Moving Average Convergence Divergence (MACD)

14
Jan

Forex Trading Floors blog on “How to Trade” this week is covering Moving Average Convergence Divergence.

MACD is an acronym for Moving Average Convergence Divergence. This tool is used to identify moving averages that are indicating a new trend, whether it's bullish or bearish. After all, our top priority in trading is being able to find a trend, because that is where the most money is made.

With an MACD chart, you will usually see three numbers that are used for its settings.

• The first is the number of periods that is used to calculate the faster moving average.
• The second is the number of periods that is used in the slower moving average.
• And the third is the number of bars that is used to calculate the moving average of the difference between the faster and slower moving averages.

For example, if you were to see "12, 26, 9" as the MACD parameters (which is usually the default setting for most charting packages), this is how you would interpret it:

• The 12 represents the previous 12 bars of the faster moving average.
• The 26 represents the previous 26 bars of the slower moving average.
• The 9 represents the previous 9 bars of the difference between the two moving averages. This is plotted by vertical lines called a histogram (the green lines in the chart above).

There is a common misconception when it comes to the lines of the MACD. The two lines that are drawn are NOT moving averages of the price. Instead, they are the moving averages of the DIFFERENCE between two moving averages.

In our example above, the faster moving average is the moving average of the difference between the 12 and 26-period moving averages. The slower moving average plots the average of the previous MACD line. Once again, from our example above, this would be a 9-period moving average.
This means that we are taking the average of the last 9 periods of the faster MACD line and plotting it as our slower moving average. This smoothens out the original line even more, which gives us a more accurate line.

The histogram simply plots the difference between the fast and slow moving average. If you look at our original chart, you can see that, as the two moving averages separate, the histogram gets bigger.
This is called divergence because the faster moving average is "diverging" or moving away from the slower moving average.

As the moving averages get closer to each other, the histogram gets smaller. This is called convergence because the faster moving average is "converging" or getting closer to the slower moving average.

And that, my friend, is how you get the name, Moving Average Convergence Divergence!
Ok, so now you know what MACD does. Now we'll show you what MACD can do for YOU.

Next week on “How to Trade” Forex Trading Floors will cover “How to Trade using MACD.
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