AVERAGE DIRECTIONAL INDEX (ADX)

Summary

The Average Directional Index (ADX) is a technical analysis indicator that measures how strong a trend is in a stock's price movement, ranging from 0 to 100. Unlike other indicators that show direction (up or down), ADX only shows strength - whether the current trend (regardless of direction) is weak or strong. Values above 25 typically indicate a strong trend, while values below 20 suggest a weak or sideways market. It's calculated using the Directional Movement Index (+DI and -DI) and helps traders determine whether a market is trending strongly enough to use trend-following strategies.

Usage Context

Essential when learning technical analysis, trend identification strategies, and risk management. Particularly important for understanding when trend-following vs. range-trading strategies are appropriate in different market conditions.

Common Confusions

• Thinking ADX shows trend direction when it only shows trend strength
• Confusing ADX with +DI and -DI which are separate components
• Believing higher ADX values always mean better trading opportunities
• Using ADX in sideways markets where it's less effective
• Misunderstanding that ADX is a lagging indicator, not predictive