Former BJP MP Seeks SEBI Probe Into Sensex Volatility During Closing Auction

Former BJP MP Kirit Somaiya has raised concerns about extreme volatility in the Sensex during the Closing Auction Session on August 27, according to reports. The index experienced a sharp plunge of over 2,000 points within minutes during the CAS before recovering much of the loss. Somaiya has urged SEBI to investigate the incident and examine potential weaknesses in the CAS mechanism. The closing auction session was introduced on August 3, and Somaiya's concerns center on whether the new mechanism has structural vulnerabilities related to both liquidity management and price discovery mechanisms.

The incident highlights ongoing scrutiny of India's equity market infrastructure following the introduction of new trading mechanisms. Sharp intraday swings during closing sessions can raise questions about market stability, retail investor protection, and whether auction-based closing mechanisms function as intended. Price discovery—the process by which markets determine fair valuations—is critical to market integrity, particularly during concentrated trading windows like closing auctions. Liquidity concerns in such sessions could indicate insufficient participation or imbalances in order flow. These issues matter to traders and investors across all market segments, as closing auctions increasingly influence daily price settlements and margin calculations. The timing of Somaiya's intervention suggests that the August 27 incident may have prompted broader industry and regulatory reassessment of the CAS framework's effectiveness since its August 3 launch.

Source: Markets-Economic Times