Have you heard of the Death Cross and the Golden Cross in your trading career? These two crosses occur when the 50-period simple moving average crosses through the 200 simple moving average. Read on and we will explore these two terms in trading.

Traders looking for areas of support and resistance many times will look at moving averages to gain a market opinion. Buy and sell orders are often placed around moving averages. These moving averages can become self-fulfilling prophecies. There are so many traders looking at these same moving averages, traders tend to observe them and react. Please note; there are no guarantees in trading: anything can happen.

A moving average is the average closing price of an instrument over a certain period of time. The time period can be any set number of bars such as 5 minutes, daily, or weekly. A moving average can also be applied to charts such as volume, tick, and range charts. A new calculation prints on the moving average line as each period elapses. Moving averages tend to lag behind as an instrument trends. The lagging takes the erratic price action of the extreme highs and lows, creating an average of the movement. This tends to create a smoother line with less chop.

Some of the more common moving averages are the 8-period exponential moving average, 21-period exponential moving average, the 50-period simple moving average, the 100-period simple moving average, and the 200-period simple moving average.

There are many more moving averages which each trader can use. It depends on your method of trading.

A very good video showing how the 200 simple moving average and the 50 simple moving average can act as support and resistance can be found here: 50-Period Simple Moving Average.

When a Death Cross and a Golden Cross occur, usually an X will print on the chart.

If the 50 Simple Moving Average (SMA) crosses down through the 200 Simple Moving Average (SMA), it is considered to be a bearish signal. This is often called a Death Cross.

If the 50 Simple Moving Average (SMA) crosses up through the 200 Simple Moving Average (SMA), it is considered to be a bullish signal. This is often called a Golden Cross.

Figure A: Daily Chart SPX SHOWING A DEATH CROSS AND A GOLDEN CROSS

Notice Figure A above. The vertical green lines show a Death Cross as well as a Golden Cross. Do you see the X where the two moving averages cross?

The Death Cross occurred when the 50 Simple Moving Average crossed below the 200 Simple Moving Average. Please notice the price action as the Death Cross occurred; there was some bearish price action.

Now let's take a look at the Golden Cross as shown on Figure A. Once again, notice the price action when the Golden Cross occurred, which is a sign price should be reversing to the upside. The price action was actually moving down for a while, then moved bullish.

The Death Cross and the Golden Cross are signals which are not always completely reliable. So traders beware. It's important to be proficient and confident in your method of trading.

When using moving averages as a basis for your trading decisions, it may be a wise decision to look at other nuances which are occurring such as price action, momentum as well as any indicators you base your trading decisions upon.

References for this article are as follows:

- Investopedia article on Death Cross
- Investopedia article on 50 Simple Moving Average
- Big Trends article on Moving Averages

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Feel free to comment below if you would like to share ideas on how the Golden Cross and Death Cross have helped you in your trading.

]]>The origin of moving averages can be traced back to 18th Century Japan, and are now used by the majority of traders in some form or another. Those who have studied the early use of moving averages have the understanding that simple moving averages (SMA) were used long before exponential moving averages (EMA). The reason is believed to be because EMAs are built upon the SMA framework, and the SMA was more easily understood during the early use of moving averages. This week I will cover the basic differences between these two types of moving averages.

A simple moving average is built by calculating the average of a certain period of time. For instance it could be minutes, days, weeks, months, or years.

Some traders prefer to use simple moving averages for tracking market price action because they are easy to understand and calculate. In the early days of trading before the sophisticated technology available today, traders had to rely primarily on market price action as their only means of technical analysis. Many had to calculate market prices manually, and plotted those prices to determine a trend.

To calculate a simple moving average, let's use a 20-day moving average as an example. Simply add the closing prices of the last 20 days, and divide by 20.

While this formula is a simple one, it is worth noting that the SMA formula is not only based on daily closing prices, but it is a mean of prices – a “subset”. It is called a “moving average” because the group of closing prices used in the calculation relate to the points on the chart. This means the older days are dropped from the calculation of the SMA in favor of new closing price days. Therefore, a new calculation is always needed to correspond to the time frame of the average being used. So, in the 20-day example, this is recalculated by adding the new day and dropping the previous 20th day.

The exponential moving average has been increasing in popularity by many traders over recent years. The EMA focuses on the most recent prices, rather than a long series of data points. With technology available today, the EMA is calculated automatically on most charting services. The EMA gives weight to more recent prices, and it gives more emphasis on closing prices which are closer to the present time. For those interested, however, below is the formula for calculating the EMA, according to Investopedia.com.

Formula to Calculate EMA Courtesy of Investopedia.com

To illustrate the differences between these two moving averages, both are plotted on the SPX chart below:

SPX 6 Month Chart with EMA and SMA

The above chart indicates the 50-day EMA (black) and SMA (blue). Note that the EMA responds more quickly to changing prices than the SMA. You will notice how the EMA has a higher value than the SMA when prices are rising, and also falls more quickly than the SMA when prices are declining. This responsiveness of the EMA is one reason many traders prefer to use the EMA over the SMA.

Whichever moving average you may choose to use, both can be customized to a trader's preference. Some of the most common time periods used in moving averages are 15, 20, 30, 50, 100, and 200 days. The shorter the time span used, the more sensitive the average will be to changes in the price of the underlying. The longer the time frame, the less sensitive the moving average will be. There is no time frame that is perfect for every trader and every strategy.

Traders using moving averages usually experiment with various time periods in order to find one, or multiple, that suits their trade strategy.

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