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Exponential Moving Average (EMA)

The Exponential Moving Average (EMA) weighs current prices more heavily than past prices. This gives the Exponential Moving Average the advantage of being quicker to respond to price fluctuations than a Simple Moving Average; however, that can also be viewed as a disadvantage because the EMA is more prone to whipsaws (i.e. false signals).

The chart below of eBay (EBAY) stock shows the difference between a 10-day Exponential Moving Average (EMA) and the 10-day regular Simple Moving Average (SMA):

exponential moving average reacts faster to price changes than the simple moving average

The main thing to notice is how much quicker the EMA responds to price reversals; whereas the SMA lags during periods of reversal.

The chart below of the Nasdaq 100 exchange traded fund (QQQQ) shows the difference between moving average crossovers (see: Moving Average Crossovers) possible buy and sell signals with a EMA and a SMA:

three simple moving average crossover potential buy and sell signals

As the chart above of the QQQQ’s illustrates, even though EMA’s are quicker to respond to price movement, EMA’s are not necessarily faster to give possible buy and sell signals when using moving average crossovers.

Also note that the concept illustrated in the chart above with Exponential Moving Average crossovers is the concept behind the popular Moving Average Convergence Divergence (MACD) indicator; (see: MACD).

Since Exponential Moving Averages weigh current prices more heavily than past prices, the EMA is viewed by many traders as superior to the Simple Moving Average; however, every trader should weigh the pros and the cons of the EMA and decide in which manner they will be using moving averages.

Nevertheless, Moving Averages remain the most popular technical analysis indicator out on the market today.

The information above is for informational and entertainment purposes only and does not constitute trading advice or a solicitation to buy or sell any stock, option, future, commodity, or forex product. Past performance is not necessarily an indication of future performance. Trading is inherently risky. shall not be liable for any special or consequential damages that result from the use of or the inability to use, the materials and information provided by this site. See full disclaimer.

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