India’s IPO regulatory framework has undergone its most comprehensive revision in a decade, with the Securities and Exchange Board of India implementing a series of changes across 2023, 2024, and 2025 that together address listing speed, anchor investor behaviour, price discovery integrity, and the specific risks that had accumulated in the fast-growing SME IPO segment. For investors participating in the primary market in 2026, these reforms are not upcoming changes — they are the current operating standard that governs every IPO from application to listing.
T+3 Listing: Now Standard, Not New
The most visible reform in investor experience — the reduction in IPO listing time from six working days to three — is fully operational and has been since December 2023. It is important to state this precisely because the research brief submitted for this article framed T+3 as a 2025-26 update. It is not; it is a 2023 SEBI circular that is now embedded in market practice.
SEBI issued a circular on August 9, 2023, establishing a phased implementation for the move from T+6 to T+3 listing. The shift was made voluntary for all public issues opening on or after September 1, 2023. It became mandatory for all public issues opening on or after December 1, 2023. Libertify Every mainboard and SME IPO that has opened since that date has operated under the T+3 framework.
The practical consequence for investors is that the period during which application money remains blocked in a bank account — under ASBA, the Application Supported by Blocked Amount mechanism — has been reduced from six working days to three. For unsuccessful applicants, the blocked funds are unblocked on T+3 rather than T+6. SEBI specified that compensation to investors for any delay in unblocking ASBA application money would be computed from T+3 day under the new framework. World Bank
A clarification on ASBA is warranted here. The research brief described ASBA as a new feature under which “paisa tabhi kata hai jab allotment confirm ho jaye.” This is the original design of ASBA, introduced by SEBI in 2008 and made mandatory for all retail applicants in 2016. Under ASBA, the application amount is blocked — not debited — from the investor’s bank account at the time of application, and earns interest during the blocked period. It is debited only upon allotment and unblocked for unsuccessful applicants. This is not a new feature introduced in 2025-26; it is foundational infrastructure of the Indian IPO system.
Anchor Investor Lock-In: A Structural Fix to Post-Listing Selling Pressure
SEBI extended the lock-in period for anchor investors as part of the same regulatory package that introduced T+3. Anchor investors are Qualified Institutional Buyers who invest a minimum of ₹10 crore in mainboard IPOs before the public subscription opens. Under the previous rules, anchor investors could sell 100 per cent of their allotted shares after a 30-day lock-in from the date of allotment. The revised rule introduced a split structure: 50 per cent of anchor allocation remains locked for 30 days, while the remaining 50 per cent is locked for 90 days. International Monetary Fund
The practical significance is documented in post-listing price patterns. Under the previous framework, anchor investors who received allotment at IPO price could exit their entire position on day 30 — a period that often corresponded with the first significant post-listing price correction as early retail momentum faded. The 30-day mass exit by anchors amplified this correction into a sharper decline, disadvantaging retail investors who had held their allotted shares. The split lock-in reduces the quantum of institutional supply entering the market at the 30-day mark, providing more support for the stock price through the early post-listing phase.
NII Allotment: Draw of Lots Replaces Proportionate Allocation
SEBI changed the allotment method for Non-Institutional Investors in book-built IPOs from proportionate allotment to a draw of lots system — the same method used for retail investors. Under the previous proportionate allotment system, an NII applying for a larger number of lots received a proportionately larger allotment. This created a strong incentive for high-net-worth investors and institutional entities to borrow heavily and apply for maximum possible lot sizes, inflating stated subscription multiples without reflecting genuine demand from a broader investor base. Under the draw of lots method, each applicant — regardless of application size — either receives one minimum lot or nothing, based on a lottery. The incentive to over-apply using borrowed funds is eliminated, as a ₹1 crore application has no better probability of allotment than a ₹2 lakh application. International Monetary Fund
This reform has a direct bearing on the subscription multiple data reported for SME IPOs — and on how investors should interpret those multiples. Historically inflated NII subscription figures, driven by leveraged over-application rather than genuine investment demand, created artificial positive sentiment that contributed to listing-day excitement and subsequent crashes. The draw of lots method produces cleaner subscription data that more accurately reflects the number of distinct investors interested in a given issue at a minimum investment level.
OFS Restrictions: Aligning Promoter Incentives With Long-Term Performance
SEBI introduced restrictions on the proportion of IPO proceeds that can come from Offer for Sale by large shareholders. Shareholders with more than 20 per cent pre-IPO holdings can sell no more than 50 per cent of their shares through the IPO’s OFS component. Shareholders with less than 20 per cent pre-IPO holdings can sell a maximum of 10 per cent of their shares through OFS. International Monetary Fund This addresses a structural problem visible in several high-profile listings where promoters and pre-IPO investors used the IPO almost entirely as an exit mechanism — receiving all proceeds while contributing no fresh capital to the company for operational or growth purposes.
For retail investors, the practical significance is straightforward: an IPO with a large OFS component and minimal fresh issue does not provide the company with capital to invest in its stated business objectives. The OFS restrictions ensure that promoters retain meaningful skin in the game after listing, aligning their interests with long-term shareholder value rather than a one-time exit.
The SME-Specific 2025 Overhaul: Minimum Profitability and Investment Thresholds
The 2025 amendments to SEBI’s ICDR regulations specifically targeting the SME segment represent the most substantive reform to that market since NSE Emerge and BSE SME platforms were launched in 2012.
The minimum application size for SME IPOs has been doubled from ₹1 lakh to ₹2 lakh, effective from July 1, 2025. The retail individual investor category has been abolished for SME issues; all investors must apply for a minimum of two lots. A minimum operating profit of ₹1 crore in at least two of the three years preceding the IPO has been made mandatory for SME listing eligibility. The general corporate purposes allocation cap has been reduced from 25 per cent to the lower of ₹10 crore or 15 per cent of issue size. The minimum number of allottees required for a successful SME IPO has been raised from 50 to 200. International Monetary Fund
Each of these changes targets a specific observed abuse: the profitability threshold addresses the listing of loss-making entities with no demonstrated ability to generate returns; the minimum investment increase reduces speculative applications from small retail investors who could not meaningfully evaluate SME-level financial disclosures; the general corporate purposes cap reduces the space for vague fund utilisation; and the higher allottee minimum addresses thinly distributed ownership that enabled manipulation.
The Valuation Disclosure Requirement
SEBI now requires IPO-bound companies to disclose in their offer documents how their issue price compares to listed peer companies on standard financial metrics — price-to-earnings, price-to-book, and earnings per share — enabling investors to conduct a basic relative valuation assessment without constructing peer comparisons independently. This requirement does not prevent companies from pricing aggressively relative to peers, but it ensures that the comparison is visible in the prospectus rather than requiring investor research to surface. International Monetary Fund
The cumulative effect of SEBI’s regulatory programme is a primary market that is structurally better designed for investor protection than it was at the 2021 peak. Faster listing reduces capital lock-up risk; extended anchor lock-ins reduce post-listing institutional selling pressure; NII draw of lots eliminates leveraged subscription inflation; OFS restrictions maintain promoter alignment; SME profitability thresholds raise the average quality of issuers; and valuation disclosure requirements make pricing benchmarks transparent. Whether investors use these protections effectively depends on their willingness to read offer documents, evaluate disclosed comparisons, and resist applying to issues solely on the basis of grey market premium — a decision no regulation can make for them.