MACD

Identify trend direction, momentum shifts, and potential reversals using the relationship between two exponential moving averages.

What is MACD?

MACD (Moving Average Convergence Divergence) is a trend-following momentum indicator that shows the relationship between two exponential moving averages of price. The standard configuration uses a 12-period EMA and a 26-period EMA. The MACD line is calculated by subtracting the 26 EMA from the 12 EMA, and a 9-period EMA of the MACD line (the signal line) is then plotted on top to act as a trigger for buy and sell signals.

The histogram — the bar chart displayed between the MACD and signal lines — represents the difference between the two. When the histogram is growing, momentum is accelerating in that direction. When it starts to shrink, momentum is fading even if price is still moving.

MACD is displayed as a sub-chart indicator below the main price chart. It is one of the most widely used technical indicators across all markets, effective for identifying trend changes, momentum shifts, and divergences that signal potential reversals.

Key Concepts

• MACD Line: The difference between the 12-period EMA and 26-period EMA — when it moves above zero, the short-term trend is outpacing the long-term trend (bullish)
• Signal Line: A 9-period EMA of the MACD line — acts as a smoothed trigger line for crossover signals
• Histogram: The visual representation of the gap between the MACD line and signal line — growing bars mean increasing momentum, shrinking bars mean fading momentum
• Zero Line: When the MACD line crosses above zero, the 12 EMA has crossed above the 26 EMA — a classic bullish signal (and vice versa)
• Divergence: When price makes a new high but MACD does not (bearish divergence), or price makes a new low but MACD does not (bullish divergence) — one of the most powerful reversal signals in technical analysis

How to Use MACD

1. Open Chart from the sidebar and navigate to the indicator settings
2. Enable the MACD indicator — it will appear as a sub-chart below the main price chart
3. Watch for MACD line and signal line crossovers to identify momentum shifts
4. Monitor the histogram for early signs of momentum acceleration or deceleration
5. Compare MACD peaks and troughs with price action to spot divergences

What to Look For

• Bullish signals: MACD line crossing above the signal line indicates upward momentum is building — this is stronger when it happens below the zero line, as it suggests a shift from bearish to bullish territory. The histogram turning from negative to positive confirms the crossover.
• Bearish signals: MACD line crossing below the signal line suggests momentum is shifting to the downside — particularly significant when it occurs above the zero line. A histogram that was growing positive but starts shrinking warns that bullish momentum is fading before the actual crossover.
• Key patterns: Divergence is the highest-conviction MACD signal. When price prints a higher high but the MACD makes a lower high, bearish divergence warns that the uptrend is losing steam. When price makes a lower low but MACD makes a higher low, bullish divergence suggests selling pressure is exhausting. Zero line crosses (MACD moving from negative to positive territory or vice versa) confirm broader trend shifts.
• Combine with: RSI to confirm overbought/oversold conditions alongside momentum shifts, Open Interest to see whether new positions are backing the momentum change, volume indicators to validate that the trend shift has participation behind it

Supported Exchanges

Tips

• MACD works best in trending markets — in sideways, choppy conditions it will produce frequent false crossovers that lead to whipsaws
• The histogram often provides the earliest warning of a momentum shift — watch for it to start shrinking before waiting for the full crossover
• Divergence signals are more reliable on higher timeframes (4H, daily) — on lower timeframes they can resolve without a reversal
• Avoid using MACD in isolation — it is a lagging indicator by nature, so pair it with price action or leading indicators for confirmation