SEBI’s Closing Auction: Mutual Funds Surge to 25% Trading Volume
By Market Desk
SEBI’s new Closing Auction Session boosts mutual fund participation to 25% of trading volumes, enhancing price discovery in Indian stock markets.
The Securities and Exchange Board of India (SEBI) launched a new Closing Auction Session (CAS) on August 3rd, significantly increasing institutional investor engagement. Mutual funds now contribute nearly 25% of the total trading volumes in this session, marking a substantial rise.
This new system represents a major shift in how closing prices are determined for stocks eligible for Futures & Options (F&O) trading. The move aims to enhance transparency in price discovery across the Indian stock market.
Understanding the Shift to Auction-Based Closing
Previously, the Indian stock market calculated closing prices using the Volume Weighted Average Price (VWAP) from the last 30 minutes of trading. This method faced criticism for its vulnerability to last-minute price fluctuations.
SEBI replaced the VWAP with a formal auction window to foster more transparent and equitable price discovery. While institutional investors, including mutual funds, have rapidly adapted, retail participation remains lower as individual investors adjust.
- CAS launch date: August 3rd
- Current mutual fund participation: Nearly 25% of trading volumes
- Initial mutual fund participation: 5% to 7%
Addressing Initial Market Challenges and Regulator Response
The implementation of the CAS initially encountered difficulties, as many traders and automated trading systems struggled to align with the new auction format. This led to instances of unusual price divergence between indices like Nifty and Sensex and individual stocks.
SEBI Chairman Tuhin Kanta Pandey addressed these concerns, confirming that the regulator is closely monitoring the activity. He found no evidence of market manipulation, attributing initial instability to the technical recalibration of trading algorithms.
SEBI has emphasized that the auction process includes mandatory display of indicative prices, ensuring the system’s transparency. Major brokerage platforms have since updated their systems to display these indicative prices during the auction window, aiding traders in making informed decisions.
As the market continues to adapt, the auction process allows for a more controlled price discovery. The market is anticipated to stabilize as trading algorithms are fully updated and liquidity in the auction session improves.