The National Stock Exchange (NSE) (Hindi: राष्ट्रीय शेयर बाज़ार Rashtriya Śhare Bāzaār) is a stock exchange located at Mumbai, India. It is the 16th largest stock exchange in the world by market capitalization and largest in India by daily turnover and number of trades, for both equities and derivative trading. NSE has a market capitalization of around US$985 billion and over 1,646 listings as of December 2011. Though a number of other exchanges exist, NSE and the Bombay Stock Exchange are the two most significant stock exchanges in India, and between them are responsible for the vast majority of share transactions. The NSE's key index is the S&P CNX Nifty, known as the NSE NIFTY (National Stock Exchange Fifty), an index of fifty major stocks weighted by market capitalisation.
NSE is mutually owned by a set of leading financial institutions, banks, insurance companies and other financial intermediaries in India but its ownership and management operate as separate entities. There are at least 2 foreign investors NYSE Euronext and Goldman Sachs who have taken a stake in the NSE. As of 2006, the NSE VSAT terminals, 2799 in total, cover more than 1500 cities across India. In 2011, NSE was the third largest stock exchange in the world in terms of the number of contracts (1221 million) traded in equity derivatives. It is the second fastest growing stock exchange in the world with a recorded growth of 16.6%.