BSE shares climbed 3% to Rs 3,430 after a SEBI committee decided to retain the current 30-minute VWAP settlement method for derivatives. This decision brings stability to the market, addressing concerns about potential volatility if the settlement process had shifted to a closing auction session. The current system will remain in place for at least another year while the regulator monitors market impact.
BSE shares saw a positive reaction on Thursday, rising approximately 3% to trade around Rs 3,430, following reports that the Securities and Exchange Board of India (SEBI) will maintain the existing settlement process for index and stock derivatives. The decision came from SEBI’s Secondary Market Advisory Committee (SMAC), which has chosen not to shift to a new blended settlement mechanism for now.
The current settlement system calculates the final price using a volume-weighted average price (VWAP) for trades executed between 3:00 pm and 3:30 pm. This method is designed to smooth out price swings that can occur at the end of the trading day. The committee’s recommendation to stick with this system for at least one more year provides predictability for brokers, traders, and institutional investors who operate in the derivatives segment.
Market participants had raised concerns that moving to a new closing auction session mechanism could increase volatility, particularly on expiry days when trading volume is typically higher. By deciding to continue with the current VWAP-based approach, the regulator has prioritized stability over aligning India’s settlement process with certain international models that use different auction-based pricing. This decision is particularly relevant for exchange operators like BSE, which is currently the only listed stock exchange in India. While NSE also functions as a major exchange, it is not listed, meaning the direct investor impact of such regulatory decisions is most visible in BSE's stock performance.
For investors, this decision removes the immediate uncertainty surrounding changes to trading mechanics. The regulator plans to keep monitoring the market's behavior over the coming year before considering any further adjustments to the settlement framework. The key monitorable for the industry will remain how the current mechanism handles high-volume periods, as this will influence any future regulatory decisions regarding the transition to alternative price-setting models. Investors may continue to track the regulator’s official circulars and any further commentary from the advisory committee regarding their observations on market stability.