New Delhi, Nov. 7 -- The National Stock Exchange (NSE) is set to overhaul Closing Auction Session (CAS) in the equity cash segment and trading modalities from December 7, announced the exchange on Friday, November 6. NSE has announced a set of changes to the closing price discovery process in the equity cash segment and trading modalities in the equity derivatives segment.

In its two separate circulars, NSE issued details of rules overhaul. The development has come days after the Securities and Exchange Board of India (SEBI) reviewed the Closing Auction Session, market timings and settlement methodology for derivatives contracts.

The CAS duration will be shortened to 10 minutes. Additionally, the methodology for determining closing pric...