Question 1

Why size stops with ATR instead of a fixed percent?

Accepted Answer

A fixed 2% stop ignores how volatile the asset actually is. In a calm market it is too wide; in a violent one it gets hit by noise. ATR measures the asset’s real recent range, so an ATR-based stop adapts — wide when volatility is high, tight when it is low — and your position size shrinks or grows to keep dollar risk constant.

Question 2

What ATR multiplier should I use?

Accepted Answer

Common choices are 1.5× to 3× ATR. Tighter multipliers (1.5×) suit trending, low-noise conditions; wider ones (3×) give a swing trade room to breathe. Backtest on your asset and timeframe — too tight and you get stopped by normal wiggles, too wide and your position size becomes tiny.

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