CAS chaos: How did Sensex crash 2,000 points in 6 minutes while Nifty stayed stable on monthly expiry?

Sensex plunged over 2,000 points during Thursday’s 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, par…