
Techniques of Moving Average Crossover Moving Average for Stock Trading
Moving averages are a method for technical analysis. With help of this method you view at the chart of astock alone and make predictions about whether it is relatively high or low at the current price.
The moving average (shortened MA) of a stock gets calculated from the historical asset prices, it is the arithmetic average of the stock price for a time segment before the day of interest. This time peroid is also called the timewindow.The length of the timeperiod is the most significant variable for calculation. A widely used timewindow for MAs is 200 days, meaning that the average gets computed using the last two hundred days asset price. The phrase ‘moving’ comes from the fact that the timewindow is sliding along the stock price chart as time moves onward.
Computing a MA gives you a trend line derived from a stock or index chart. This trend line irons out out the fluctuations which happen all the time in stock market, and expresses strong trends more clearly.
By observing the trend line you can quickly get an overlook how the stock level has been moving, and avoid investing when being in a negative movement, and better invest into an upgoing market. In addition to this, when comparing the actual value of the stock with its moving average, you can make a forecast about the intensity of the movement, expressed using the distance the current price has from its average.
The preferred use for moving averages is to use them as a trade signal, which signalizes you to buy or sell a stock. The simplest way for this is to treat the cross over of the stock price line with the line of the MA as signal: In case the stock price drops downward through the moving average it is a signal to sell, when the opposite happens it is a signal to buy.
The big problem with this strategy is that ‘false signals’ may occur often.False signals are signals that do not turn out be right, e.g. when the MA crosses the stock line from down to up and signalizes a ‘buy’, but soon after that drops again under the average which signalizes a ’sell’. The problem with this is that there may have been little or no gain in stock price, but the buy and sell proccess costs money in form of e.g. broker fees or taxes.
To weaken the false signal effect, there is the strategy of using two MAs crossing instead of one MA If you look at a stock chart you see it has many ups & downs, it is very spiky. Now these spikes or peaks are a problem, because they may crossover through the MA and fall back soon causing a wrong signal and unwanted trade. But if you view a moving average, you see it has no spikes, as it irons them out due to its averaging.
So using a moving average crossover moving average strategy is less likely to result in false indications. The timewindows for the 2 averages should be different of course, the usual approach is to take 200 days for the long average, and 50 or 38 days for the smaller average timewindow.
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