ADX Trend Strength

ADX measures trend STRENGTH (how strong). +DI and -DI measure trend DIRECTION (which way). ADX tells you IF there's a tradeable trend; DIs tell you which direction to trade.

DI crossovers in low ADX environments (ADX < 20) are unreliable because there's no real trend. Always require ADX > 25 before trading DI crossovers for better results.

Start with the standard 14-period ADX. This works well across most stocks and timeframes. Only adjust after gaining experience with the default settings.

No! High ADX means strong trend, but it could be strongly UP or strongly DOWN. You need to check +DI vs -DI to know the direction. High ADX + (+DI > -DI) = strong uptrend. High ADX + (-DI > +DI) = strong downtrend.

This is a gray zone. A trend may be emerging. Watch for ADX to break above 25 with a clear DI separation. You can take smaller positions or wait for clearer signals.

Add ADX as a condition to your other signals. For example: 'Take MACD buy signal ONLY IF ADX > 25 AND +DI > -DI.' This filters out signals in ranging markets where they're more likely to fail.

It means the trend is losing strength, though it may still exist. This is a warning sign. Tighten stops, take partial profits, or prepare for consolidation. It doesn't mean immediate reversal, but be cautious.

Compare price highs/lows with ADX highs/lows. If price makes higher high but ADX makes lower high, that's bearish divergence (trend weakening). If price makes lower low but ADX makes higher low, that's bullish divergence (selling exhausting).

Not necessarily immediately, but be alert. If ADX falls below 25 and continues falling toward 20, the trend is definitely weakening. If ADX bounces and starts rising again, the trend may continue. Tighten stops when ADX falls.

ADX itself doesn't predict reversals, but ADX divergence and extreme readings can hint at them. Very high ADX (>40) with DI convergence can precede reversals. Always wait for DI crossover confirmation.

Use ADX to switch between strategy modes. ADX > 25: Use trend-following strategies. ADX < 20: Use mean reversion or range strategies. ADX 20-25: Reduce position size or stay in cash. This adapts to market conditions automatically.

ADX measures directional movement relative to total range (ATR). High volatility with direction = high ADX. High volatility without direction (choppy) = low ADX. ADX filters directional volatility from random volatility.

Calculate ADX for each sector ETF or index. Overweight sectors with ADX > 25 and favorable DI (bullish sectors). Underweight sectors with ADX < 20 or bearish DI. Rotate as sector ADX readings change.

High ADX (>25): Use directional options (calls if +DI > -DI, puts if -DI > +DI). Low ADX (<20): Use range-bound strategies (iron condors, butterflies). Avoid selling premium against strong trends (high ADX).

DI Differential = +DI minus -DI. Positive = bullish dominance. Negative = bearish dominance. Zero cross = directional shift. This single line can replace watching two separate DI lines. Combine with ADX > 25 filter.