What They are and How to Use Them for High-Impact Results
Using two moving averages – one of shorter length and one of longer length – to generate trading signals is commonly used among traders today. This method, known as the “double crossover method,â€‌ is especially suited for securities that happen to be in trending, as opposed to range-bound markets. (Trending markets are characterized by steady upward price movement in bull markets and steady downward price movement in bear markets. Prolonged sideways movement with little sustained progress up or down is characteristic of “range boundâ€‌ markets.)

There are many different ways in which this double crossover method may be used. The combination possibilities are endless. The two moving averages can be daily or weekly, but one must always be of a shorter time frame than the other. For example, you might consider using a 12- and 24- day moving average in conjunction with security’s price chart. Or a 10- and 30- day, or (as in the chart examples we provide here, a 30-day and 60-day average).The shorter moving average measures the short-term trend, while the longer MA measures the longer-term trend. Buying and selling signals are given whenever the two cross over or under one another.

Trading rules for the double crossover method are quite simple: whenever the shorter-term moving average crosses above the longer-term moving average – and the longer-term MA happens to be rising – a buy signal is generated. Conversely, whenever the shorter-term average falls beneath the longer-term average - and the longer-term average happens to be falling – a sell signal is generated.

BigCharts.com provides a free charting service through its internet site (www.bigcharts.com), which contains charting tools for constructing several varieties of moving averages. The daily and weekly bar charts on the BigCharts.com Web site can be modified to the time frame that best suites the trader. Included in this chapter are a number of BigCharts.com stock charts, and the buy or sell signals they generated based on the crossover method using the 30-day 60-day moving average. Bear in mind that the same rules that apply for interpreting the 30-day and 60-day moving average combo apply for all types of double series moving averages; and can be used for all time frames, including daily, weekly and monthly charts