Suppose you're packing for a trip and want to know how much to bring. You ask: "On a typical day at the destination, how warm or cold does it usually get?" You don't care about the freak heatwave or the once-a-decade snowstorm. You want the normal range.

ATR, short for Average True Range, asks the same question about price. On a normal day, how big is the market's movement? Once you know that, you know how much room your trade needs.

What "True Range" means

Each candle's "true range" is the largest of three numbers:

  1. Today's high minus today's low.
  2. Today's high minus yesterday's close.
  3. Yesterday's close minus today's low.

Why bother with yesterday's close? Because markets gap. If gold closed at $2,000 and opened at $1,980, today's low-to-high might look small, but the real move from yesterday is $20. The "true range" captures gaps that the bare high-low would miss.

ATR is just the average of true range over the last 14 candles. One number that says "this is the typical daily swing right now".

Reading ATR

An ATR of $20 on a gold daily chart means: on an average day, gold moves about $20 between its day's extremes. That single number tells you:

  • How wide your stop should be. Setting a $5 stop when ATR is $20 means a random day's noise will probably hit it. Setting a $40 stop in the same regime gives the trade room to breathe.
  • Whether volatility is rising or falling. ATR climbing from $20 to $35 means the market just woke up. Falling from $35 to $15 means it's going to sleep.
  • How big a "real" move is. A $10 move when ATR is $20 is barely a half-day's normal action. A $50 move is 2.5 ATRs — a genuinely significant push.

ATR-based stops (Momentum Stop)

The most useful trick: instead of picking a stop in dollars, pick it in ATR multiples. "Stop = entry minus 1.5 × ATR" gives you a stop that automatically widens in volatile markets and tightens in calm ones. Your trade always has the same statistical room to live.

Traders call this style of trailing stop a momentum stop because it follows momentum's natural breath without arbitrary fixed amounts.

ATR doesn't tell you which way to bet. It tells you how much room to give your bet. Position-sizing without ATR is guessing with extra steps.

For a gold watcher

Pull up daily gold with a 14-period ATR overlay. Note the current value. Now mentally check every trade idea against it: is my stop at least 1× ATR away? Is my target at least 2× ATR? If not, the trade math is fighting normal market noise. Either tighten the entry or skip the trade.