MSCI rejig drives volumes in India stocks amid closing auction-led swings

According to Business Recorder, a quarterly MSCI rebalance pushed roughly $4.1 billion of trades through the closing auction on India's National Stock Exchange on Monday. The exchange said turnover was close to 40 times its average since the mechanism went live earlier this month, equalling 21% of cash-market volume. Lasting about 20 minutes, the auction matches buy and sell orders to fix each stock's official close, a method that markets such as China, Taiwan, Hong Kong and South Korea also employ.

The rebalance, effective from 1 September, prompted heavier participation in the auction and sharp price swings in individual shares, traders said. Laurus Labs, Lenskart, Adani Energy Solutions and Groww entered the MSCI benchmark, while Balkrishna Industries, SBI Cards and Astral were dropped from it, and Reliance Industries' weighting was trimmed as Eternal's was lifted. Reliance settled 0.8% lower after its indicative price slid 1.6% during the auction, while Adani Energy Solutions dropped 10.4%.

Trader commentary described the flows as expected, with turbulence limited to a handful of shares as is typical. On the previous Thursday, the Sensex's indicative close showed a 3.3% drop at one point during monthly derivatives expiry, before the index finished 0.7% lower. The auction currently covers only stocks with futures and options, which kept moves in Lenskart and Groww muted.