MACD-Histogram

Search ChartSchool

Introduction

Developed by Thomas Aspray in 1986, the MACD-Histogram measures the distance between MACD and its signal line (the 9-day EMA of MACD). Like MACD, the MACD-Histogram is also an oscillator that fluctuates above and below the zero line. Aspray developed the MACD-Histogram to anticipate signal line crossovers in MACD. Because MACD uses moving averages and moving averages lag price, signal line crossovers can come late and affect the reward-to-risk ratio of a trade. Bullish or bearish divergences in the MACD-Histogram can alert chartists to an imminent signal line crossover in MACD. See our ChartSchool article for more on MACD.

Calculation

MACD: (12-day EMA - 26-day EMA) 

Signal Line: 9-day EMA of MACD

MACD Histogram: MACD - Signal Line

Standard MACD is the 12-day Exponential Moving Average (EMA) less the 26-day EMA. Closing prices are used to form the moving averages so MACD. A 9-day EMA of MACD is plotted along side to act as a signal line to identify turns in the indicator. The MACD-Histogram represents the difference between MACD and its 9-day EMA, the signal line. The histogram is positive when MACD is above its 9-day EMA and negative when MACD is below its 9-day EMA.

Four Steps Removed

The MACD-Histogram is an indicator of an indicator. In fact, MACD is also an indicator of an indicator. This means that the MACD-Histogram is four steps removed from the price of the underlying security. In other words, it is the fourth derivative of price.

• First derivative: 12-day EMA and 26-day EMA
• Second derivative: MACD (12-day EMA less the 26-day EMA)
• Third derivative: MACD signal line (9-day EMA of MACD)
• Fourth derivative: MACD-Histogram (MACD less MACD signal line)

The base for this indicator is the security's price. It takes four steps to get from the actual price to the MACD-Histogram. Talk about massaging the data. While not necessarily a bad thing, chartists should keep this in mind when analyzing the MACD-Histogram. It is an indicator of an indicator. Therefore, it is designed to anticipate signals in MACD, which in turn is designed to identify changes in the price momentum of the underlying security.

Interpretation

As with MACD, the MACD-Histogram is also designed to identify convergence, divergence and crossovers. The MACD-Histogram, however, is measuring the distance between MACD and its signal line. The histogram is positive when MACD is above its signal line. Positive values increase as MACD diverges further from its signal line (to the upside). Positive values decrease as MACD and its signal line converge. The MACD-Histogram crosses the zero line as MACD crosses below its signal line. The indicator is negative when MACD is below its signal line. Negative values increase as MACD diverges further from its signal line (to the downside). Conversely, negative values decrease as MACD converges on its signal line.

Chart 1 shows Darden Restaurants (DRI) with MACD and the MACD-Histogram. A bearish signal line crossover occurred in late September and this turned the MACD-Histogram negative. A bullish signal line crossover occurred in early December and this turned the MACD-Histogram positive the rest of the month. There was a period of divergence as MACD moved further from its signal line (green line) and a period of convergence as MACD moved closer to its signal line (red line).

Peak-Trough Divergence

The MACD-Histogram anticipates signal line crossovers in MACD by forming bullish and bearish divergences. These divergences signal that MACD is converging on its signal line and could be ripe for a cross. There are two types of divergences: peak-trough and slant. A peak-trough divergence forms with two peaks or two troughs in the MACD-Histogram. A peak-trough bullish divergence forms when MACD forges a lower low and the MACD-Histogram forges a higher low. Well-defined troughs are important to the robustness of a peak-trough divergence. Chart 2 shows Caterpillar with a bullish divergence in the MACD-Histogram. Notice that MACD moved to a lower low in June-July, but the MACD-Histogram formed a higher low (trough). There are two distinct troughs. This bullish divergence foreshadowed the bullish signal line crossover in mid-July and a big rally.

Chart 3 shows Aeropostale (ARO) with a bearish divergence in August-September 2009. MACD moved to a new high in September, but the MACD-Histogram formed a lower high. Notice that there are two definitive peaks (higher) with a dip in between on the MACD-Histogram (red line). The subsequent bearish signal line crossover foreshadowed a sharp decline in the stock.

Slant Divergence

As its name implies, slant divergences form without well-defined peaks or troughs. Instead of two reaction highs, there is simply a slant lower as the MACD-Histogram moves towards the zero line. This slant towards the zero line reflects a convergence between MACD and its signal line. In other words, they are getting closer to each other. Momentum shows strength when MACD is moving away from its signal line and the MACD-Histogram expands. Momentum weakens as MACD moves closer to its signal line and the MACD-Histogram contracts. Contracting MACD-Histogram is the first step towards a signal line crossover.
Chart 4 shows Boeing with a classic slant divergence in the MACD-Histogram. MACD moved sharply lower after the bearish signal line crossover in June 2009. MACD moved to a new low in mid-July, but the MACD-Histogram held well above its prior low. In fact, the MACD-Histogram bottomed towards the end of June and formed a bullish slant divergence. The thick red lines show the distance between MACD and its signal line. It is sometimes hard to gauge distance on the chart so these lines highlight the difference between 26-June and 8-July. This slant divergence foreshadowed the bullish signal line crossover in mid-July and a sharp advance in the stock.

Chart 5 shows Disney (DIS) with a bearish slant divergence in May 2008. Notice how MACD continued to a new high on 16-May, but the MACD-Histogram peaked on 8-May and formed a slant divergence. The advance in MACD was losing momentum and the indicator moved below its signal line to foreshadow a sharp decline in the stock. This chart also shows a nice bullish divergence in March-April.

Conclusions

The MACD-Histogram is an indicator designed to predict signal line crossovers in MACD. By extension, it is designed as an early warning system for these signal line crossovers, which are the most frequent of MACD signals. Divergences in the MACD-Histogram can be used to filter signal line crossovers, which will reduce the number of signals. Even with a filter, the robustness of MACD-Histogram divergences is still an issue. Short and shallow divergences are much more frequent than long and large divergences. In other words, divergences that develop over a few days with shallow movements are generally less robust than divergences that develop over a few weeks with more pronounced movements. The signal line crossover provides the ultimate confirmation, but aggressive traders may try to improve the reward-to-risk ratio by making their move just before the crossover. This is when the MACD-Histogram is as close to the zero line as it can be without actually making a cross, usually between -.20 and +.20.

Using with SharpCharts

MACD comes with the MACD-Histogram, but the MACD-Histogram can be shown as a stand-alone indicator. This makes it much easier to identify divergences and crossovers. The MACD-Histogram can be set as an indicator above, below or behind the price plot of the underlying security. The histogram covers a lot of chart space so it is often best to place it above or below the main window. It is possible to show MACD without the histogram in the main window. Choose MACD as an indicator and change the signal line number from 9 to 1 (9,26,1). This will remove the signal line and the histogram. The signal line can be added separately by clicking the advanced indicator options and adding a 9-day EMA.
Click here for a live chart featuring the MACD-Histogram.

Suggested Scans

MACD-Histogram Turns Positive

First, this scan only considers stocks trading above their 200-day moving average, which implies an uptrend overall. Second, the MACD-Histogram moves from negative territory to positive territory. Also, notice that MACD is required to be negative to ensure this upturn occurs after a pullback. This scan is just meant as a starter for further refinement.

[type = stock] AND [country = US] 
AND [Daily SMA(20,Daily Volume) > 40000] 
AND [Daily SMA(60,Daily Close) > 20] 

AND [Daily Close > Daily SMA(200,Daily Close)] 
AND [Yesterday's Daily MACD Hist(12,26,9,Daily Close) < 0] 
AND [Daily MACD Hist(12,26,9,Daily Close) > 0] 
AND [Daily MACD Line(12,26,9,Daily Close) < 0]

MACD-Histogram Turns Negative

First, this scan only considers stocks trading below their 200-day moving average, which implies a downtrend overall. Second, the MACD-Histogram moves from positive territory to negative territory. Also notice that MACD is required to be positive to ensure this downturn occurs after a bounce. This scan is just meant as a starter for further refinement.

[type = stock] AND [country = US] 
AND [Daily SMA(20,Daily Volume) > 40000] 
AND [Daily SMA(60,Daily Close) > 20] 

AND [Daily Close < Daily SMA(200,Daily Close)] 
AND [Yesterday's Daily MACD Hist(12,26,9,Daily Close) > 0] 
AND [Daily MACD Hist(12,26,9,Daily Close) < 0] 
AND [Daily MACD Line(12,26,9,Daily Close) > 0]

For more details on the syntax to use for MACD-Histogram scans, please see our Scanning Indicator Reference in the Support Center.

A Quicker Trade Signal Using MACD’s Histogram May 15, 2014 9:03 am +06:00 by  Rob Pasche Talking Points: The MACD and Signal line crossover gives traditional buy/sell signals. Histogram is the difference between the MACD and Signal line. We can enter when Histogram begins to get smaller rather than wait for a cross. Most technical traders have experience using the more popular oscillators, RSI, CCI, and MACD, etc. But many traders I’ve taught are not aware of the alternative way to use the MACD. In this article we will discuss how to use MACD’s histogram to open trades and show how in many cases we can get a quicker entry than the traditional MACD method. What Does the Histogram Represent? The green histogram or “bar chart” included in the background of the MACD displays the difference between the MACD and Signal line. When the MACD is above the Signal line, the bar is positive. When the MACD is below the Signal line, the bar is negative. The actual height of the bar is the difference between the MACD and signal line itself. Learn Forex: MACD’s Histogram Construction (Created from FXCM’s Marketscope 2.0) The chart above shows what the Histogram represents. The first label shows how the MACD is higher than the Signal line. This creates a positive green bar that has a height equal to the difference of the two lines. The second example the MACD is below the Signal line. This creates a negative green bar that has a height equal to the difference between the two lines. We can also see that when the Blue and Red lines cross, the histogram flips from one side to the other. How to Enter Based On the Histogram So how can we read the histogram to generate trade signals? We first want to track the histogram as it moves away from the zero line, in other words, track it as its bars grow larger. The actual signal comes when the histogram no longer gets larger and produces a smaller bar. Once the histogram prints a smaller bar, we look to trade in the direction of the histogram’s decline. We can see an example of this in the chart below: Learn Forex: MACD Histogram Entry Logic The Sell signal on the left was created by four growing bars in a row followed by a fifth bar that closed smaller. Five bars later, we see the MACD line crossing below the Signal line which is a traditional MACD signal. This later signal would have missed a majority of the move that the Histogram signal would have caught. Therefore, using the histogram as a signal can earn us a greater number of pips. The Buy signal on the right is a similar story. We saw four bars growing consecutively until a 5th bar was created that equaled the 4th. We want to wait until a bar is smaller, so the trigger would have been presented after the 6th bar closed. This buy trade came several bars before the MACD/Signal cross and gave us a better entry as well. Once we are in the trade, we can use sound Money Management to close out the trade appropriately. Good trading! ---Written by Rob Pasche Interested in learning more about Forex trading and strategy development? Signup for a series of free guides, to help you get up to speed on a variety of trading topics! Register HERE.