MEDIOR · TECHNISCHE ANALYSE

MACD (Moving Average Convergence Divergence)

Signal line, histogram, and regime shifts. Learn interpretation, not magic.

Leer de MACD-indicator: crossovers, histogram en trendsignalen.

What MACD Is Built From

MACD is constructed from two exponential moving averages (EMAs). The standard settings are 12-period and 26-period EMAs:

MACD Line = EMA(12) - EMA(26) Signal Line = EMA(9) of the MACD Line Histogram = MACD Line - Signal Line

When the shorter EMA is above the longer EMA, the MACD line is positive - suggesting bullish momentum. When below, bearish momentum.

The Three Components

  • MACD Line: The difference between the fast and slow EMAs. Represents the current momentum direction and strength.
  • Signal Line: A smoothed version of the MACD line. Acts as a trigger for crossover signals.
  • Histogram: The visual difference between the MACD line and signal line. When the histogram is expanding, momentum is accelerating. When contracting, momentum is decelerating.

Crossovers: Late Confirmation

The most popular MACD signal is the crossover:

  • Bullish crossover: MACD line crosses above the signal line.
  • Bearish crossover: MACD line crosses below the signal line.
Critical limitation: Crossovers are lagging signals. By the time the MACD crosses, a significant portion of the move has already happened. In fast reversals, crossovers arrive too late to be useful. In choppy markets, they generate constant false signals (whipsaws).

Crossovers work best in trending markets with sustained moves. In ranges, they are unreliable.

The Histogram as Momentum Slope

The histogram is often more useful than the crossover itself. Think of it as the "slope" of momentum:

  • Histogram expanding (growing bars): Momentum is accelerating in the current direction.
  • Histogram contracting (shrinking bars): Momentum is decelerating - the trend may be losing steam.
  • Histogram flipping (positive to negative or vice versa): Momentum has shifted direction.

Watching the histogram contract before a crossover can give you an earlier warning than waiting for the crossover itself.

Regime Shifts

A regime shift occurs when the market transitions from one state to another - trending to ranging, bullish to bearish, low volatility to high volatility. MACD can help identify these transitions:

  • When the MACD line crosses the zero line (not just the signal line), it suggests a more significant shift in the underlying trend.
  • A histogram flip combined with a price structure break (e.g., breaking a key support level) is a stronger signal than either alone.

MACD Divergence

Like RSI, MACD can show divergence - price makes a new high but MACD makes a lower high (or vice versa). The same warnings apply:

  • Divergence is a warning of weakening momentum, not a guaranteed reversal.
  • In strong trends, divergence can persist for a long time.
  • Always combine divergence with price structure confirmation.

When MACD Fails

  • Choppy/ranging markets: Constant crossovers, all false signals.
  • Fast V-reversals: MACD is too slow to catch the turn.
  • Low-volatility drift: Price creeps slowly in one direction; MACD stays flat and uninformative.

No indicator works in all conditions. Knowing when MACD is not useful is as important as knowing when it is.

Practice

Exercise 1

Find a trending market and identify where MACD crossovers would have been profitable entries. Then find a ranging market and count how many false crossover signals occurred.

Exercise 2

Explain in one paragraph why MACD crossovers lag on fast reversals. What is the mechanical reason?

Key Takeaways

  • MACD is built from moving averages - it is inherently lagging.
  • Crossovers are late confirmations, not early predictions.
  • The histogram shows momentum acceleration/deceleration - often more useful than crossovers.
  • Zero-line crosses suggest more significant trend shifts.
  • MACD fails in choppy markets - know when to ignore it.

Wat is MACD?

De MACD (Moving Average Convergence Divergence) is een trendindicator die de relatie tussen twee voortschrijdende gemiddelden toont.

  • MACD-lijn: 12-periode EMA minus 26-periode EMA.
  • Signaallijn: 9-periode EMA van de MACD-lijn.
  • Histogram: Het verschil tussen MACD en signaallijn.

MACD-signalen

  • Bullish crossover: MACD kruist boven de signaallijn → koopsignaal.
  • Bearish crossover: MACD kruist onder de signaallijn → verkoopsignaal.
  • Histogram groeit: Momentum neemt toe.
  • Histogram krimpt: Momentum neemt af.

Belangrijkste punten

  • MACD combineert trend en momentum in één indicator.
  • Crossovers zijn de primaire signalen.
  • Het histogram toont de kracht van het momentum.
  • MACD werkt het best in trending markten, niet in ranges.

Les afgerond

Je hebt afgerond: MACD.