Securities and Exchange Board of India has proposed a new framework for determining opening prices of re-listed stocks in an effort to make price discovery more transparent, fair, and resistant to market distortions.
The proposed reforms are designed to address issues where stocks reopening after long trading suspensions sometimes list at artificially low prices before rapidly hitting upper circuits once regular trading begins.
What SEBI Wants to Change
Under the proposed system, SEBI plans to revise how the “base price” for re-listed stocks is calculated during the pre-open call auction session.
If a company resumes trading within six months of suspension:
- Exchanges may use the latest traded closing price on the same exchange
- If unavailable, they may use prices from another exchange
If no recent market price exists, the opening price would instead be determined using independent valuation reports prepared by approved chartered accountants or valuation agencies.
For companies re-listed after suspensions longer than six months, the opening base price would rely entirely on independent valuation mechanisms.
Why SEBI Is Concerned
SEBI said the current mechanism sometimes causes genuine buy orders to get rejected during the pre-open session, leading to distorted opening prices and excessive volatility once trading officially starts.
In some cases, stocks reopened at prices far below their actual financial value due to outdated pricing formulas based on face value or old book value calculations.
The regulator cited concerns that these distortions can:
- Trigger repeated upper circuits
- Create unfair price discovery
- Increase speculative trading
- Reduce investor confidence
One example highlighted involved Swan Defence, whose shares reportedly reopened at ₹35.99 despite a much higher book value.
Changes to Pre-Open Auction Rules
SEBI has also proposed changes to the “dummy price band” mechanism used during pre-open auctions.
Currently, exchanges manually widen price bands when strong demand emerges, but the regulator believes this process can delay efficient price discovery and reject legitimate orders.
Under the proposal:
- Dummy price bands could automatically widen by 10%
- Price discovery would require participation from at least five unique PAN-based buyers and five sellers
At present, even a single matching order can determine the opening equilibrium price. SEBI believes broader participation would improve market integrity and reduce manipulation risks in illiquid stocks.
Impact on Indian Markets
Market experts say the reforms could significantly improve transparency in IPO and re-listing sessions by ensuring opening prices better reflect genuine investor demand.
The move also aligns with SEBI’s broader efforts to strengthen India’s capital markets amid growing retail participation and rising trading activity.
India’s stock market has witnessed a major surge in first-time investors over the past few years, making fair price discovery mechanisms increasingly important for market stability and investor protection.
SEBI has invited public comments on the proposals before finalizing the regulatory framework.
