Stock trading is a business that is carried out with knowledge and disciplines. Here buyer and seller compete in one particular queue called stock window.Trading is carried out by brokers on behalf of their client traders. Trade is carried out by creating long position or short position based on the market trends. If buy and selling is carried out in a same day it is called as intraday trade. The primary requisite to trade in stock exchange is a Demat a/c and trading a/c opened with the help of a brokers. Brokers are responsible for client’s action.