Everything seemed normal on Dalal Street as the stock market opened on Thursday, August 13. Both Sensex and Nifty extended losses from the previous session even as oil prices eased, with traders bracing for some expiry-day volatility. However, a sharp divergence emerged between the benchmark indices by the end of the session, with the market regulator raising eyebrows over unusual spikes seen in Sensex in a matter of few seconds.
Sensex closed 114 points higher but Nifty ended in the red following the closing auction session (CAS) on August 13. Abnormal spikes in the indicative equilibrium price of Sensex during the CAS were noticed by the surveillance teams of Sebi. The reference price of Sensex was 77,829.60 at 3.15 pm, while the CAS-discovered closing price stood at around 78,080.
