# How to Buy Shares - Calculating Average Directional Movement Using Excel - ADX Formula

## Average Directional Movement Indicator

If you plan to enter the business of trading shares or stocks for a living, then you are likely to come across Average Directional Movement (ADX). ADX has become a widely-used indicator by traders throughout the world. The Average Directional Index, ADX, was created in 1978 by J. Welles Wilder for determining the strength of a trend.

We start by defining an exponential moving average as a moving average with weighing factors which decreases exponentially, giving much more importance to recent prices while still not discarding older prices entirely. The exponential moving average is also called exponentially weighted moving average.

## Calculating Average Directional Movement Using Excel

Here are the steps you need to take to compute Welles Wilder’s Average Directional Movement (ADX) using excel.

- If you decide to use a 14-day period, then insert the numbers 1 to 14 in column “A”. You need the sum total of the fourteen numbers which you will get by using the formula “=Sum(A1:A14)” which is equal to 105.
- Insert the stock’s high, low, and closing prices in each of columns “B”, “C” and “D” respectively.
- Compute Up-Move by inserting “= (B1-B2)” in column “E”.
- Compute Down-Move by inserting “= (C1-C2)” in column “F”.
- Check if Up-Move is greater than Down-Move by inserting in column “G” the formula “=if(abs(E1)>abs(F1),1,-1)”
- Check if Up-Move is greater than 0 by inserting in column “H” the formula “=if(E1>0,1,-1)”
- Check if Down-Move is greater than 0 by inserting in column “I” the formula “=if(F1>0,-1,0)”
- Compute +DM by inserting in column “J” the formula “= if(G1+H1=2,E1,0)”
- Compute -DM by inserting in column “K” the formula “= if((G1+I1)=-2,F1,0)”

## True Range

Define “True-Range” as the largest of:

(a) Today's High - Today's Low

(b) Today's High - Yesterday's Close

(c) Yesterday's Close - Today's Low

10. Compute absolute (Today's High - Today's Low) by inserting in column “L” the formula “=abs(B1-C1)”

11. Compute absolute (Today's High - Yesterday's Close) by inserting in column “M” the formula “=abs(B1-D2)”

12. Compute absolute (Yesterday's Close - Today's Low) by inserting in column “N” the formula “=abs(D2-C1)”

13. Compute True-Range (TR) by inserting in column “O” the formula “=Max(L1:N1)”

## Exponential Moving Average

Next, compute the following:

14. Exponential moving average (+DM14) of +DM by inserting in column “P” the formula “=((14*J1+13*J2+12*J3+11*J4+10*J5+9*J6+8*J7+7*J8+6*J9+5*J10+4*J11+3*J12+2*J13+1*J14))/105”

15. Exponential moving average (-DM14) of -DM by inserting in column “Q” the formula “=((14*K1+13*K2+12*K3+11*K4+10*K5+9*K6+8*K7+7*K8+6*K9+5*K10+4*K11+3*K12+2*K13+1*K14))/105”

16. Exponential moving average (TR14) of TR by inserting in column “R” the formula “=((14*O1+13*O2+12*O3+11*O4+10*O5+9*O6+8*O7+7*O8+6*O9+5*O10+4*O11+3*O12+2*O13+1*O14))/105”

## Directional Indicators

Next, calculate the Directional Indicators as follows:

17. Directional Indicator (+DI14) = +DM14 divided by TR14 by inserting in column “S” the formula “=P1/R1”

18. Directional Indicator (-DI14) = -DM14 divided by TR14 by inserting in column “T” the formula “=Q1/R1”

Next, calculate the components of the Average Directional Movement Index (ADX)

19. Calculate the absolute DI Difference (+DI14 - -DI14) by inserting in column “U” the formula “=abs(S1-T1)”

20. Calculate DX = DI Difference divided by the sum of +DI14 and -DI14 by inserting in column “V” the formula “=U1/(sum(S1: T1))”

21. Calculate ADX = the exponential moving average of DX by inserting in column “W” the formula “=((14*V1+13*V2+12*V3+11*V4+10*V5+9*V6+8*V7+7*V8+6*V9+5*V10+4*V11+3*V12+2*V13+1*V14))/105”

## Draw or Insert a Chart Using Excel

Hold and drag your formulas from columns “E” to column “W” downward in as much as you would want to go into the past.

Now select column “S”, ”T” and “W” data and draw or insert a chart using Excel. You will now have The Directional Movement System as developed by Welles Wilder and as shown in the image below which you can use for entering and exiting your trades. Once you learn how to use Directional Movement System in excel then you can later manipulate it to your liking and the sky will be the limit to what you can do with it.

**Trades:**

Buy shares or go long the stocks when +DI is above -DI and at least one of the following has happened:

1. ADX rises while +DI and ADX are above -DI

2. ADX turns up from below +DI and –DI

Close or exit your positions when +DI crosses below -DI

Short stocks or trade in downside direction when -DI is above +DI and at least one of the following have happened:

1. ADX rises while -DI and ADX are above +DI

2. ADX turns up from below +DI and –DI

Close or exit your positions when -DI crosses below +DI

**Important**: Always use automatic stop-loss orders which should preferably be with your stockbroker.Average Directional Movement, ADX, does not indicate trend direction. ADX indicates only the trend strength. ADX is a lagging indicator and traders must be aware of this. It is only after a trend has established that ADX will generate a signal. Average Directional Movement, ADX, will range between 0 and 1. Values below 0.20 indicate a weak trend and values above 0.40 indicates a strong trend.

**© 2009 ngureco**

## Comments

Are you formulas based on the most decent data being at the top?

I've been looking through a few of your hubs and I am super impressed. I'm learning a ton by reading your stuff. I've been trying to get really good at Excel for a while now.

THANKS A LOT,

PLEASE SAVE EXCEL SHEET ALSO FOR DOLWLOADING

Very useful article for stock traders. Thanks!

I love trading patterns so I really enjoyed this hub.

Thanks ngureco!

my first reaction-the above tutorial provided an introduction to understanding ADM. Understanding what charts on a broker's site aim to do has been a problem. I believe this tutorial and perhaps other like this will meet that requirement. Many thanks.

I m searching Excelsheet for W.D. Gann Tracement in the same pettern.Can anybady provide.

informative

Great Post! Thanks for the tips.

excellent

What a great explaination on how to trade using the ADX. I will give the spead sheet a try.

Nice!

SOME ONE HAS TO UNDERSTAND MATHS VERY WELL!

nice hub

it is a nice hub , Thanks ?

Ngureco, I'll get this one day! Thanks for the helpful hub, even if I haven't grasped it all yet.

A nice piece of information.

thank you it is useful.

Great site. Thanks for the info.

thanks for this wonderful piece of information

very god descption with mathematical calculations.

You may also like to visit some of mine about stock market.

Thanks

Jyoti Kothari

It is so complicated to learn but it is good information. Thanks for sharing.

Very nice to know.

Thanks for your time, always good read

This is cool. Can you give a downloadable example of the Excel sheet that you are building in this tutorial?

I created an automated trading system that was based on the ADX. Orders are placed when the +Di and -Di line reach a certain difference in value, and the position is placed according to what line is on top. J Welles Wilder also recommended in his book that the PSAR be used with the ADX to determine when to exit the market. I experimented with a 28 day period, mixed results.

This is definitely a cut above the usual stock hubs. Thanks very much ngureco.

good idea

Great insight into penny stock. Info will assist novice interested in jumping into stock market investing. Thanks.

Thanks for the nice hub.

Wow, very technical hub. For those looking to take over their own investments understanding these formulas is essential.

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