SEBI proposes changes to base prices and dummy bands in pre-open auctions for IPOs and re-listed securities to enhance price discovery and reduce market distortions.
SEBI Proposes Reforms to Improve Pre-Open Auctions
SEBI has proposed key amendments to the price discovery mechanism in pre-open sessions for initial public offerings (IPOs) and re-listed securities. The regulator aims to address volatility and manipulation risks by refining the determination of base prices and introducing dynamic dummy price bands during the order collection phase.
The current system, which relies on fixed percentage bands around the previous close, may lead to distorted opening prices—especially in cases where there is limited reference pricing, such as post-delisting or during relaunches. SEBI’s proposed framework introduces a more flexible approach using indicative equilibrium prices derived from order book aggregation, with safeguards to prevent extreme deviations.
These reforms are expected to improve market efficiency and investor confidence, particularly in newly listed instruments. Market participants will need to adapt trading algorithms and surveillance systems to align with the revised parameters. SEBI has invited stakeholder feedback before finalizing the guidelines, signaling a move toward data-driven auction design.
