establish how early the zones signal or whether they improve decisions. The description also leaves the breakout interpretation and the choice between deviation calculations to the user.

Key ideas

• The indicator is based on price bands around a simple moving average, scaled by standard deviation.
• Users can select a sample standard-deviation calculation.
• Additional zones are intended to warn that price may be entering a breakout area.
• The note provides no specific rules, examples, or evidence that the extension improves trading results.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.