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How Average True Range (ATR) Can Improve Your Trading
Use this volatility measure to improve order placement and market analysis.
Average true range (ATR) is a volatility indicator that shows how much an asset moves, on average, during a given time frame. The indicator can help day traders confirm when they might want to initiate a trade, and it can be used to determine the placement of a stop loss order.
Examining the ATR Indicator
The ATR indicator moves up and down as price moves in an asset become larger or smaller. A new ATR reading is calculated as each time period passes. On a oneminute chart, a new ATR reading is calculated every minute. On a daily chart, a new ATR is calculated every day. All these readings are plotted to form a continuous line, so traders can see how volatility has changed over time.
To calculate the ATR by hand, you must first calculate a series of true ranges (TRs). The TR for a given trading period is the greatest of the following:
 Current high minus the previous close
 Current low minus the previous close
 Current high minus the current low
Whether the number is positive or negative doesn’t matter. The highest absolute value is used in the calculation.
The values are recorded for each period, and then an average is taken. Typically, the number of periods used in the calculation is 14.
J. Welles Wilder, Jr., who developed the ATR, used the following formula for subsequent periods—after the initial 14period ATR was completed—to smooth out the data:
Current ATR = [(Prior ATR x 13) + Current TR] / 14
How ATR Can Aid in Trading Decisions
Day traders can use information on how much an asset typically moves in a certain period for plotting profit targets and determining whether a trade should be attempted.
Assume a stock moves $1 a day, on average. There is no significant news out, but the stock is already up $1.20 on the day. The trading range (high minus low) is 1.35. The price has already moved 35% more than the average, and now you’re getting a buy signal from a strategy. While the buy signal may be valid, since the price has already moved significantly more than average, betting that the price will continue to go up and expand the range even further may not be a prudent decision. The trade goes against the odds.
Since the price is already up substantially and has moved more than the average, the price is more likely to fall, staying within the price range already established. While buying once the price is near the top of the daily range—and the range is well beyond average—isn’t prudent, selling or shorting is probably the better choice, assuming a valid sell signal occurs.

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Entries and exits should not be based on the ATR alone. The ATR is a tool that is used in conjunction with a strategy to help filter trades. For example, in the situation above, you shouldn’t sell or short simply because the price has moved up and the daily range is larger than usual. Only if a valid sell signal occurs, based on your particular strategy, would the ATR help confirm the trade.
The opposite could also occur if the price drops and is trading near the low of the day and the price range for the day is larger than usual. In this case, if a strategy produces a sell signal, you should ignore it or take it with extreme caution. While the price may continue to fall, it is against the odds. More likely the price will move up and stay between the daily high and low already established. Look for a buy signal based on your strategy.
You should review historical ATR readings as well. Even though the stock may be trading beyond the current ATR, based on history, the movement may be quite normal.
Average True Range – ATR Definition
What is Average True Range – ATR?
The average true range (ATR) is a technical analysis indicator that measures market volatility by decomposing the entire range of an asset price for that period. Specifically, ATR is a measure of volatility introduced by market technician J. Welles Wilder Jr. in his book, “New Concepts in Technical Trading Systems.”
The true range indicator is taken as the greatest of the following: current high less the current low; the absolute value of the current high less the previous close; and the absolute value of the current low less the previous close. The average true range is then a moving average, generally using 14 days, of the true ranges.
Key Takeaways
 Average true range (ATR) is a technical indicator measuring market volatility.
 It is typically derived from the 14day moving average of a series of true range indicators.
 It was originally developed for use in commodities markets but has since been applied to all types of securities.
Calculating Volatility with Average True Range
The Formula For ATR Is
The first step in calculating ATR is to find a series of true range values for a security. The price range of an asset for a given trading day is simply its high minus its low. Meanwhile, the true range is more encompassing and is defined as:
How To Calculate ATR
Traders can use shorter periods than 14 days to generate more trading signals, while longer periods have a higher probability to generate less trading signals. For example, assume a shortterm trader only wishes to analyze the volatility of a stock over a period of five trading days. Therefore, the trader could calculate the fiveday ATR. Assuming the historical price data is arranged in reverse chronological order, the trader finds the maximum of the absolute value of the current high minus the current low, absolute value of the current high minus the previous close and the absolute value of the current low minus the previous close. These calculations of the true range are done for the five most recent trading days and are then averaged to calculate the first value of the fiveday ATR.
What Does Average True Range Tell You?
Wilder originally developed the average true range (ATR) for commodities, but the indicator can also be used for stocks and indices. Simply put, a stock experiencing a high level of volatility has a higher ATR, and a low volatility stock has a lower ATR. The ATR may be used by market technicians to enter and exit trades, and it is a useful tool to add to a trading system. It was created to allow traders to more accurately measure the daily volatility of an asset by using simple calculations. The indicator does not indicate the price direction; rather it is used primarily to measure volatility caused by gaps and limit up or down moves. The ATR is fairly simple to calculate and only needs historical price data.
The use of the ATR is commonly used as an exit method that can be applied no matter how the entry decision is made. One popular technique is known as the “chandelier exit” and was developed by Chuck LeBeau. The chandelier exit places a trailing stop under the highest high the stock reached since you entered the trade. The distance between the highest high and the stop level is defined as some multiple times the ATR. For example, we can subtract three times the value of the ATR from the highest high since we entered the trade.
Average true range can also give a trader an indication of what size trade to put on in derivatives markets. It is possible to use the ATR approach to position sizing that accounts for an individual trader’s own willingness to accept risk as well as the volatility of the underlying market. (For a detailed example on how to use ATR for this purpose, read our article, Sizing A Futures Trade Using Average True Range.)
Example Of How To Use ATR
As a hypothetical example, assume the first value of the fiveday ATR is calculated at 1.41 and the sixth day has a true range of 1.09. The sequential ATR value could be estimated by multiplying the previous value of the ATR by the number of days less one, and then adding the true range for the current period to the product. Next, divide the sum by the selected timeframe. For example, the second value of the ATR is estimated to be 1.35, or (1.41 * (5 – 1) + (1.09)) / 5. The formula could then be repeated over the entire time period.
Limitations Of ATR
There are two main limitations to using the average true range indicator. The first is that ATR is a subjective measure – meaning that it is open to interpretation. There is no single ATR value that will tell you with any certainty that a trend is about to reverse or not. Instead, ATR readings should always be compared against earlier readings to get a feel of a trend’s strength or weakness.
Second, ATR also only measures volatility and not the direction of an asset’s price. This can sometimes result in mixed signals, particularly when markets are experiencing pivots or when trends are at turning points. For instance, a sudden increase in the ATR following a large move counter to the prevailing trend may lead some traders think the ATR is confirming the old trend; however, this may not actually be the case.
The Average True Range (ATR) And Binary Options
The Average True Range (ATR) is a technical indicator that can help binary options traders make more money by trading options with higher payouts. This article introduces you to the ATR and the ways in which it can enrich your strategy.
In detail, you will learn:
 What Is The Average True Range (ATR)?
 How Can The Average True Range (ATR) Help Traders?
 Which Limitations Does The ATR Have?
 Three Examples Of The Average True Range (ATR) In Use
With this information, you will immediately be able to enhance your strategy with the ATR and make more money.
What Is The Average True Range (ATR)?
The ATR is a technical indicator. It calculates a simple to interpret value based on past market movements, which allows you to understand what is going on and predict what will happen next.
This approach entirely focuses on price action. It analyzes what happens to the price of an asset to understand how traders feel about this asset.
In the case of the ATR, this approach focuses on the range of a period. The ATR wants to find out how far an average period of an asset has moved in the past.
 The ATR’s value is calculated by subtracting the current period’s low from its high.
 If the previous period closed outside of the current period, the ATR uses the absolute value of the currents period’s high minus the previous period’s close (for rising periods) or the absolute value of the currents period’s low minus the previous period’s close (for falling periods).
In short, the ATR uses one of these four values:
Rising period  Falling period  
Previous close within the range of the current period  ATR = current high – current low  ATR = current high – current low 
Previous close outside the range of the current period  ATR = current high – previous close  ATR = current low – previous close 
The ATR repeats this calculation for as many periods as you want and then calculates the exponentially smoothed moving average of all results.
If you are looking at an asset with a current value of £100 in a 1hour chart and the ATR reads 0.2, you know that this asset has moved on average £0.2 up or down over the past periods. This information can help you make better predictions and trade more profitable binary options types.
ATR For the FTSE Index:
How Can The Average True Range (ATR) Help Traders?
The ATR is important for binary options traders because it allows them to predict the range of a movement. Without this prediction, you can only invest in high/low options. This option type wins you a trade with any movement in the right direction, even if it is the smallest possible movement. For all other types of binary options, however, you have to predict the distance which the market can move. There is no better tool for this prediction than the ATR.
Let’s take a quick look at all binary options types and let’ see how the ATR can help you:
 One touch options. One touch options define a target price. You have to predict whether the market will move in the right direction and whether it can reach the target price. If it touches the target price, you immediately win your option and get a higher payout than with a high/low option. The ATR can turn a high/low prediction into a one touch prediction by predicting the range of the movement.
 Ladder options. Ladder options work just like high/low options but use a price other than the current market price as their point of reference. With this system, you can get payouts of up to 1,500 percent. The ATR helps you to predict whether the market has enough power to reach these target prices.
 Boundary options. Boundary options define a price channel around the current market price. You win your option when the market leaves this price channel. They work just like a ladder option with two target prices in identical distance of the current market price. The ATR can help you predict whether the market can leave the price channel without requiring an additional prediction. This is the only trading style that allows you to win your option without having to predict the direction in which the market will move – thanks to the ATR.
As you can see from this list, the ATR can help many trades to improve their predictions. Nonetheless, the ATR also has some limitation. Let’s take a closer look at them.
Which Limitations Does The ATR Have?
The ATR can do a lot for you. Like all other indicators, it has limitations, though. When you use the ATR it is important to know these limitations and consider them in your trading. Let’s look at these limitations:
 Range does not equal direction. Even if the ATR has a high value, the market might be unable to move far. When the market lacks direction, alternating upwards and downwards periods might keep the market in position.
 Market environments change. The ATR can only tell you what happened in the recent past. The future might be different, though. Important news can create volatility; the ending trading day can slow things down. In these scenarios, the ATR might not accurately reflect the market’s current reach.
These limitations mean that you are unable to afford to become lazy. Keep an eye on the market, and you should be able to get good predictions from the ATR. In the next part of this article, we present three strategies that can deal with the ATR’s limitations.
3 Examples Trading Strategies Using The Average True Range (ATR)
Let’s take a look at three strategies based on the ATR.
1. Trading boundary options solely based on the ATR
Because boundary options do not require you to predict the direction in which the market will move but only the distance, the ATR is the perfect tool for this type of trading.
All you have to do is compare the ATR’s value to the distance between the boundary option’s target prices and the current market price. Since both target prices are in equal distance from the current market price, this calculation is simple.
For example, assume that you are looking at an asset with a current market price of £100 in a 10minute price chart. The ATR’s reading is 0.2, and your broker offers you a boundary option with an expiry of one hour and target prices that are £0.5 from the current market price.
Would this boundary option be a good investment? Here’s how you can answer this question:
 Calculate the number of periods until your option expires. Your option expires in one hour, and you are looking at a 10minute chart. This means that there will be six new periods before your option expires.
 Calculate the market’s maximum reach. The ATR has a value of 0.2. If all six periods before your option expires were pointed in the same direction, the maximum movement would be £1.2.
 Compare the maximum movement to the distance between market price and both target prices. The target prices are £0.5 from the current market price; the maximum reach is £1.2. As we pointed out, you will almost never get a situation in which all periods point in the same direction. But when the maximum movement is 1.4 times as high as the distance between market price and both target prices, there is a very high chance that you will win your option. In this example, most traders would invest.
To simplify comparing the maximum movement to the distance between market price and both target prices, you can use two tricks:
 Define a minimum ratio. Some traders want the maximum movement to exceed the distance between market price and both target price by a fixed factor. With a ratio of 0.5, for example, the maximum movement would have to be at least 1.0 when the distance between market price and both target prices is 0.5. When maximum movement is bigger than 1.0, these traders will If it is smaller, they will stay out of the market.
 Use an indicator to define the ratio. Some indicators measure the market’s strength of direction. The Average Directional Movement Index (ADX), for example, returns a value between 100 (perfect strength of direction) and 0 (no sense of direction). When you divide this value by 100, it provides you with the perfect factor for your strategy. When both target prices are at a distance of 0.5 from the current market price and the ADX reads 0.2, for example, you would only invest when the maximum movement is bigger than 2.5 (0.5 ÷ 0.2 = 2.5).
There are other indicators that can work similarly well as the ADX. The important point is that you use a predefined strategy and not your feelings.
2. Using the ATR to decide whether you trade a high/low option or a one touch option
One touch options and high/low options both have unique advantages. The ATR can help you to decide which type of binary option is right for the current market environment.
 High/low options can win you a trade with the smallest possible movement. But they require you to precisely predict when your prediction will come true. If your prediction comes true too early, you might lose your trade anyway. Additionally, high/low options offer lower payouts than one touch options.
 One touch options allow you to win a trade as long as your prediction comes true at any time before your option expires. They also offer higher payouts than high/low options. But they require a stronger movement.
To know whether the current market is better suited for a high/low option or a boundary option, you have to know whether the market has the power to reach the far away target price of a one touch option. If it has enough energy, it is always better to trade a one touch option because you get a higher payout and the timing is less complicated.
We already explained how to make this prediction with the ATR in the last example. This strategy works in the same way. You predict whether the market will rise or fall, then compare the maximum reach to the distance between the market price and the target price of your one touch option based on a predefined ratio or the ADX.
 If the target price is within range, take the higher payout and invest in a one touch option.
 If the target price is out of range, play it safe and invest in a high/low option.
The way in which you create signals is up to you. You can use this technique to enhance your current strategy.
3. Using the ATR to invest in a ladder option
This strategy is another variation of the ATR in combination with the ADX. Ladder options are a mix of one touch options and high/low options. They offer you five or six target prices, and you can predict whether the price of an asset will be higher or lower than these target prices.
When you predict that the market will trade beyond a faraway target price, you get a high payout. When you predict that the market will trade closer than this target price, you will get a low payout. In this way, ladder options offer you all options, from very secure predictions to highly risky predictions.
Assume for example, than an asset is currently trading for £100. A ladder option offers you a target price of £101 and an expiry of one hour. Now you can predict that the market will gain 1 percent over the next hour – which rarely happens. Consequently, you would get a high payout, somewhere between 500 and 1,500 percent.
You can also predict that the market will trade below £100 in an hour. This is a much more likely prediction, which will result in a lower payout of 20 to 50 percent.
The ATR can help you to predict which prediction you should make. Of course, it would be great to get a payout of 1,500 percent, but if there is no chance that the market will trade above the target price when your option expires, there is no sense in wasting money. It would be better to win the lower payout than to lose the trade.
To predict whether the market can reach the target price, follow these three steps:
 Use a chart that matches your expiry, check the ATR. In our example, the option has an expiry of 60 minutes. Consequently, you would use a one hour chart. Now compare the ATR’s current value to the distance between the market price and the target price of your one touch option. If the ATR’s value is smaller, you can stop right there. The market is highly unlikely to reach the target price, and you are better off investing in the low prediction.
 If the ATR’s reading is bigger than the distance between market price and target price, switch to a shorter time frame and check the ADX. If the ATR indicates that the market could have enough energy to reach the target price, you have to get more accurate. In our example, you would switch to a tenminute chart and repeat the process that we laid out in our first example. The difference is that you should discount the maximum range more. After all, the market has to remain above the target price, not just reach it. The ADX should diagnose a strong sense of direction for this prediction to be likely, and the ATR should leave enough room for shortterm fluctuations.
 Invest according to your prediction. If the ATR and the ADX indicate that the market has a chance of trading above the target price when your option expires, invest in a high ladder option. The high payout means that you can afford to win a lower percentage of your trades, so you can take a few changes. But avoid too risky predictions. Experience will help you find the right balance. If you are unsure, stay out of the market.
Live Chart For Alphabet, Including ATR Indicator Beneath:
Conclusion
These three strategies show how the ATR can enhance your strategy by allowing you to trade investments with a higher payout. Without improving anything else, you can make more money and become a more successful trader.
The important point is to use the ATR to calculate the realistic reach of the market and then discount this value in a realistic way. Also keep an eye out for fundamental influences such as the release of big news or the end of trading day, which can alter the market environment significantly and render the ATR’s value obsolete.

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