ATR (Average True Range)
The Average True Range (ATR) measures market volatility by calculating the average of true ranges over a specified period, typically 14 bars. The true range is the greatest of: current high minus current low, absolute value of current high minus previous close, or absolute value of current low minus previous close.
How ATR Is Used in Trading
ATR is the gold standard for setting dynamic stop-loss levels. Rather than using fixed pip values, traders set stops at multiples of ATR (commonly 1.5x to 3x ATR). This automatically adjusts stop distances to current volatility, preventing premature stop-outs in volatile markets while keeping tight stops in calm ones.
Position sizing is another critical ATR application. By dividing risk capital by ATR, traders normalize position sizes across different instruments and market conditions. An instrument with high ATR gets a smaller position, while low-ATR instruments get larger positions, keeping risk consistent.
ATR breakout strategies use expanding ATR to confirm genuine breakouts. A breakout accompanied by increasing ATR is more likely to sustain than one occurring during contracting volatility. Many algorithmic systems use ATR as a volatility filter for entry signals.
Access via API
curl -H "X-API-Key: YOUR_API_KEY" \
"https://tickatlas.com/v1/indicator?symbol=XAUUSD&indicator=atr&timeframe=H4"Returns current ATR value for dynamic stop-loss and position sizing calculations.