How securities are traded

The involvement of retail investors in capital market has increased significantly. While many of them invest in market passively through mutual funds, there are quite a few who either invest using demat account or get help of the broker for investment. Many might wonder how shares come to their account and money is deducted online? Why the exchange trading in India is termed as T+2? And what do clearing and settlement means?

The whole trading starts with decision to trade, when the investor looks for some script and place order for that. If the order matches with the counter order placed by some other investor, it gets executed. Once the order gets executed, on the next day it goes to the clearing house where all trades are confirmed. Which is shown in the diagram at T+1 days. Then these cleared trades get settled, where pay-in & pay-out of all the securities and funds takes place. This settlement takes place on T+2 days. Such settlement is called rolling settlement.

In India, rolling settlement was first introduced by Over the counter exchange of India (OTCEI). In the year 2000, SEBI made rolling settlement compulsory for 10 selected securities which had volume more than Rs 1 crore. With time by December 2001, other stocks were also included for rolling settlement. SEBI introduced T+5 rolling settlement in equity market from July 2001, which was subsequently shortened to T+3 from April, 2002. To reduce the risks in settlement like counterparty risk and system risk, SEBI mandated rolling settlement of T+2 days for all the scripts from April 1, 2003.