Average Directional Index (ADX) in Forex
A clear definition of Average Directional Index (ADX), with practical context for reading markets and making better trading decisions.
Definition
The Average Directional Index (ADX) is a technical indicator developed by J. Welles Wilder to measure the strength of a trend, not its direction.
Strength, Not Direction
A high ADX can occur during either an uptrend or a downtrend. A low ADX suggests weak directional movement or a market that may be ranging. That distinction is important: ADX answers “how strongly is price trending?” rather than “which way is price trending?”
Common Reference Levels
Many traders use readings around 20–25 as a rough dividing area between weak and more established trend conditions. These are conventions, not universal rules, and the reading should be interpreted with timeframe and market context.
Key Takeaway
ADX is a trend-strength filter. Direction must still come from price structure or directional components, not from the ADX value alone.
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Why Average Directional Index (ADX) matters
Understanding Average Directional Index (ADX) helps traders interpret market information, plan decisions, and manage risk with more context.
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