Chart Duels

ATR Explained: Average True Range

A measure of volatility: the average size of the daily price range, including gaps between sessions. Another of Wilder's 1978 indicators. It says nothing about direction.

How it's calculated

True range = the largest of: today's high − low, |today's high − yesterday's close|, |today's low − yesterday's close|. ATR is the 14-session average of the true range (Wilder's smoothing).

How traders use it

Mainly to size positions and set stops: for example, placing a stop 2 ATR from the entry, or using less leverage when ATR is high. A rising ATR warns that the market is getting more nervous.

What people say

Traders value it precisely because it isn't a signal. It answers “how much could this move against me?”, which matters a lot with leverage: in this game, a ×3 position is liquidated after a move of about a third of the price.

Practise with this indicator

Open a real hidden-stock chart with only this indicator turned on and see if it helps you beat the market.

Skip the crap and play →

Sources

  1. Average true range — Wikipedia
  2. Macroption: New Concepts in Technical Trading Systems (Wilder, 1978)