We recently decided to see how correlated the S&P Nifty is with Dow Jones (US index) and if they were becoming more or less correlated in recent years. The below chart shows the 20 day correlation between S&P Nifty Index and Dow Jones Index. From the charts one can see that during Mid of May the correlation achieves its peak value(0.93) and from there correlation starts dropping which indicates that S&P Nifty will decouple slowly from Dow Jones Market movements in the upcoming days.

**Investopedia** Says,

“Correlation is computed into what is known as the correlation coefficient, which ranges between -1 and +1. Perfect positive correlation (a correlation co-efficient of +1) implies that as one security moves, either up or down, the other security will move in lockstep, in the same direction. Alternatively, perfect negative correlation means that if one security moves in either direction the security that is perfectly negatively correlated will move in the opposite direction. If the correlation is 0, the movements of the securities are said to have no correlation; they are completely random.”

## Historical Correlation between Nifty and Dow Jones

**How to Apply Historical Correlation AFL code in Amibroker**

1.Download Historical Correlaion AFL code

2.Unzip and Copy the file to c:program filesamibrokerformulasindicators folder

3.Open **Amibroker** and Open a **New Blank Chart**

4.goto **Charts->Basic Charts->Price** indicator. Now Drag and Drop to the Blank Chart

5.goto **Charts->Indicators->Historical Correlation**. Double Click on the indicator

6.Right Click over the Historical Correlation Panel and Enter the symbol name which needs to be checked for correlation with main symbol on the charts

7.Press OK to see the Historical Correlation plotted below the price chart

Dear raj…

NOT SHOW….HISTORICAL COLL…

@Kalyan

Make Sure you had done with all the above mentioned procedure. Do you added the correlation symbol in the parameters section as mentioned above?

Dear rajandran sir,

can u tell what afl or stratergy u yourself use to trade

preyank

how to set parameters..no. of days for which correlation has to be computed?

Thank you very much i was looking for this.

Is it possible to have a drop down list instead of having to type in each symbol?

Thanks very much for sharing. I have used and adapted several pieces of your code for my own use. Your code is very understandable! I realize it takes time and effort to share!!!! Dave.