The Opening Price is the price at which a security first trades when the market opens for the trading day. On Indian exchanges like NSE and BSE, the opening price is determined through a pre-opening session call auction between 9:00 AM and 9:15 AM, where buy and sell orders are matched to establish an equilibrium price. The opening price may differ significantly from the previous day's closing price due to overnight news, global market movements, or corporate announcements, making it a key reference point for intraday traders.