The National Stock Exchange (NSE), located in Bombay, is India's first debt market. It was set up in 1993 to encouragestock exchange reform through system modernization and competition. It opened for trading in mid-1994. It was recently accorded recognition as a stock exchange by the Department of Company Affairs. The instruments traded are, treasury bills, government security and bonds issued by public sector companies.

The National Stock Exchange of India Limited has genesis in the report of the High Powered Study Group on Establishment of New Stock Exchanges, which recommended promotion of a National Stock Exchange by financial institutions (FIs) to provide access to investors from all across the country on an equal footing. Based on the recommendations, NSE was promoted by leading Financial Institutions at the behest of the Government of India and was incorporated in November 1992 as a tax-paying company unlike other stock exchanges in the country.

1. India Index Services & Products Ltd. (IISL)
2. National Securities Clearing Corporation Ltd. (NSCCL)
3. NSE.IT Ltd.
4. National Securities Depository Ltd. (NSDL)
5. DotEx International Limited