Effect of equity derivative contract size increase on Sep/Oct 2015

#1
Recently sebi increased the equity derivatives contract from 2 lakhs to 5 lakhshttp://www.livemint.com/Money/Zz65020ix04GxGno5Fb3xI/Sebi-raises-equity-derivatives-contract-size-to-Rs5-lakh.html in order to "safeguard the interest of retail investors" and some fellow also started a petition against ithttps://www.change.org/p/sebi-review-decision-on-increasing-minimum-contract-size-in-equity-derivative-segment. Its more than six months and I want to check the effect of this margin increase and how it "safeguarded retail investor".

I randomly chose three equtiy futures SBIN, CIPLA and IDFC; then downloaded its historicla data. I plotted two years of equity future contracts No of contracts and Open interest against the Date and this is the result.



SBIN Open interest


SBIN No of contracts


CIPLA Open interest


CIPLA No of contracts


IDFC Open interest


IDFC No of contracts


I am not a statistician so I cant interpret the data properly but the only thing I can see is that there is only a slight decrease in the No of contracts and open interest from sep/oct 2015. The slight decrease is possibly due to the decrease in retail investors.

Conclusion

SEBI safeguarded the rich to become richer :):p

I also welcome your interpretation of the data.
 

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