AVERAGE TRUE RANGE (ATR)
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A technical analysis indicator that measures market volatility using a moving average of true ranges.
Summary
Average True Range (ATR) is a technical indicator that helps traders measure how much a stock or other asset's price typically moves up and down during a given period. Think of it as a 'volatility thermometer' - higher ATR values indicate the price is moving a lot (high volatility), while lower values suggest the price is relatively stable (low volatility). ATR calculates the average of 'true ranges' over a specified number of periods, where true range is the largest of three measurements: today's high minus today's low, today's high minus yesterday's close, or yesterday's close minus today's low. This indicator is particularly useful for setting stop-loss levels and position sizing.
Usage Context
Understanding ATR is crucial when learning risk management, position sizing strategies, and volatility-based trading systems. It's particularly important in modules covering technical analysis, stop-loss placement, and portfolio management.
Common Confusions
- Thinking ATR predicts price direction rather than just measuring volatility
- Confusing ATR with price momentum indicators
- Not understanding that ATR is always positive and measures magnitude, not direction
- Assuming higher ATR always means better trading opportunities
- Mixing up ATR with average trading range or daily range