A Stock market is a platform that provides the facility to trade a company stock .a stock may be bought or sold only if it is listed on an exchange .thus it is a meeting place for buyers and sellers .India’s stock exchanges are the NATIONAL STOCK EXCHANGE and BOMBAY STOCK EXCHANGE .stock markets are risky ,hence they have to be regulated to protect investors .The SEBI (SECURITIES AND EXCHANGE BOARD OF INDIA) is there to oversee the primary and secondary markets in india .They protect ,promote and regulate the stock market .