Nithin Kamath Unravels the Inevitable Distortions Behind the New Closing Auction’s Impact on Indian Stock Volatility.
Nithin Kamath, co-founder of Zerodha, has identified significant structural challenges in the Indian equity markets, emphasizing that the recent volatility associated with the newly implemented Closing Auction Session (CAS) reflects deeper issues rather than flaws in the auction mechanism itself. His observations coincide with concerns from traders and algorithmic desks who are grappling with unpredictable price movements during the newly shortened 20-minute auction window. This abrupt shift from the traditional 30-minute volume-weighted average price (VWAP) method aims to establish a single final price but has inadvertently led to severe losses for intraday trading strategies, prompting discussions on the necessity for either adjustments or a temporary rollback of the system.
Kamath juxtaposes the functioning of CAS against more mature financial markets where passive investors rely on closing auctions to execute substantial trades without causing significant price fluctuations. The absence of a robust two-sided liquidity structure and a diverse participant base in India has raised concerns about the effectiveness of such mechanisms. Unlike developed markets where arbitrageurs quickly correct price discrepancies across various instruments, Indian market designs hinder this process due to high transaction frictions. The operational difficulties in employing the Securities Lending and Borrowing mechanism, coupled with high costs associated with trading futures—heightened by recent tax changes—further exacerbate this issue, leading to a natural upward bias in cash markets.
Despite India boasting over 130 million registered investor accounts, Kamath highlights that only a small fraction—20 to 30 lakh—actively trade on any given day, resulting in a limited capacity to absorb erratic institutional flows during crucial time frames like the market close. This thin trading volume exacerbates the sharpness of price swings observed in the CAS and reflects the urgent need for systemic reforms. Kamath advocates for enhanced market-making practices, easier access to shorting stocks, and a reevaluation of tax structures governing different derivatives to facilitate smoother market operations and encourage genuine participation.
In conclusion, while the CAS aims to align India with global trading practices, the underlying market infrastructure must evolve to support such innovations effectively. Initiatives to bolster liquidity, lower transaction costs for various trading instruments, and enhance participatory breadth among investors will be crucial in overcoming these inherent limitations. Investors should closely monitor developments regarding potential regulatory reforms and adjustments to trading mechanisms that could significantly impact market dynamics and operational efficacy in Indian equity markets.
Source: The Economic Times
(Expert Note: This report was prepared by the Wealthova team.)