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What is MACD? The moving average convergence divergence indicator

By SendPay Business · · 2 min read

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MACD, short for moving average convergence divergence, is a chart indicator developed by Gerald Appel in the late 1970s. It compares a fast and a slow moving average to show how a price's momentum is changing.

The three parts

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MACD line

the 12-period exponential moving average (EMA) minus the 26-period EMA.

Signal line

a 9-period EMA of the MACD line.

Histogram

the MACD line minus the signal line, drawn as bars.

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Reading it

When the MACD line is above zero, the fast average is above the slow one, which usually means prices have been rising. The histogram grows when the gap between MACD and its signal line widens and shrinks as they converge, which is where the name comes from.

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Crossovers

Some chart readers watch for the MACD line crossing above or below its signal line, or crossing zero. Because both lines are built from moving averages, these crossings come after the price has already turned.

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The limits

MACD lags the price and can give many false signals in a sideways market. It has no fixed top or bottom, so readings can't be compared directly between markets with very different prices.

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Questions people ask

How do I work out MACD?

Paste closing prices into the free calculator.

MACD calculator →
What is a moving average?

Simple and exponential averages explained.

Moving averages →
What is RSI?

Another momentum indicator, on a 0 to 100 scale.

What is RSI? →

Read next

Spotted a mistake or something out of date? and we'll fix it. How our guides are made

This guide is general information, not legal or financial advice. SendPay Business is a technology company, not a bank, and does not take deposits; regulated services on the platforms are provided by licensed partners. Other companies named in this guide are reference points only and are not affiliated with SendPay Business.