Stock market is a place where can do the transactions both buyers and sellers at one single platform with transperantly and high liquidity. In India we have two well knowned markets are there one is SENSEX is Bombay Stock Excgange , NIFTY known as National Stock Exchange. We have two types of market Primary market and Secondary markets. Through IPO inverters will get shares through IPO later the traders and investrs will trade in secondary markets themselves.