Sensex plunged over 2,000 points during Thursdays closing auction session before recovering some losses, while Nifty remained comparatively stable. Market experts attributed the sharp divergence largely to thin trading volumes on BSE. The episode has renewed scrutiny of the new CAS mechanism, particularly around monthly expiry and its impact on price discovery.

The Indian stock market ended higher on Tuesday after a volatile session, with Sensex gaining 287 points and Nifty rising 115 points. Pharma, PSU banks and consumer durables led…

Indian equities fell sharply on Thursday, erasing gains during the first monthly expiry under the new closing auction session. Sensex dropped 539 points, or 0.7%, while Nifty…

MUMBAI: In the first monthly expiry of derivatives contracts on BSE after the introduction of Closing Auction Session, popularly known as CAS, sensex and Bankex, BSE’s banking…

Bankex options saw a significant surge during Thursday's expiry session. This unusual spike occurred within minutes, causing considerable trader reaction. Indicative closing…

A sudden 3% plunge in the BSE Sensex during a closing auction raises concerns over liquidity and potential market manipulation.