ADX in gold trading
ADX, the Average Directional Index, measures trend strength from 0 to 100 regardless of direction; +DI and -DI show whether buyers or sellers dominate gold.
Also called Average Directional Index, DMI, +DI, -DI, Directional Movement Index
ADX (Average Directional Index) is J. Welles Wilder’s measure of trend strength. It is plotted with two companion lines, +DI and -DI, which together form the Directional Movement Index (DMI). The default period is 14. ADX rises when a trend strengthens in either direction and falls when the market is ranging.
How it applies to gold trading
ADX answers a question most indicators ignore: is gold trending at all? A common reading is that ADX below about 20 suggests a range, above 25 a trend. Traders use it to choose a playbook: breakout and trend-following setups when ADX is rising above 25, mean-reversion setups when it is low and falling.
Direction comes from the DI lines. +DI above -DI means upward pressure dominates; -DI above +DI downward. A DI cross with a rising ADX is a classic trend entry signal.
Worked example
Example (hypothetical numbers): on the 4-hour chart ADX(14) rises from 18 to 31 over two days while +DI stays above -DI and gold climbs from 3,980 to 4,060. A trader switches from range fades to buying pullbacks. A week later ADX turns down from 42 while price stalls near 4,100, a sign the trend is maturing.
A common mistake
Reading a high ADX as bullish. ADX measures strength only; a strong downtrend also produces a high ADX.
See also: Trend following, Consolidation and range, ATR, Moving average.
Frequently asked questions
What ADX level means gold is trending?
Readings above about 25 are commonly read as a trend and below about 20 as a range. Treat these as guides, not hard rules.
What is the difference between ADX and DMI?
DMI refers to the +DI and -DI lines that show direction. ADX is derived from them and shows trend strength without direction.
Which ADX period is best for gold?
Fourteen is the standard. Shorter periods react faster with more noise; longer ones are smoother but lag.