Sebi urged to boost participation in stock market closing auctions

India's securities regulator needs to prioritize measures aimed at increasing participation in closing auctions as part of broader efforts to enhance market quality and transparency. The closing auction mechanism, a critical component of equity market operations, serves as the final price discovery process for the trading day and establishes closing prices that are widely referenced across the financial industry.

Currently, participation levels in closing auctions remain below optimal thresholds, which can limit the effectiveness of price discovery and result in wider bid-ask spreads during the final trading session. Market participants and analysts have flagged this as an area requiring regulatory attention to ensure the auction mechanism functions as intended.

The Securities and Exchange Board of India (Sebi) could consider several approaches to boost engagement, including enhanced communication about auction mechanics, improved market infrastructure, and incentive structures that encourage broader participation among institutional and retail investors. Strengthening the closing auction would benefit market integrity by ensuring prices reflect a wider consensus among market participants.

Experts note that well-functioning closing auctions provide important reference points for fund valuations, index calculations, and overnight derivative pricing. Improving participation would reinforce these functions while also providing investors with better execution opportunities during the critical final moments of each trading day.