ATR — Average True Range
How to measure volatility and use ATR for signal filtering and risk management.
What is the ATR indicator?
Average True Range (ATR) is a technical analysis indicator that estimates the volatility of a financial instrument's price over a certain period of time, usually 14 periods.
ATR is calculated as the average value of true ranges over the period. It is a measure of volatility, not a direction indicator. A higher ATR indicates greater volatility, and vice versa.
How to use ATR in trading
Average True Range is a tool that may potentially help traders when creating a trading strategy across different directions and timeframes.
- Breakout Strategy: using an ATR-based trading strategy can be useful in combination with a breakout strategy. This means a trader can use the indicator to see when an asset is breaking out of low volatility, as this often precedes a sharp price movement.
- Momentum Trading: applying the average true range indicator can be informative when trading on momentum. ATR usually rises when an asset's price is likely to move faster than before, which can lead to momentum — both bullish and bearish.
On our platform, you can use the ATR indicator for analysis, as well as ATR%.
Advantages and Disadvantages
| Advantages | Disadvantages |
|---|---|
| The indicator's main advantage is its versatility. ATR is suitable for all markets and on all timeframes. Its task is simple — to determine current volatility. For a trader, this means that the tool helps to quickly understand how active the market is and whether strong movements can be expected. | Has a narrow application specialty. Does not show price direction, and is not a predictive tool. It only gives a sense of the current volatility level compared to previous periods. |
| Another plus is adaptability. ATR does not predict direction, but it clearly reacts to an increase or decrease in the amplitude of oscillations. | Lags — a feature of the formula. Volatility may start to grow, but the indicator's performance will still be low. Lag time — 1–2 candles. |
| In addition, ATR is very convenient for risk management. It helps set stop-losses and take-profits at an adequate distance from the current price, minimizing the risk of accidental order execution by market noise. | ATR, although belonging to the group of oscillators, is better used together with other indicators in the same category — Stochastic, MACD, etc. Also, short periods should not be set. |
Trading pairs with ATR
The interaction of ATR with other indicators is built on the principle of "Physics against Geometry". Most indicators (MA, RSI, Stochastic) are "geometry" (direction and position), while ATR is "physics" (medium resistance force and inertia).
Here are the main interaction scenarios for creating a complete trading system:
1. ATR + Moving Averages (Trend Following)
Moving Averages (MA) indicate direction, but they are "blind" to volatility.
- Problem: During strong volatility, price often makes deep "spikes" beyond the MA line, knocking traders out by stops even though the trend continues.
- Interaction: Use Keltner Channels (this is MA + ATR).
- Entry Signal: Price breaks the upper boundary of the channel (which is $2 × ATR$ away from the MA).
- Holding: While the price is between the MA and the upper boundary, you are in a deal.
- Result: ATR expands the boundaries of "allowed noise" around the trend.
2. ATR + RSI / Stochastic
Oscillators often give false oversold signals in a strong downward trend.
- Logic: If RSI enters an extreme zone (e.g., below 30), look at the ATR. If the ATR shows a sharp vertical takeoff at this point, this is the "climax of panic".
- Entry: This is an ideal moment for a counter-trend entry. High ATR confirms that the movement has become panic-driven and will soon exhaust itself.
- Stop Loss: Set behind the candle low at a distance of $1 × ATR$.
3. ATR + Bollinger Bands (Squeeze Play)
This is one of the most powerful interactions for predicting strong movements.
- Logic: Bollinger Bands use standard deviation, while ATR uses average true range.
- Interaction: When Bollinger Bands compress (low volatility) and the ATR falls to multi-month lows, this is called a Squeeze.
- Interpretation: This is a "calm before the storm" signal. The first price breakout from a narrow range with a rising ATR is a signal for strong momentum.
Interaction Summary Table
| Pair of Indicators | Interaction Type | Main Profit |
|---|---|---|
| ATR + MA | Dynamic filter | Does not knock out of the trend by random noise. |
| ATR + RSI | Exhaustion evaluation | Helps find a reversal point in panic. |
| ATR + ADX | Trend evaluation | Helps distinguish a true trend from a volatile range. |
Using ATR as an entry filter
Using ATR as an entry filter helps weed out trades during "market noise" or, conversely, when the move is already exhausted.
For filtering, the Ratio (relationship) of the current ATR to its average value over a longer period is usually used (e.g., ATR 14 to ATR 100) or to the asset price.
| ATR State | Quantitative Indicator (Ratio) | Recommendation | Rationale |
|---|---|---|---|
| Low Volatility | < 0.7 | Waiting / Accumulation | Market is "asleep". Move potential is great, but the explosion point is not yet defined. |
| Normal Volatility | 0.8 - 1.2 | Optimal entry | Healthy trend. Probability of false breakout is minimal. |
| Increased Volatility | 1.3 - 2.0 | Enter with caution | Strong move. Need to reduce position volume. |
| Extreme | > 2.0 | No entry | Market is overheated. High risk of reversal. |
How to set up the filter
- Squeeze Filter: If $ATR(14) < ATR(100)$ — the market is squeezed, momentum is expected.
- Percentage filter: $(ATR / Price) × 100$. If for stocks > 4–5% on the daily chart — entry is dangerous.
