How to Set Up the Keltner Channel
The Keltner channel is built around an average at a distance proportional to the average true range. Unlike Bollinger Bands it relies on range rather than standard deviation, and it behaves noticeably differently as a result.
Share of bars closing outside the channel
- Multiplier 1.5: 16.2% of bars
- Multiplier 2: 5.4% of bars
- Multiplier 3: 0.2% of bars
Measured over 518 daily bars for each of 12 currency pairs; medians across pairs are shown. The figures describe how often events occur, not profitability — those are different questions. The data is open and the calculation reproduces from a script in the repository.
Keltner channel settings: the multiplier decides
The dependence on the multiplier is even steeper than for Bollinger Bands. At a multiplier of 1.5 roughly a sixth of bars close outside the channel, at 2 around five percent, at 3 practically nothing — fractions of a percent. That last figure is especially telling: a multiplier of 3 turns the channel into a detector of exceptional events, of which a two-year sample contains a handful.
How it differs from Bollinger Bands
In the building material. Bollinger uses the standard deviation of closing prices; Keltner uses the average true range, which accounts for highs, lows and gaps. The practical consequence is that the Keltner channel is smoother and reacts less to sharp volatility spikes, because ATR is smoothed. Bollinger Bands widen faster and contract faster.
Where the difference matters
At moments of sharp regime change. After a strong day, Bollinger Bands widen immediately and the next signal requires a much larger move. The Keltner channel reacts more slowly and keeps producing signals. Which is better depends on the task: for filtering out false triggers after a spike, Bollinger is more convenient; for retaining sensitivity, Keltner is.
Practical choice
It makes sense to start with the standard multiplier of 2, which yields around five percent of exits — roughly one signal every three weeks on daily bars. A multiplier of 1.5 suits a channel used as a boundary of normal movement rather than as a trigger. A multiplier of 3 is practically unusable on a single instrument: there are too few events to learn anything about them.
This material is educational and is not individual investment advice. Trading forex carries the risk of losing capital.
Frequently asked questions
Which multiplier should I use for the Keltner channel?
The standard multiplier of 2 produces about 5% of exits — roughly one signal every three weeks on daily bars. A multiplier of 3 leaves fractions of a percent and is practically unusable on one instrument.
How does the Keltner channel differ from Bollinger Bands?
In construction: Keltner uses the average true range, Bollinger the standard deviation of closes. The Keltner channel is smoother and reacts more slowly to volatility spikes.
When is Keltner better than Bollinger?
After a sharp move Bollinger Bands widen quickly and suppress signals, while Keltner retains sensitivity. The choice depends on whether you want filtering after a spike or continued operation.
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