Exponential Moving Average: EMA in Trading (2024)

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The exponential moving average (EMA) is a weighted moving average that measures a trend, both bullish and bearish, of a financial security over a given period of time. The EMA is used in trading to determine whether the price of a security is going up or down, and can help to forecast future price direction.

Moving averages are technical indicators​ that aim to ‘smooth out’ price fluctuations in order to help separate trends from general market activity. The EMA is a popular technical indicator among traders, as it can be applied to all financial markets, including stocks, forex and commodities. It is often used alongside other technical analysis​ tools and indicators that can be found on our Next Generation trading platform to provide optimal results, such as Bollinger Bands, Relative Strength Index and MACD.

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Exponential Moving Average: EMA in Trading (1)

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EMA in trading

Using the EMA in trading means that it adapts more quickly to changes in price action, which is an advantage over the simple moving average. As more weight is given to the recent price data and less to that which occurred earlier in the trading day, this makes it more sensitive to any change in price data and, theoretically, better for understanding in which direction the price may head next.

The exponential moving average therefore helps to influence traders’ decisions in the exact moment that they place a trade based on the exact price movements, as opposed to what was happening on trading charts​ in the past.

This higher weight of recent price data is useful when analysing volatile markets, where there may be abrupt price changes. It is particularly useful for identifying trends and recent swings on price charts to highlight trading patterns​. It also means that there is less of a lag, as the EMA instead reacts quickly to price changes. Therefore, developing an exponential moving average strategy is great for traders who favour short-term strategies, such as day trading in fast-moving markets.

Exponential Moving Average: EMA in Trading (2)

What is the difference between simple and exponential moving averages?

Unlike the simple moving average​​ (SMA), which is a calculation of the average price of a security over a certain length of time, the EMA gives more weight to the most recently occurring prices. This is the major difference between the moving averages, and it also explains why the EMA is preferred by many traders, as it is more responsive than the SMA. However, as with most technical indicators, the EMA works better when used with its component rather than by itself, as the EMA alone cannot guarantee success.

Exponential Moving Average: EMA in Trading (3)

How to calculate the EMA

In order to learn how to calculate the exponential moving average, the simple moving average should be calculated first to get the initial EMA value. This will then lead you to finding the exponential moving average equation.

To find the simple moving average, you must find the average number of the past data points, which are often past closing prices. If you were seeking a security’s 50-day SMA, the closing prices of the past 50 days would be added together, then divided by 50.

Secondly, calculate the the weighting multiplier (or smoothing constant). This happens by dividing 2 by the number of time periods, plus 1.

Thirdly, calculate the EMA for each day between the initial EMA value and the current day, using the price, the multiplier and the EMA value of the previous time period.

Exponential moving average formula

  • SMA = (N – period sum) ÷ N
  • The weighting multiplier (or smoothing constant) = 2 ÷ (time period + 1)
  • EMA = (closing price – previous day’s EMA) x weighting multiplier + previous day’s EMA

When N equals the number of days in the given time period, and period sum is the sum of closing prices in that time period.

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How to use the EMA indicator

When a trader is using an exponential moving average indicator within their strategy, they may choose to buy when the price dips near, or just below, the EMA line. On the other hand, when the EMA is falling, traders may choose to sell when the price is rallying towards, or just above the EMA.

The EMA can be an indicator for support and resistance levels​. This is because support and resistance levels are dynamic and constantly evolving, due to the fact that they’re based on more recent price action​. When the EMA is rising, it is supporting the price action, while the falling EMA is providing resistance to positive price action.

However, a key drawback of the exponential moving average is that it is based on historical data, so it cannot predict future price movements. Furthermore, the EMA can also be prone to false signals, such as false positives and false negatives, meaning that it could mislead traders. By interpreting trendlines​​ based on historical data, traders may make decisions based upon the conclusion that the trend will repeat itself.

How to set up EMA

By registering for an account, you can take advantage of our charting features, including a wide range of technical indicators. Both the SMA and EMA, along with a weighted moving average indicator, are available to incorporate within your trading strategy on our award-winning online trading platform, Next Generation. You can also use our drawing tools to add support and resistance levels, trendlines, channels, Fibonacci retracements and other price projection tools. You can register for a demo account first to practise with £10,000 worth of virtual funds.

Simply choose your product between spread betting and CFDs​, choose the market that you would like to trade and a particular asset, and add the EMA indicator to your trading chart through the drawing tools section.

Exponential Moving Average: EMA in Trading (4)

How to set up EMA on MT4

We also host the internationally recognised MetaTrader 4 system for those that are already familiar with the platform. Many of the same technical indicators are available on MT4 as well as Next Generation, including the simple and exponential moving averages. Many other indicators and add-ons are ready to download by following the process to create an MT4 account.

Exponential Moving Average: EMA in Trading (5)

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Summary

The exponential moving average is a valuable tool for traders to help identify trends of a financial instrument over a period of time. By giving more weight to recent price movements rather than equal averages like the simple moving average, a trader may be able to account for a higher degree of subtlety within the price action. However, as it is based on historical data, it is not a credible source for future predictions and traders can be misled by false signals. Therefore, it should be used in conjunction with other forms of technical and fundamental analysis when building an efficient trading strategy​​.

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Exponential Moving Average: EMA in Trading (2024)

FAQs

Exponential Moving Average: EMA in Trading? ›

The Exponential Moving Average (EMA) is a technical indicator used in trading practices that shows how the price of an asset or security changes over a certain period of time. The EMA is different from a simple moving average in that it places more weight on recent data points (i.e., recent prices).

What is an EMA Exponential Moving Average? ›

The exponential moving average (EMA meaning) is a technical indicator that determines the direction in which the price of a security is moving based on past prices. Therefore, EMAs are lag indicators that don't predict future prices but showcase the trend that the stock price is following.

How to use EMA for trading? ›

When a trader is using an exponential moving average indicator within their strategy, they may choose to buy when the price dips near, or just below, the EMA line. On the other hand, when the EMA is falling, traders may choose to sell when the price is rallying towards, or just above the EMA.

What is the best EMA for trading? ›

Experts suggest that using 15-minute EMA is most effective for intraday trades that are carried out during periods of high market volatility. To interpret the 20 EMA, you need to compare it with the prevailing stock price. If the stock price is below the 20 EMA, it signals a possible downtrend.

What should I set my EMA to? ›

Optimal EMA Settings for Day Traders
  • Short-Term EMAs (like the 8ema or 9ema): These EMAs are ideal for capturing short-term trends and quick market movements. ...
  • Medium-Term EMAs (like 21ema, 30ema, or 50ema): These provide a broader view of the market trend, smoothing out short-term volatility.

How to interpret EMA? ›

This is one of the fundamental functions of EMA. When an EMA line is going in an upward direction, it denotes an uptrend, whereas when it goes down, it indicates a downtrend. Usually, if the EMA line is above the price of the asset, it is likely to fall next.

Is exponential moving average good? ›

With moving averages in general, the longer the time period, the slower it is to react to price movement. But everything else being equal, an EMA will track price more closely than an SMA. Because of this, the EMA is typically considered more appropriate in short-term trading.

What is 5 8 13 ema trading strategy? ›

How Does the 5-8-13 EMA Crossover Work? The crossover detects momentum shifts, which can hint at significant price moves in the near term. When the 5-EMA crosses above the 8 and 13 EMAs, it suggests a rising bullish momentum. When the opposite happens, it indicates bearish momentum.

Do professional traders use EMA? ›

Traders often look at exponential moving averages instead, as they react quicker to price changes, providing a more accurate reading. Time is of the essence when trading. An EMA and double exponential moving average (DEMA) both reflect the current price trend for given securities in a more up-to-date reading.

What is the best moving average for day trading? ›

Five, eight, and 13-bar simple moving averages (SMAs) offer relatively strong inputs for day traders seeking an edge in trading the market from both the long and short sides. Moving averages work as macro filters as well, telling the observant trader the best times to stand aside and wait for more favorable conditions.

When should I buy using EMA? ›

A rising EMA tends to support the price action, while a falling EMA tends to provide resistance to price action. This reinforces the strategy of buying when the price is near the rising EMA and selling when the price is near the falling EMA.

What does the simple moving average tell you? ›

A simple moving average calculates the average price during a specified period of time. A simple moving average is a technical indicator that can aid in determining if an asset price will continue or if it will reverse a bull or bear trend.

How to use moving average effectively? ›

Here are some factors to consider: Time frame: Shorter-term traders might use faster-moving averages like the 5-day or 10-day, while longer-term investors might prefer the 50-day or 200-day averages. Market volatility: In more volatile markets, you might want to use an EMA or WMA to react quicker to price changes.

How to use EMA for day trading? ›

Trend analysis using EMA

When EMA is above the price and upward-sloping it generally signifies bullish momentum, but with increased resistance. Conversely, if the EMA is sloping downward and is above the price, it may suggest a bearish trend.

What EMA is best for scalping? ›

Which EMA is best for scalping? In forex scalping, selecting the right EMA indicator is crucial and depends on your chosen trading timeframe. For 1-minute charts, a 5-period or 9-period EMA is commonly used, while 15-minute charts often utilize 12-period and 26-period EMAs.

What is the 3 EMA strategy? ›

The three-moving average crossover strategy is a trading strategy that uses 3 exponential moving averages of various lengths – 9 EMA, 21 EMA, and 55 EMA. All moving averages are lagging technical indicators however when used correctly, can help frame the market for a trader.

What is a 10 EMA moving average? ›

The weighting given to the most recent price is greater for a shorter-period EMA than for a longer-period EMA. For example, an 18.18% multiplier is applied to the most recent price data for a 10-day EMA, as we did above, whereas for a 20-day EMA, only a 9.52% multiplier weighting is used.

What is the Exponential Moving Average for dummies? ›

The exponential moving average (EMA) is a line that is drawn on stock charts, which indicates the average price of the stock over a given period of time. You can adjust that time period as you wish. It allows for you to "smooth out" the price changes in order to see the overall trend in price.

What does 20 EMA crossing 50 EMA mean? ›

A common trading strategy utilizing EMAs is to trade based on the position of a shorter-term EMA in relation to a longer-term EMA. For example, traders are bullish when the 20 EMA crosses above the 50 EMA or remains above the 50 EMA, and only turn bearish if the 20 EMA falls below the 50 EMA.

Why is 20 EMA important? ›

The 20-day moving average

It is a relatively simple indicator to use, making it a good choice for both beginner and experienced traders. Pullback and momentum traders often use 20EMA to identify the current market momentum and potential entry & exit points.

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