“Autocorrelation, also known as serial correlation, is the cross-correlation of a signal with itself. Informally, it is the similarity between observations as a function of the time lag between them” – Wikipedia. Autocorrelation value ranges from +1 to -1. Where autocorrelation above zero indicates a positive correlation and a negative value indicates a negative correlation.

Theoretically speaking, Positive Correlation means the time series is trending in the direction of its lagged time series and generally suits for trend trading. whereas the negative correlation mean the time series is mean reverting against the direction of lagged time series and generally suits for mean reversion trading. And if the auto-correlation value of zero represents random movements in stock price.

**Nifty Spot Daily Charts – Tradingview**

**Nifty Futures Daily Charts – Amibroker**

The code snippets for Amibroker and Tradingview have given below

**Autocorrelation – Pinescript Code (Tradingview)**

```
// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © marketcalls_in
//@version=4
study("Autocorrelation - Marketcalls")
len=input(10, minval=1,maxval = 50)
Dayreturn=roc(close,1)
autocorr = correlation(Dayreturn,Dayreturn[1],len)
plot(autocorr, color = color.green , style = plot.style_line , linewidth = 2,title = "Autocorrelation")
hline(0, title='hline1', color=color.red, linestyle=hline.style_dotted, linewidth=2)
```

You can also access the autocorrelation at tradingview public library

**Autocorrelation – AFL Code (Amibroker)**

```
_SECTION_BEGIN("Auto correlation");
Dayreturn=ROC(C,1);
AC = Optimize("AC",10,1,50,1);
AutoCor=Correlation(Dayreturn,Ref(Dayreturn,-1),AC);
Plot(AutoCor,"AutoCorrelation",colorRed);
Plot(0,"",colorGreen,style = styleDots);
_SECTION_END();
```

Hi Rajendran,

Thanks for taking the lead and sharing such wonderful trading knowledge. You not only have a very generous heart but also from what i have seen you are at the fore front of experimentation vis a vis applying new statistical concepts to trading.. Keep up the great work..

Sai

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Hi Mr Rajendiran, I got zero lag macd codes from some where but it is not working in mt4 I need your help to make it work in mt4 please