CAS sends Nifty soaring 300 points in a minute to breach 23,000 on expiry day

Nifty surged more than 300 points in less than a minute during Tuesday’s closing auction session, briefly crossing 23,000 before paring gains. The sharp swings have renewed concerns over CAS volatility on expiry days, even as Sebi considers changes to derivatives settlement rules. Jefferies sees signs of recovery in options volumes.