BSE Bombay Stock Exchange is the oldest exchange in India. BSE was established in the year 1875 by Premchand Roychand. In 1957 the Bombay Stock Exchange was recognized by the Government of India under the Securities Contracts Regulation Act. In 1986 BSE introduced its first benchmark S&P BSE Sensex index. The S&P BSE Sensex index is used as a benchmark for measuring the overall performance of the stock exchange. In 1995, BSE adopted a fully electronic trading system which was developed by CMC Limited. In 2000, BSE introduced its derivatives market with the S&P BSE SENSEX futures contracts. In 2012 the Bombay Stock Exchange partnered and became a partner exchange under the United Nations Sustainable Stock Exchanges Initiative.