# What is Average True Range?

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#1
17th February 2006, 11:07 AM
 Member Join Date: Aug 2005 Location: PUNE Posts: 461 Thanks: 11 Thanked 69 Times in 21 Posts
What is Average True Range?

hello,

I read that while selecting a stop loss level, the stop loss should not be too tight so as the wipsawing mrkt will trigger it. One should use at least One "Average True Range" can some one guide me how do we calculate "Average True Range" (if possible using an example)

Regards
Sanjay
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#2
17th February 2006, 12:26 PM
 Member Join Date: Dec 2004 Posts: 404 Thanks: 116 Thanked 104 Times in 50 Posts
Re: What is Average True Range?

Quote:
 Originally Posted by SGM hello, I read that while selecting a stop loss level, the stop loss should not be too tight so as the wipsawing mrkt will trigger it. One should use at least One "Average True Range" can some one guide me how do we calculate "Average True Range" (if possible using an example) Regards Sanjay
It is a function in Metastock and it can be manually calculated also. Check this link http://www.stockcharts.com/education...indic_ATR.html

Hope this helps

Alok
#3
17th February 2006, 01:19 PM
 Member Join Date: Mar 2004 Posts: 340 Thanks: 0 Thanked 54 Times in 18 Posts
Re: What is Average True Range?

Measuring Risk in the Markets with The Average True Range

Before placing any trade, you should know your risk point. We have all heard this many times over. Know your risk or it will ruin you. The big question is how do you determine risk. One of the easiest way to measure risk is to use the ATR.

What is the risk of any market on a given day? The answer to this question is not a difficult as it may seem. The risk on any given day is the range of the day. The range represents the amount that the market moved. The range can be in your favor, or against you. If you are long you want the range to be higher than the previous day. On some days there will be a large range and on some days there will be a small range. Markets very rarely have the exact same ranges over a period of days. If you look at the range as risk, then you can determine that risk is variable.

Using the range to set stops will keep you close to how the market is acting. If the range is large, then you will need to use a greater stop. A small range would show that the market is not moving that quickly and a smaller stop could be used. We have found that averaging the range out over a period of days gives us a picture as to how the market is acting most recently.

How to calculate the Average True Range (ATR)?

First you must calculate the True Range for the market.

The True Range is the maximum of yesterday’s range to today’s range. This can be found from three simple calculations; you will take the maximum of these numbers.

The distance from today’s high to today’s low
The distance from yesterday’s close to today’s high
The distance from yesterday’s close to today’s low

Here is an example:

Day Open High Low Close
(Yesterday) 215.5 217.5 215.5 216.5
(Today) 216.0 219.0 214.0 215.0

Checking the distance from yesterday’s high (217.5) to today’s low (214) yields 3.5 points.
Checking the distance from today’s high (219) to yesterday’s low (215.5) yields 3.5 points.
Checking the distance from today’s high (219) to today’s low (214) yields 5 points.

What does this measure tell us? It tells us the maximum distance that this market traveled over a 24-hour period. The maximum risk for this 24-hour period was 5 points in this particular market. This calculation is called the True Range.

We will average this result over a set period of days, 10 perhaps. We will assign more weight to most recent time period.

Example:

Day True Range Weighting Factor ATR Value
1 5.50 1.00 5.50
2 4.75 1.00 4.75
3 5.75 1.00 5.75
4 6.50 1.00 6.50
5 4.50 1.00 4.50
6 4.50 1.00 4.50
7 4.25 1.00 4.25
8 6.00 1.00 6.00
9 5.75 1.125 6.47
10 6.25 1.125 7.03
ATR 5.30 5.45

Using this method of figuring the value of the Average True Range we are favoring the last 20% of the sample period by assigning it a higher weighting factor. Typically one can use a 12.5% weighting factor to the last 20% of the sample period.

Why do we do this? Look at the example above. Just the average of the True Range is 5.30 points. The ATR Value is 5.45. Notice the progression of True Ranges over the sample period. The last two days that were sampled had a higher True Range than the previous days. The market was experiencing a higher degree of volatility over these two days. Since the ATR really measures risk, we would like to be aware of any sudden increases in risk for a market. Weighting the ATR gives you a better idea of what is happening now or the estimated risk for this market.

Normally traders will use a 2 times the ATR for their stop placement. In our example this would be a stop of (5.45 * 2) 10.9 points. This is done to give the market some room, to ensure that you are not stopped out too prematurely.

As your ATR value increases or decreases, you can move your stop accordingly. Some traders trail their ATR stop behind their position. They adjust their stop with each move in their favor and keep the stop the same for each move against them. The ultimate decision on how to use the ATR is up to you. However, you now know that the ATR is an invaluable resource for traders.
#4
17th February 2006, 03:48 PM
 Member Join Date: Mar 2005 Location: Kolkata Posts: 494 Thanks: 1 Thanked 6 Times in 5 Posts
Re: What is Average True Range?

Awesome!Truely Awesome!----maybe one of the best literatures(from practical point of view) available in the Net--
TATrader---From ur experience----in the Indian Scenerio,what weightage factor(exponential)---do u feel would be reasonable----1 being the maximum,0.1--0.4has been given in some literatures--while J.H. Wilder ---the creator of ATR---applied a different smoothering process---
Regards,
joy_mitali
#5
17th February 2006, 06:25 PM
 Member Join Date: Aug 2004 Posts: 122 Thanks: 0 Thanked 11 Times in 6 Posts
Re: What is Average True Range?

#6
19th February 2006, 06:16 PM
 Member Join Date: Aug 2005 Location: PUNE Posts: 461 Thanks: 11 Thanked 69 Times in 21 Posts
Re: What is Average True Range?

Thanks TATrader for the detailed reply. And thanks alokdaga for the URL.

http://www.stockcharts.com/education/

The site stockcharts seems to be a excellent resource for learning Definitions of the charting terms. As always the payback is more than 'just the answer' to the queston asked on Traderji...

As per the article on stockchart the ATR can be for 14 days, and I liked the method used to calculate, because of its simplicity.

(13 * ATR of last Trading Day or Session + Todays True Range) / 14

Regards
Sanjay

Last edited by SGM; 19th February 2006 at 06:29 PM.
#7
31st December 2008, 09:24 AM
 Member Join Date: Dec 2008 Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts
Re: What is Average True Range?

hello everybody

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