I have read this information here, About NSE section.
http://www.nseindia.com/content/ncfm/NIFM_PGP_Weekend_pros.pdf
Is this true, that NSE is world's 3rd largest stock exchange? If so, in what category.
I checked on Market Cap and Daily volumes, it is not even close to top 3 exchanges.
Edit:
I found this press release which says
http://www.nseindia.com/content/press/prs_attn_nsesh.htm
It is India's largest exchange and ranks third globally by number of trades in the equities market.
In this short span of time, NSE has become the largest exchange in single stock futures and ranks fourth in index futures globally.