S&P Cnx Nifty

The leading stock index of large companies on the National Stock Exchange of India is the S&P CNX Nifty, nicknamed Nifty 50 or Nifty. The NSE 50 Nifty represents 22 sectors of the economy and contains 50 diverse stocks. Some of its purposes include benchmarking fund portfolios, index based derivatives and index funds.

Managed by India Index Services and Products, who have a consulting and licensing agreement with Standard and Poor's, they are the first specialised company focused on the index as a core product in India. A weighted average is used to calculate the index so changes in the share prices of larger companies have a larger effect.