NSE Pre - Open Market is a 15-minute trading session that takes place from 9:00 am to 9:15 am. Smartly Trade for 15 minutes before the regular market opens at 5paisa. NSE India (National Stock Exchange) - LIVE stock/share market updates from one of the leading stock exchange. Current stock/share market news, real-time information to investors on NSE SENSEX, Nifty, stock quotes, indices, derivatives. The Pre Open Market is the period of trading activity that occurs before the regular market session. Investors and traders analyse the pre - market trading activity to judge direction stock market .