Mumbai, Sept. 1 -- The National Stock Exchange of India recorded turnover of Rs 39,718 crore in its Closing Auction Session (CAS) on 31 August 2026, with a 99.9% market share, as the session saw heavy activity on the first index rebalancing day since CAS was introduced.

CAS accounted for 22% of NSE's total cash market turnover during the day. More than 98,000 unique investors participated in the session, while turnover was around 42 times the previous trading day's level.

The sharp increase in activity was driven by the MSCI August 2026 Index Review, which took effect at the close of trading on 31 August. Index rebalancing typically results in higher closing-session activity as index funds, exchange-traded funds and other passive invest...