SEBI proposes IPO and re-listing price discovery overhaul to end circuit loops
Synopsis
SEBI has flagged a structural flaw at the heart of India's IPO market: existing price bands are rejecting up to 90% of genuine buy orders during pre-open auctions, artificially suppressing opening prices and triggering circuit-breaker cascades. Its fix — automatic band flexing in 10% multiples and independent valuation-based re-listing prices — could fundamentally change how Indian stocks open for trade.
Key Takeaways
SEBI released a consultation paper on 21 May proposing a structural overhaul of IPO and re-listing price discovery mechanisms.
The regulator found that nearly 90 per cent of buy orders in a re-listed stock were rejected because bids fell outside exchange-imposed price ranges.
Proposed fix: automatic expansion of dummy price bands in multiples of 10 per cent , uniformly across exchanges, including during the 9:35 am–9:45 am random closure window.
Re-listing reference prices would shift to recent market prices or independent valuation reports , replacing outdated benchmarks.
Call Auction Sessions would require orders from at least 5 PAN-based unique buyers and sellers to be deemed successful.
SME IPO Call Auction Sessions currently carry an over- 90 per cent price band with no flexing criteria — a gap the proposal seeks to standardise.
The Securities and Exchange Board of India (SEBI) on Thursday, 21 May released a consultation paper proposing a sweeping overhaul of how stock prices are discovered during IPO listings and re-listings, arguing that the current mechanism artificially suppresses opening prices and triggers repeated upper circuits once normal trading begins.
The Core Problem SEBI Identified
According to the regulator, existing price band guardrails are rejecting a large volume of genuine buy orders during the pre-open auction session, preventing markets from arriving at a fair opening price. SEBI cited a striking example in which nearly 90 per cent of buy orders in a re-listed stock were rejected outright because bids fell outside exchange-imposed ranges — a structural flaw that distorts price discovery from the opening bell.
Automatic Band Flexing Proposed
To fix this, SEBI has proposed automatic and faster expansion of price bands whenever strong investor demand emerges, reducing the need for manual intervention by exchanges. Under the proposal, exchanges would flex dummy price bands in multiples of 10 per cent, automatically based on pre-defined logic and, where necessary, in coordination with other exchanges.
'The mechanism for flexing the dummy price bands should be uniform across exchanges and whenever required, the flexing of the price band shall be done immediately,' the consultation paper stated.
Notably, the flexing mechanism would also operate during the random closure period from 9:35 am to 9:45 am — a window that has historically been a blind spot for price corrections.
Re-Listing Reference Prices to Be Overhauled
SEBI also proposed a complete overhaul of how starting prices are set for re-listed companies. Instead of relying on outdated or artificially low reference prices, the regulator wants exchanges to use recent market prices or independent valuation reports as the basis for re-listing price discovery. This is a significant departure from current practice and is aimed at preventing the wide gap between reference prices and actual investor valuations that has fuelled circuit-breaker cascades in re-listed stocks.
Call Auction Session and SME IPO Changes
SEBI has proposed that a Call Auction Session be treated as successful only if price discovery is based on orders from at least 5 PAN-based unique buyers and sellers, introducing a minimum participation threshold to ensure genuine price formation rather than thin-order manipulation.
On SME IPOs, the regulator flagged that while no formal price band currently exists for the Call Auction Session, stock exchanges have unilaterally applied bands of over 90 per cent without any defined flexing criteria — an inconsistency SEBI now proposes to address through standardised rules.
What Comes Next
The proposals are at the consultation stage, and market participants are expected to submit feedback before a final framework is notified. If adopted, the reforms would mark the most significant structural change to India's IPO and re-listing price discovery architecture in recent years, with direct implications for retail investors, institutional bidders, and the exchanges themselves.
Point of View
And the 90% order-rejection figure is damning evidence of a broken mechanism. The shift to automatic band flexing is sensible, but the real test will be in calibration: too-aggressive flexing risks enabling manipulation in thinly traded SME listings, while too-conservative thresholds preserve the status quo. The proposal's requirement for at least 5 unique PAN-based participants in a Call Auction is a welcome anti-gaming measure, but it may prove insufficient for micro-cap listings where a handful of coordinated accounts can still dominate. Regulators will need to watch implementation closely.
NationPress
10 Aug 2026
Frequently Asked Questions
What is SEBI proposing to change about IPO price discovery?
SEBI has proposed automatic expansion of dummy price bands in multiples of 10 per cent during IPO and re-listing sessions, replacing the current system that requires manual exchange intervention. The goal is to prevent artificial suppression of opening prices and reduce repeated upper circuits on listing day.
Why did SEBI say the current price discovery system is flawed?
SEBI found that existing price band guardrails were rejecting a large share of genuine buy orders during pre-open auction sessions. In one cited example, nearly 90 per cent of buy orders for a re-listed stock were rejected because bids fell outside exchange-set ranges, preventing fair price formation.
How will re-listing prices be determined under the new proposal?
Under the proposed framework, re-listing reference prices would be based on recent market prices or independent valuation reports, rather than the outdated or artificially low benchmarks currently used. This is intended to close the gap between reference prices and actual investor valuations.
What changes are proposed for SME IPO Call Auction Sessions?
SEBI has flagged that stock exchanges have applied price bands of over 90 per cent on SME IPO Call Auction Sessions without any standardised flexing criteria. The proposal aims to introduce uniform rules to address volatility in SME-listed prices.
What is the minimum participation threshold proposed for Call Auction Sessions?
SEBI has proposed that a Call Auction Session be considered successful only if price discovery involves orders from at least 5 PAN-based unique buyers and sellers, ensuring genuine participation rather than thin-order or coordinated price setting.
