Sensex opens higher as Nifty falls after Monday rally

Indian benchmark stock indices opened higher on Tuesday, August 4, following a significant rally the previous day that was driven by a new market mechanism and favorable global conditions. The BSE Sensex rose 141 points to 78,781 in early trade, while the NSE Nifty was down 150 points at 24,622, reflecting a divergence that analysts attributed to the market normalizing after Monday's unusual closing session.

On Monday, August 3, the markets extended a winning streak to a fourth consecutive session, with the Sensex closing 0.70% higher at 78,639.03 and the Nifty surging 1.60% to 24,774.30. A substantial portion of the Nifty's gain, nearly 200 points, occurred in the final minutes following the debut of the Closing Auction Session (CAS). This new framework, implemented by the National Stock Exchange under guidance from the Securities and Exchange Board of India (SEBI), concentrates end-of-day order execution into a dedicated 20-minute window to promote transparency and price discovery. The exchange reported strong participation on its first day, with 515 trading members placing orders.

Market experts described the sharp spike in the Nifty relative to the Sensex as an aberration...