An indicator that shows the strength and shifts of momentum. Here is what MACD is made of, what the line, signal and histogram mean, and why it works best on breakouts.
The difference between two EMAs (12 and 26) plus its smoothed version, the signal line (9 EMA).
Histogram
The gap between MACD and the signal. Growing — momentum is building; shrinking — fading.
Strength
Confirms breakouts and shifts in momentum, catches the start of a trend well.
Weak spot
Lags and gives many false crosses in a range.
What it's made of
MACD (Moving Average Convergence Divergence) has three parts:
The MACD line — the difference between the fast 12 EMA and the slow 26 EMA. Above zero, the fast average is above the slow one and momentum points up.
The signal line — a 9 EMA of the MACD line. It smooths it and gives the crossover points.
The histogram — the difference between the MACD line and the signal line. It shows whether momentum is accelerating or slowing.
Why it works
In essence, MACD shows how fast the short and long averages are pulling apart. When price starts a strong move, the fast EMA breaks away from the slow one, the MACD line moves away from zero and the histogram grows. When the move runs out of steam, the averages converge and the histogram shrinks even before price turns.
MACD on breakouts
MACD works best as breakout confirmation. Price breaks a trendline or a level and at the same time the histogram flips sign — so there's a real shift in momentum behind the breakout, not a random poke.
Price broke the rising line and MACD momentum turned down — the breakout is confirmed. Illustrative data.
How to use it
01
Mark the level or line
MACD doesn't give an entry by itself — it confirms what you see on the chart.
02
Wait for a breakout with a close
The candle has to close beyond the level.
03
Check momentum
The histogram flipped sign or the MACD line crossed the signal in the direction of the breakout.
04
Watch for shrinking bars
When the histogram bars get smaller, momentum is fading — time to tighten the stop or take partial profit.
In a range the MACD lines keep crossing near zero. Trading every cross is the same as trading every moving average cross in a sideways market.
Common mistakes
Entering on every line cross
Without a level and a trend, crosses are noise. Use them as confirmation, not as a signal.
Ignoring the position relative to zero
An upward cross below zero is weaker than one above zero: in the second case momentum is already on the buyers' side.
Expecting MACD to call the exact turn
The indicator is built on averages and always lags a little.
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