Keltner Channels
KC · module 26 of 33 · volatility
An EMA with channel lines placed a multiple of ATR above and below.
- EMA 20
- +2 ATR
- −2 ATR
- ▲/▼ where the rule triggers
An ATR envelope around an EMA. Closes outside the channel signal unusual strength in that direction.
How to apply it
- 1. Add it. Start with EMA 20, ATR 10, ×2 on 15m (Intraday).
- 2. Read the market first. Closes outside the channel indicate a move larger than recent true range — genuine breakout evidence.
- 3. Adjust for ranges. Channel edges act as stretch markers, similar to Bollinger Bands but smoother.
- 4. Manage the trade. Place the stop at 1.5 × ATR and the target at 3.5 × ATR, and only act when the chart above shows the trigger.
How it is calculated
Middle = EMA(20); Upper/Lower = Middle ± (m × ATR(10)), m usually 2.
Inputs
- · EMA period (20)
- · ATR period (10)
- · Multiplier (2)
Reading it correctly
In a trend
Closes outside the channel indicate a move larger than recent true range — genuine breakout evidence.
In a range
Channel edges act as stretch markers, similar to Bollinger Bands but smoother.
Settings by style
| Style | Suggested values |
|---|---|
| Intraday | EMA 20, ATR 10, ×2 on 15m |
| Swing | EMA 20, ATR 10, ×2 on 4h |
These are conventional starting points, not optimised values. Test any change on your own pair and timeframe before relying on it.
Worked example
EMA(20) = 1.0880 and ATR(10) = 0.0012: upper 1.0904, lower 1.0856. A close at 1.0908 exceeds two average true ranges above the mean — the standard Keltner breakout reading.
When it failed
On 5m USD/CHF during a news spike, ATR was still calculated from the pre-news quiet period, so the channel was far too narrow and price closed outside it on eight consecutive candles. Each 'breakout' was part of one spike and retracement.
Limitations
- ATR is backward-looking, so the channel is too narrow immediately after a volatility jump.
- Two periods plus a multiplier to choose.
- Very similar to Bollinger Bands — running both is duplication.
Works well alongside
- · ADX / DMI
- · Donchian Channels
Redundant with
- · Bollinger Bands
- · SuperTrend
- · Standard deviation channels
Stacking these produces agreement by construction, which is not confirmation.
Practice exercise
Plot Bollinger(20,2) and Keltner(20,10,2) together on 15m EUR/USD. Note where Bollinger sits inside Keltner — the classic squeeze condition — and what followed.
Check your understanding
1. Keltner channel width is based on:
- · Standard deviation
- ✓ ATR
- · Volume
- · RSI
The channel is placed a multiple of ATR from an EMA.
2. Bollinger Bands sitting inside Keltner Channels is known as:
- · A divergence
- ✓ A squeeze
- · Embedding
- · A golden cross
It indicates that standard deviation has compressed below average true range — a low-volatility condition.