The Securities and Exchange Board of India (SEBI) is proposing significant changes to the Closing Auction Session (CAS) for derivatives settlement, aimed at addressing volatility and improving the price discovery process. However, initial feedback from market players indicates a preference for the traditional volume-weighted average price (VWAP) method, raising questions about the efficacy of the new proposals.
Proposed Changes to Settlement Methodology
SEBI has outlined two primary options for the settlement of index and single-stock derivatives on expiry days. The first option suggests an immediate shift to a blended VWAP, which would integrate trades from the last 30 minutes of continuous trading with the 10-minute CAS. The second option proposes a transitional approach, where the pre-CAS method using only the last 30 minutes of continuous trading would be retained for at least a year before any shift to the blended methodology.
Feroze Azeez, Joint CEO at Anand Rathi Wealth, believes the removal of indicative index values during the auction could significantly reduce market distortions. He noted that prior indicative prices had led to unusual volatility, with the Sensex indicative levels fluctuating dramatically without actual trades taking place, which undermines market integrity. Azeez argues that by making orders beyond a 1 percent band more binding, the potential for manipulative practices would be diminished.
Market Reactions and Concerns
Despite the proposed operational changes, many market participants remain hesitant about fully adopting the CAS for derivatives settlement. Critics argue that the blended VWAP adds unnecessary complexity, as it would depend on two different trading mechanisms, potentially creating confusion during settlements. Uttam Bagri, director at BCB Brokerage, advocates for retaining the last 30-minute VWAP, coupled with extending cash market trading hours to 3:30 PM, followed by the auction session and a five-minute derivatives window. He believes this would maintain simplicity while providing greater transparency.
Supporting this sentiment, Trivesh Dinesh, COO at Tradejini, emphasized the importance of having a settlement methodology that is straightforward and comprehensible for all participants. Additionally, trader and sub-broker forums have rallied around the VWAP approach due to its established user base and simpler mechanics. Anand James, chief market strategist at Geojit Investments, pointed out that the current situation reflects the necessity for improved volumes in CAS, which could support the sentiment for change in the long run.
Implications for Indian Markets
The potential changes in the settlement methodology are critical considering the volatility that can arise from derivatives trading, especially on expiry days. Simplifying the settlement process may facilitate better market stability and encourage broader participation from retail investors. If a more straightforward method such as the traditional VWAP is retained, it could maintain confidence among market players and reduce the risk of manipulation and undesired volatility.
Moreover, the discourse surrounding the auction process reflects a growing need to effective implement change in ways that ensure both efficiency and transparency. The push for longer trading hours could also improve liquidity in the market, thereby creating more optimal trading conditions. Overall, the implications of these proposed changes are significant, as they could reshape how derivatives trading is approached in India.
Frequently Asked Questions
What is the Closing Auction Session (CAS)?
The CAS is a designated period at the end of trading where buy and sell orders are matched to determine the settlement price of derivatives. It is meant to facilitate price discovery and minimize volatility during the settlement process.
What are the proposed changes by SEBI regarding derivatives settlement?
SEBI has proposed two options: a shift to a blended VWAP that uses trades from the last 30 minutes of trading and the 10-minute CAS, or a continuation of the existing method for at least a year before considering changes.
Why are market participants concerned about the blended VWAP method?
Many market participants feel that the blended VWAP introduces unnecessary complexity, making settlement more complicated as it combines two different trading mechanisms. They prefer the simplicity of using the last 30-minute VWAP.
What is the significance of extending cash market trading hours?
Extending cash market hours to 3:30 PM could provide more trading opportunities and potentially enhance liquidity, leading to better price discovery and a more stable market environment.







