Stock Market is a place where traders do buy and sales of stocks through brokers. SEBI is regulator for benefits of people and to control overall companies and brokers. when company first time introduced in stock market it brings public issue known as Initial Public Offer. NSE and BSE are two major exchanges in India out of which NSE is more popular. Sensex represents top 30 companies of BSE and Nifty represents top 50 companies of NSE. Shareholder can benefit to get dividends if management of company decides and shareholder can’s ask for refund after doing investment