Clearly, no process of analysis or trading is foolproof and no one has a magic formula or crystal ball to know exactly what the markets will do next. For this reason, we develop tools that help us to both anticipate and follow changes in the supply and demand of investment instruments. We want to react objectively to the changes in the price trend, and moving averages are a great tools in this regard. Whether you are interested in long, intermediate, or short term price trends, moving averages can help you locate and follow the price action.
What is a Moving Average?
A moving average is just what the name implies. It is an average of price data for a specific period of time. "Moving" comes from the fact that the average changes in value every time a new unit of time is added to the period. Moving averages can be simple, exponential, weighted or centered. The average can be based on closing prices, highs, lows, or even the midpoint value of a price bar. Investors and traders need not perform these calculations themselves as they are a part of most charting platforms, including the free web-based platforms.
It should be noted that when price bars or prices are mentioned, I am referring to OHLC price bars unless otherwise mentioned. Open-high-low-close price bars (OHLC) are represented by a vertical bar that that shows the high and the low for the time period measured. There is a short horizontal line to the left of the bar that represents the opening price and a line to the right that represents the closing price.
For brevity sake, we will be discussing the use of simple moving averages calculated at the price bar close. As and example, a ten period simple moving average would be the average closing price over the last ten time periods, or price bars. A weekly chart with a 10-period moving average will therefore produce a 10-week moving average. A daily chart (referring to the price bar period, not the period visible on the screen) would provide you with a 10-day moving average; one minute data would give you a 10-minute moving average, and so on...
Below is an example of a 13period MA on a weekly bar chart. This13-week MA is the blue line running through the price bar series:

Trend Follower, Not Trend Predictor
In the past, we talked about basic trend identification using the sequential highs and lows in a price data series. We then talked about using trendlines for basic trend identification. Continuing in the trend following pursuit, moving averages help by smoothing out the trend.
Moving averages have no real predictive value, but help us know what the trend is doing right now. Moving averages aid us in following an emerging trend until it matures and reverses direction. Moving Averages can even be used as trailing stops for a trend you are positioned in. Although moving averages don't give us price targets, they do help us in following both up-trends and downtrends. Sideways trends are usually troublesome for moving averages, as they are for most trend following techniques.
Because the market is much smarter than any individual investor or trader, reactive tools & rules should be a large part of your trading and investing decision process, . Moving averages fit this profile. They were one of the first tools I found, and they are still one of the go to tools I use. They are that simple and that good at following price trend in any liquid and free market.
Moving Average Signals
There are three main moving average signals of trend: a single moving average penetration by price, double moving average cross, and a triple moving average cross. Its best to apply filters to these signals in order to reduces whipsaw trades. Whipsaw trades, or signals, are incorrect exit signals that result in a new signal to reenter the price trend you were previously positioned in.
Single Moving Average
Overlaying a price series with a single moving average is the most simple use of the tool. The signal to buy is when prices move above the moving average. The signal to sell is when prices move below the average.
As mentioned, we need to have a little bit of a filter to protect against whipsaw signals. Some people use percentage moves, but that is just requires another calculation. I prefer to keep it simple. The two filters I have used most often are: 1) The price bar has to close above the moving average, thus producing a signal to be executed after the next price bar opens. 2) The price bar(s) following the signal bar must exceed the signal bar, thus confirming the signal. The same filters would be applied to a downtrend. These filters let price guide you and aid in confirming the changes to supply and demand which are emerging in the market under study.
Let's take a look at the same chart we used above, with arrows showing signals generated using the second filter technique mentioned:

What do we see with this single moving average study? I see two key results: 1) There were ten signals generated, with many being whipsaw signals. These results tell us that the signal is two sensitive. 2) We also see that this system is always in the market. We are either selling it short or buying long. It would be preferable to reduce the whipsaws, knowing some are unavoidable, as well as producing a signal system that also had us out of the market at times when there was more potential for sideways, or counter-trend, price action.
Dual Moving Average
By using two moving averages of varying lengths, further signal filtration can be produced. This method is called a double moving average cross. When the shorter moving average crosses the longer moving average, you have a buy or a sell signal. We can add the second filter technique to provide further trend confirmation and filtering.

In the chart above, we took the same price series and the original 13-period moving average, and then we added a 40-period moving average to create a double MA cross signal system. The results were pretty drastic. We took signals down from ten signals to two signals! We have followed the majority of the two major trends and have greatly reduced whipsaw signals. We have success with the dual moving average cross with price bar follow through filter system.
Of course there are limitations with this system too. We are still forced to be either long or short the market with no signal resulting in a cash or flat position. Although, I'm sure being always positioned on one side can lead to long-term success given proper risk management and position sizing, I would rather be objectively signaled out of the market during counter-trend and sideways action if possible. This is especially true if you are trading leveraged products like futures contracts, which have an expiration date, or even the leveraged funds that are available these days.
There are a couple of ways a achieve the desired result of having a system that, in addition to producing signals to buy or sell short a market, also produces signals to liquidate the position and move to cash. We could create an algorithm for a trailing stop that would be more sensitive than the MA cross, and would therefore take us out of the position into a cash (or flat) stance. That is a method I actually prefer, but it is beyond the scope of this article. We are a addressing the use of moving averages here, so lets see what we can do just with the basic MA entry and exit signals themselves.
To create a moving average signal system that will tell us to buy, sell short, or liquidate positions, we could use an additional chart of a longer time duration with its own moving average. This would put us in line with the next larger degree of trend, and would tell us not to trade the signals we have that are against that larger trend. Another method we could use would be a triple moving average cross on the same chart.
Triple Moving Average
A triple moving average crossover will provide additional filtering. To get the triple average, you will simply need three moving averages of increasing lengths. When the fast average crosses the middle average, you have a signal that a trend may be emerging. A cross of the slower moving average by the middle moving average then gives you the signal to enter the trade. The liquidation signal is when the fast moving average crosses back over the middle average. In this way, you are slow to enter and quick to exit; locking in profits and only trading in the direction of the next larger degree of trend than the actual trend you are trading.
In the chart below, arrows mark the entry signals to buy or sell short, while "L" marks the signals to liquidate positions.
Note: there should be an additional liquidation signal between the last two sell signal arrows, but it somehow got left out.The moving averages used in this chart are 4, 18, 40. With the triple MA we are definitely given signals to be in cash part of the time, but its not long before we are back in position. This does not seem to be much, if any, of an improvement over the dual MA from before. As long as your risk management profile would allow for fairly wide stops, the dual MA system appears to outperform this triple MA system. An important factor here is that the dual MA above is wide enough of a range to let the trend develop, with counter-trend moves and all -letting the market breath. If we were to change the lengths of the averages we could probably create better results with the triple MA method.
This is all well an good, but is it still possible for a more active investor or trader to participate in the intermediate term trend in a way that allows for locking in tighter profits? For those trading leveraged and time sensitive products, this is a real issue to consider. Perhaps we need to use the dual MA cross with a longer-term filter.
Long Term Moving Average
Using a long term moving average can help investors know when the risk of holding on to a long-term position is greater than the risk of exiting the position in favor of cash. Long term moving averages can also align the more active investor and trader with the larger, or primary, trend.

As we can see in the monthly chart above, a 12 month moving average has historically given a good indication of the larger trend's current direction. Investors, using this measure, with a closing price filter, alone would have had a couple of whipsaw signals, while being much more profitable than a diversified buy-and-hope approach based on fundamental analysis and recomendations.
In addition, traders could use this to filter out short and intermediate term signals on daily and weekly charts. Lets look at a daily chart below with a dual moving average and use it in conjunction with the 12-month MA chart above.
Dual MA and Long Term MA Combination
As before, the entry signals are represented by arrows and liquidation of position signals are represented by "L". We are using a 10-day and 20-day MA cross signal on the daily chart. The rules are to only take entry signals in the direction of the larger trend from the 12-month MA. Signals against the primary trend are used for liquidation signals.Using the monthly chart as a filter, the daily chart for dual MA trade signals, and adding the additional following price bar filter would have allowed a trader to catch most of the profits produced by the downtrend from the October 2007 highs. You will find overall positive results in both bull and bear markets, and throughout market history using this approach of filtering the secondary, or intermediate term, trend by the primary, or long term, trend with moving averages. This approach allows a filtered entry, liquidation to cash signals during counter trend moves, and quickened exits to lock in profits or cut losses short.
Conclusion
It appears that the use of the dual MA at the intermediate term, with the single long term filter would work best for locking in the most profits out of all the methods shown here. For many investors, using the wider dual moving averages on the weekly chart as was shown earlier would be extremely successful as well. The decision between these two MA systems would need to be based on investor time frame, personality, and product or market being used.
A similar approach in the stock market (all the charts shown were the S&P 500 index) would be to use a daily chart with 50 and 200 day moving averages in a dual MA cross method. Many participants in the marketplace watch the 50 and 200 day averages. You could use them in a cross to indicate changes in the primary trend. Go ahead, pull up your favorite charting website or software and put the 50 and 200 over the S&P 500 and you will see once again that a kid with a straight edge can outperform the market.
Technical analysis is the study of the supply and demand of the products we are investing in and trading. We are looking at and measuring price trend as it is bid up and bid down in real time, for the investing time frames we are interested in. Analysis of supply and demand in the marketplace is differentiated from fundamental analysis, in that the latter looks at what is currently assumed to be the causes of changes in the supply and demand of the instrument. In this way, fundamental analysis is at best several steps away from objectively determining whether to buy or sell an investment product. At worst, fundamental analysis can be terribly off, because the assumption of what is moving prices has its own pitfalls. In reality, fundamental data typically lags market price changes, and therefore we know that the market itself is the real time measure of societal optimism and pessimism about economic activity, and therefore the best gauge for investment decisions. The price trend does not lie. Fundamental analysts were publishing buy signals on Enron all the way down its slope of hope. Technicians were selling it short, or in cash. The same is true this time around.
A common misconception is that only short term traders should use technical market analysis. It is currently popular for long term investors to use "fundamental" analysis and a diversified buy and hope strategy, not dissimilar to a very slow game of roulette or craps. I have shown here, as in other posts, that long term investors should also use price trend analysis as their very first line of investment decision making. In fact, I believe they are best served by using trend analysis as their first and last lines of investment decision making.
Trend analysis helps the investor to step back and take a bird's eye view of the herding behavior of the marketplace, while watching for changes in the trend in order to act accordingly. If the goal is both capital protection and capital perpetuation, we need to be with 60% to 80% of the significant price trends within our investing time frame. We can either throw money at the market blindly in a buy and hope game of roulette, or we can approach the market with the tools appropriate to catch and ride those financial waves. Moving averages are wonderfully simple tools for identifying and following the significant price trends in financial markets.










