Historical Futures Prices: SGX SGX Nifty Index Futures, January 2016 (INF2016), January 2016. The CNX Nifty Index is compiled by the India Index Services & Products Ltd. (IISL), a joint venture between the National Stock Exchange of India Ltd. (NSE) and CRISIL Ltd. (formerly the Credit Rating Information Services of India Limited). The CNX Nifty Index is a well diversified market capitalisation weighted index comprising 50 large and highly liquid securities traded on the NSE. The Nifty stocks represent about 58% of the Free Float Market Capitalization as of Jan 2013. Contract Size: US$2 x SGX CNX Nifty Index Futures price. Minimum Price Fluctuation: 0.5 index point (US$1). Settlement Basis: Cash Settlement. The Final Settlement Price shall be the official closing price of the CNX Nifty Index, which is derived based on the average weighted prices of the individual component stocks of the index during the last 30 minutes of trading. The official closing price will be rounded to two decimal places.