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9.6 Kirshenbaum Bands

Kirshenbaum bands are channel lines drawn around an exponential moving average (see Exponential Moving Average). The channel width is a multiple of the “standard error” from a linear regression of a past N days (see Linear Regression, and the EMA is smoothed using the same N days.

Kirshenbaum bands are similar to Bollinger bands (see Bollinger Bands), but with a linear regression standard error (stderr) instead of a standard deviation (stddev, see Standard Deviation). The difference is that stddev takes no account of a trend, so the Bollinger channel widens when a trend is in progress. But stderr is based on deviation from a fitted sloping line, so if prices are making steady progress up or down the channel width remains small.

The standard error values (ie. the channel width) can be viewed directly as an indicator too as “Linear Regression Stderr” (see Linear Regression).


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