Offer for Sale (OFS): Mechanism & Examples

Historical Background and Why SEBI Introduced OFS

Before the OFS mechanism existed, large shareholders who wanted to sell significant stakes in listed companies faced a practical dilemma. Selling through the open market over many sessions would move the price adversely and signal distress to other investors. A formal public offering - such as a Follow-on Public Offer - required the company itself to be involved, demanded an elaborate prospectus, and could take two to three months from initiation to completion. Block deals offered speed but were largely restricted to institutional investors, and they lacked the public-participation dimension that regulators and policymakers sought.

SEBI first introduced the OFS framework in February 2012 through a circular that amended the SEBI (Issue of Capital and Disclosure Requirements) Regulations. The original design was relatively narrow, applying mainly to promoters of top-100 NSE-listed companies who needed to meet the minimum public shareholding requirement of 25 per cent. The Companies Act and SEBI's listing obligations required promoters holding more than 75 per cent to reduce their stake, and OFS gave them an orderly, exchange-backed mechanism to do so quickly.

Over the following years, SEBI broadened the scope significantly. By 2015 and again through subsequent amendments, the eligibility was extended to companies listed on BSE as well, the definition of eligible sellers was widened to include all shareholders holding more than a specified threshold, and procedural improvements such as the retail reservation requirement, the T-1 floor-price announcement, and the oversubscription carry-forward option were introduced. SEBI's goal was to make the mechanism robust enough to serve both corporate divestments and the Government of India's ambitious divestment programme.

The Government's embrace of OFS was swift and substantial. Beginning around 2013-14, the Department of Investment and Public Asset Management (DIPAM) made OFS the workhorse of its divestment calendar. Partial stake sales in major public-sector undertakings listed on NSE and BSE started happening with increasing regularity, providing the government with a fast, market-determined price and offering retail and institutional investors alike an opportunity to buy shares at a modest discount to the prevailing market price.

In parallel, the private sector also found OFS valuable. Private-equity investors and venture-capital funds that had backed Indian companies in their early stages used OFS to monetise their stakes once the companies had listed, rather than waiting for lock-in periods to expire and selling slowly in the secondary market. Founders who had received pre-IPO ESOP grants used it to partially liquidate after listing. Promoters of family-owned conglomerates used it to realign ownership structures.

Understanding this historical evolution helps explain why the OFS regulations are structured the way they are today - with separate rules for retail versus non-retail participants, mandatory floor price disclosures, and special provisions for government-entity sellers. Each layer of regulation reflects a lesson learned from early usage or a deliberate policy choice made to balance speed, fairness, and transparency in the Indian market context.

Who Can Sell Through an OFS and Who Can Buy

SEBI's regulations draw a clear boundary around both the sellers who are eligible to use the OFS mechanism and the buyers who can participate. Understanding these eligibility conditions is the first practical step for anyone dealing with an OFS transaction.

On the seller side, an OFS can be initiated only by a promoter or a promoter group entity, or by a non-promoter shareholder who holds at least 10 per cent of the paid-up capital of the company. This 10 per cent threshold was introduced to ensure that OFS is used for meaningful divestments rather than routine secondary market sales. A shareholder who holds 2 per cent or 3 per cent of a company's shares cannot unilaterally trigger an OFS; they must use the regular secondary market or negotiate a block deal instead.

The company whose shares are being sold must also meet certain conditions. It must already be listed on a recognised stock exchange - either NSE or BSE - and must not be under any regulatory bar or suspension. Unlisted companies cannot directly use OFS; they would need to go through an IPO process first, after which a subsequent OFS by the promoter would be permissible. This distinction is important because it means OFS is fundamentally a secondary-market tool for already-listed companies, not a primary-market listing route.

On the buyer side, virtually any investor can participate in an OFS subject to the category they fall into. SEBI categorises bidders into two broad groups: retail individual investors (RIIs) and non-retail investors. A retail individual investor is any individual - Indian resident or eligible Non-Resident Indian (NRI) - who places a bid for shares worth up to ₹2 lakh in total across all their bids in a single OFS. Any bid exceeding ₹2 lakh in value, or any bid placed by a corporate entity, a mutual fund, a foreign portfolio investor (FPI), an insurance company, a bank, or any other institutional or non-individual investor, falls in the non-retail category.

SEBI requires that a minimum of 25 per cent of the total shares offered in an OFS be reserved for retail investors. This reservation is not merely a soft guideline; if the retail portion is undersubscribed, those unallotted shares can be offered to non-retail bidders, but the system first exhausts the retail reservation before moving to non-retail allocation. This retail-first approach is designed to democratise large share-sale transactions that might otherwise be dominated entirely by domestic institutional investors and FPIs.

There is also a special category for mutual funds and insurance companies, sometimes referred to as the domestic institutional investor bucket. Depending on the offer structure, a separate reservation may be carved out for this segment as well, though the specific proportions can vary based on the seller's instructions and SEBI guidelines applicable at the time.

For employees of the company, there is sometimes an additional employee reservation portion, allowing staff to bid at a discount - similar to the employee quota in an IPO. However, this portion is discretionary rather than mandatory, and not all OFS transactions include an employee tranche.

Government divestments carried out by DIPAM may have slightly different procedural overlays - for example, the Cabinet Committee on Economic Affairs (CCEA) may need to approve the transaction - but the exchange-level bidding mechanism follows the same SEBI-prescribed OFS framework that applies to all eligible sellers.

The OFS Bidding Mechanism: Step by Step on the Exchange Platform

The defining feature of an OFS is that the entire transaction occurs on the normal trading platforms of NSE and BSE, using a dedicated order book. This exchange-based architecture makes the process transparent, auditable, and free from the manual allocation discretion that sometimes characterises private placements.

The process begins when the selling shareholder files an intimation with the stock exchanges at least one trading day before the OFS opens. This intimation - which the exchanges then disseminate publicly - discloses the name of the company, the number of shares being offered, the floor price at which bids will be accepted, and the scheduled opening and closing times for bidding. The floor price is the minimum price at which the seller is willing to sell; no bid below this floor will be accepted. The floor price announcement on T-1 (the day before the OFS) is critically important for retail investors because it allows them to calibrate their bids relative to the prevailing market price.

On the OFS day itself - T day - the exchange opens a separate OFS order book at the scheduled time, typically coinciding with or slightly after the opening of the normal equity market session at 9:15 AM IST. Investors place their bids through their stockbrokers, specifying either the floor price (which is equivalent to a cut-off bid, indicating willingness to accept whatever clearing price is determined) or a specific price above the floor. Importantly, unlike regular secondary market orders, OFS bids are on a best-effort basis: a bidder commits the bid amount, and their broker blocks the required funds in the client's account to ensure they are not placing unfunded bids.

Multiple bids from the same investor are allowed, but all bids are aggregated for the purpose of determining whether the investor qualifies as retail or non-retail. If the cumulative bid value from one PAN crosses ₹2 lakh, the investor is reclassified as non-retail and their bids compete in the non-retail pool.

Throughout the bidding window, investors can see the live indicative price on the exchange platform, which provides a sense of demand at various price levels. Bids can also be modified or cancelled during the bidding period, giving participants flexibility to revise their strategy as they observe the emerging demand curve.

At the close of the bidding window, the exchange determines the clearing price. For the non-retail portion, this is typically the price at which the cumulative demand from all non-retail bids equals the number of shares available in that tranche - a standard uniform-price auction mechanism. Bids at or above the clearing price receive allotment; bids below the clearing price are rejected and funds are unblocked. In the retail portion, a similar price-discovery process applies, though SEBI rules permit the seller to offer a retail discount - of up to 5 per cent relative to the non-retail clearing price - to encourage broader participation.

Allotment is typically announced on the same evening or the next morning. Settlement follows the standard exchange settlement cycle: shares are credited to the buyer's demat account and funds are debited on the settlement date. Because the transaction settles through the clearing corporation - the National Securities Clearing Corporation Limited (NSCCL) for NSE trades and the Indian Clearing Corporation Limited (ICCL) for BSE trades - counterparty risk is virtually eliminated, a significant advantage over over-the-counter block placements.

If the OFS is undersubscribed - that is, total valid bids do not reach the number of shares on offer - the seller has the option to either cancel the offer entirely or accept the partial subscription at the floor price. Some OFS structures also allow a greenshoe-style carryover, where the seller can opt to extend the offer to a second day if first-day subscription was insufficient, subject to exchange rules.

Floor Price, Cut-Off Bidding, and Price Discovery

The floor price is arguably the most strategically important element of an OFS for both the seller and the investor. Setting it too high discourages participation and risks undersubscription; setting it too low leaves money on the table for the seller. Understanding how the floor price is determined - and how it interacts with market prices and investor bids - is essential for making informed participation decisions.

SEBI does not prescribe a formula for the floor price; the selling shareholder has discretion in choosing it. In practice, however, the floor price is almost always set slightly below the prevailing market price of the stock on the day of the T-1 announcement. The spread between the floor price and the market price is sometimes called the implied discount. A deeper discount tends to generate stronger demand, particularly from retail investors who are attracted by the prospect of buying below market. A shallower discount, or sometimes even a premium to the market price (which is technically allowed but rare), usually signals that the seller is confident of strong institutional demand.

Once the floor price is announced, investors face a choice: bid at the floor price (effectively a cut-off bid), bid at a specific price above the floor, or not participate at all. A cut-off bid is the simplest approach for retail investors - it says, "I am willing to pay whatever the final clearing price turns out to be, as long as it is not below the floor." A specific-price bid is more nuanced: the investor declares the maximum price they are willing to pay. Bids above the clearing price receive full allotment; bids at the clearing price may receive partial allotment if the demand at that exact price exceeds the remaining shares available.

The clearing price that emerges from this uniform-price auction mechanism serves as a form of real-time price discovery that is more rigorous than a negotiated block deal. Because hundreds or thousands of investors are simultaneously declaring their reservation prices, the clearing price reflects genuine market demand across a wide range of participants. This transparency is one reason SEBI and policymakers favour OFS over other divestment mechanisms.

For retail investors specifically, the effective price paid is often lower than the non-retail clearing price because of the retail discount that some sellers provide. If the non-retail clearing price is, say, ₹500 per share and the seller has offered a 5 per cent retail discount, retail investors who are allotted shares pay ₹475 per share. This built-in discount can make OFS participation attractive compared to buying the same shares in the open market immediately after the offer.

However, investors should be careful not to treat the floor price or the implied discount as a guaranteed profit signal. The market price of the stock on the day following the OFS allotment depends on a multitude of factors - the overall market direction, any company-specific news, the volume of shares sold (which represents fresh supply entering the market), and the post-OFS shareholding structure. Large OFS events sometimes cause temporary downward pressure on the stock price simply because a significant supply has just been distributed to investors who may choose to sell relatively quickly. This is a risk that retail participants must weigh consciously before bidding aggressively.

SEBI also requires that the seller disclose any lock-in or other conditions on the shares being sold, as well as whether they plan any further sales in the near future. This information helps investors assess whether additional selling pressure is likely after the current OFS concludes.

OFS vs. IPO vs. FPO: Key Differences Every Investor Should Know

The Indian capital markets offer several mechanisms through which shares change hands between existing shareholders and new investors. The Initial Public Offering (IPO), the Follow-on Public Offer (FPO), and the Offer for Sale (OFS) are the three most commonly encountered, and while they may appear similar on the surface, they differ in fundamental ways that affect the company, the seller, and the buyer.

An IPO is the first time a private company offers its shares to the general public and lists on a stock exchange. An IPO can consist of two components: a fresh issue (where new shares are created and the proceeds go to the company for business purposes) and an offer for sale (where existing shareholders sell some of their shares and receive the proceeds themselves). When you see the term OFS used in the context of an IPO document, it refers to the selling shareholder component embedded within the IPO. This is different from the standalone OFS mechanism described in this article, which applies only to companies that are already listed.

An FPO, or Follow-on Public Offer, is a subsequent public offering by an already-listed company to raise fresh capital by issuing new shares. Like an IPO, an FPO requires a full prospectus, SEBI review, a price band, anchor investor participation, an application-supported-by-blocked-amount (ASBA) application process, and a subscription period of typically three trading days. The proceeds go to the company. An FPO can also contain an OFS component where existing shareholders sell alongside the fresh issue.

The standalone OFS mechanism, by contrast, is leaner on almost every dimension. There is no fresh capital raised for the company, no lengthy prospectus document, no SEBI observation letter required for the sale itself (though the company must remain compliant with all its listing obligations), no ASBA application window spanning multiple days, and no anchor investor allocation round. The entire offer opens and closes within a single trading day in most cases. Settlement occurs through the normal exchange clearing mechanism.

From the company's perspective, an OFS is largely a passive event - the company facilitates the process by cooperating with the exchange intimation requirements, but it is not raising money or issuing new shares. Management attention and administrative burden are minimal compared to an FPO. This neutrality is also why OFS is sometimes preferred by companies whose promoters wish to reduce their stake without making it appear that the company itself needs capital, which a fresh issue might inadvertently signal.

From an investor's perspective, the key practical difference is the timeline. In an IPO or FPO, you apply, wait for allotment, and then wait for listing - a process that can take ten to fifteen days or more. In an OFS, bids are placed and shares are credited to your demat account typically within one to two settlement days. The capital outlay is also blocked for a much shorter period, reducing the opportunity cost of applying.

However, the transparency characteristics differ too. An IPO or FPO requires extensive disclosure in the Draft Red Herring Prospectus - including financial statements, risk factors, management discussion, and the exact use of proceeds. In a standalone OFS by an existing promoter, the disclosures are limited to what the company already publishes as part of its ongoing listing obligations. Investors rely primarily on publicly available information about the company rather than a fresh set of disclosures crafted for the offering.

In summary: an IPO takes a private company public; an FPO raises fresh capital for an already-listed company; and a standalone OFS helps existing shareholders of a listed company monetise their holdings quickly and transparently through the exchange. Each instrument serves a different strategic purpose, and understanding these distinctions helps investors place each OFS they encounter in the correct analytical framework.

Regulatory Framework: SEBI Guidelines and Listing Obligations

SEBI's framework for OFS has evolved through multiple circulars and amendments, primarily under the SEBI (Issue of Capital and Disclosure Requirements) Regulations, 2018 (ICDR Regulations) and various standalone OFS circulars. Understanding the key regulatory requirements helps investors and market participants navigate the process confidently.

The intimation requirement is foundational. The selling shareholder must intimate the stock exchanges about the proposed OFS at least one trading day (T-1) before the opening of the offer. This intimation must include the seller's name, the number of shares being offered, the floor price, the date and time of the offer, the reservation for retail investors, and any discount being offered to retail bidders. Once submitted to the exchange, this intimation becomes public information and is disseminated through the exchange's formal disclosure mechanism to all market participants simultaneously. This simultaneous disclosure is crucial for ensuring a level playing field.

SEBI mandates that an OFS can remain open for a maximum of two trading days. Most OFS transactions are completed in a single day, but in cases of insufficient subscription, the seller may opt to extend to a second day. The option to extend must be declared upfront in the original intimation - sellers cannot decide on the morning of Day 2 whether to extend; the intention must be pre-announced.

The minimum offer size has been prescribed by SEBI to prevent the mechanism from being used for trivially small share sales that do not serve a genuine price-discovery or divestment purpose. Sellers are expected to offer a meaningful quantity of shares, and the exchange platforms process OFS orders only for companies that meet the relevant eligibility criteria.

Promoters or promoter group entities using OFS to reduce their shareholding to comply with the 25 per cent minimum public shareholding norm face certain additional conditions under SEBI's Minimum Public Shareholding (MPS) norms. SEBI has over the years prescribed an OFS route specifically to facilitate MPS compliance, with slightly modified timelines and disclosure conditions that are periodically updated through circulars.

The Listing Obligations and Disclosure Requirements (LODR) Regulations also impose obligations on the listed company during an OFS. The company must not be in a trading restriction period - for example, if the company is in the silent period ahead of its quarterly results announcement, or if any unpublished price-sensitive information (UPSI) exists that has not yet been publicly disclosed, the seller (if an insider) is barred from executing the OFS under SEBI's Prohibition of Insider Trading Regulations. This provision protects ordinary investors from trading against counterparties who possess material non-public information about the company.

Post-OFS, the selling shareholder must disclose the results of the OFS to the exchanges, including the number of shares actually sold, the clearing price achieved, and the identities and categories of successful bidders (in aggregate). This post-offer disclosure feeds into the exchange's shareholding pattern records, which are then updated in the quarterly shareholding disclosures that all listed companies must make.

For government-owned companies, the OFS framework intersects with DIPAM guidelines, the Public Enterprises Survey, and sometimes Cabinet approvals. While the exchange-level mechanics are the same as for any other OFS, the administrative clearances required before DIPAM can launch an OFS in a public-sector enterprise can be more elaborate. SEBI's role remains that of the capital markets regulator; it does not approve or disapprove individual OFS transactions but does enforce the procedural and disclosure framework within which all OFS transactions must occur.

Investors who wish to stay current on OFS regulations should periodically check SEBI's website (sebi.gov.in) and the circulars section, as the regulator refines OFS rules in response to market feedback, technological changes, and evolving policy priorities.

How Retail Investors Can Participate: A Practical Guide

For a retail investor, participating in an OFS is considerably simpler than participating in an IPO, yet there are enough procedural nuances that a first-time participant can easily make avoidable mistakes. This section walks through the practical participation process from the perspective of an individual retail investor with a demat and trading account.

The first step is to stay informed. OFS announcements are published on the NSE (nseindia.com) and BSE (bseindia.com) websites, typically on the T-1 afternoon. Many brokers - including online discount brokers - send push notifications and email alerts to their clients when an OFS is announced for a company the client may hold or has shown interest in. Subscribing to exchange notification services or your broker's alert system is a practical way to avoid missing opportunities.

Once an OFS is announced, note the floor price and compare it with the current market price of the stock. Calculate the implied discount. If the stock is trading at ₹520 and the floor price is ₹495, the implied discount is approximately 4.8 per cent. Whether this discount is attractive depends on your assessment of the stock's fair value, your investment horizon, and your understanding of why the promoter or seller is divesting.

On the day of the OFS, log in to your trading platform and navigate to the OFS section. Most modern Indian broking platforms have a dedicated tab or module for OFS transactions, separate from the normal equity order entry screen. You will see the company name, the floor price, the indicative price (which updates in real time during the bidding window), and the quantity available.

Place your bid by specifying the quantity of shares you want and the price at which you are willing to buy. As discussed earlier, if you are comfortable with the floor price and want to maximise your chances of allotment, place a bid at the floor price (cut-off bid). If you want to pay no more than a specific price, enter that price. Remember: a retail investor's cumulative bid value must stay at or below ₹2 lakh to remain in the retail category. If your bids collectively exceed ₹2 lakh, you move to the non-retail pool and compete there instead.

Ensure that your trading account has sufficient funds - or that your margin facility is enabled and sufficient - before placing the bid. Unlike in ASBA-based IPO applications where funds are blocked in a bank account, OFS bids are processed through your broking account, and the required funds or margin must be available at the time of bid submission.

After placing the bid, you can monitor the indicative price and, if desired, modify or cancel your bid before the closing time. This flexibility is one of the advantages of the OFS format. If market conditions shift dramatically during the bidding window - for instance, if a broader market sell-off pushes the stock's secondary market price below the OFS floor price - you may choose to cancel your OFS bid and avoid buying at a premium to the current market.

Post closure, allotment results are typically announced by the exchange on the same evening or the following morning. If you are allotted shares, they will appear in your demat account on the settlement date (usually T+1 or T+2 from the offer day). Funds will be debited from your account at the clearing price - or at the discounted retail price if a retail discount was offered. If your bid was not successful, no funds are deducted.

One important consideration: unlike IPO allotments where a small retail investor faces a lottery-based allotment when oversubscribed, OFS allotments in the retail category are based on price priority - higher bids get preference - and, within the same price level, pro-rata allotment. If you bid at the cut-off price (floor price) and the offer is heavily oversubscribed even at the floor, you may receive only a fraction of the quantity you bid for. Bidding at a price marginally above the floor can improve your allotment priority at the cost of paying slightly more per share.

Taxation of OFS Gains and Losses in India

The tax treatment of shares acquired through an OFS follows the same rules that apply to any listed equity shares - there is no special tax regime for OFS acquisitions. However, understanding a few nuances ensures you plan your post-allotment holding and selling decisions correctly.

When you are allotted shares through an OFS, your cost of acquisition for tax purposes is the price you actually paid - the clearing price (or the discounted retail price if a retail discount was applied). This becomes your cost basis for computing capital gains when you eventually sell the shares.

If you hold the allotted shares for more than 12 months from the date of allotment before selling them on a recognised stock exchange, the resulting gain is treated as Long Term Capital Gain (LTCG). If you sell within 12 months, the gain is Short Term Capital Gain (STCG). Since listed equity shares are subject to Securities Transaction Tax (STT) on both purchase (at the time of the OFS allotment) and sale (when you sell in the secondary market), specific capital gains tax rates apply. The precise rates are governed by the Income-tax Act, 1961 as amended by successive Finance Acts - investors should refer to the latest Finance Act or consult a qualified tax adviser for the current applicable rates, as these can change with each Union Budget.

The STT on the OFS purchase is typically levied at the rate applicable to delivery-based equity transactions, calculated on the transaction value. This STT is borne by the buyer (the investor being allotted shares) and is usually included in your contract note from the broker.

For sellers - the promoters or shareholders executing the OFS - the proceeds received constitute consideration for the transfer of a capital asset. The capital gains (or losses) arising in the hands of the seller are similarly governed by the 12-month holding period test for LTCG versus STCG. For promoters who have held shares since the company's incorporation or since a very early stage, a significant portion of the proceeds may represent long-term capital gains, and the applicable exemption threshold and rates under the Income-tax Act would apply.

If you receive shares through an employee reservation portion at a discount, the discount amount is treated as a perquisite (a benefit from employment) and is taxed as salary income in the year of allotment, not as capital gains. The perquisite value is the difference between the fair market value of the shares on the allotment date and the price you paid. Subsequent gains or losses on selling those shares are then capital gains computed on the fair market value as the cost of acquisition.

For NRI investors participating in an OFS, withholding tax (TDS) rules under the Income-tax Act apply to any capital gains arising on the sale of the allotted shares. NRIs should be aware of these withholding obligations and, where applicable, utilise Double Taxation Avoidance Agreements (DTAAs) between India and their country of residence to optimise their tax liability.

Goods and Services Tax (GST) does not apply to the purchase or sale of equity shares, as securities transactions are outside the GST regime. Brokerage and other transaction charges levied by the broker attract GST, but those are relatively minor costs.

Investors should maintain careful records of their OFS allotments - the allotment price, allotment date, number of shares received, STT paid, and brokerage paid - to accurately compute capital gains at the time of filing their income tax returns. Most brokers provide a consolidated tax statement or capital gains statement that covers OFS transactions alongside other equity trades.

Government Divestment Through OFS: DIPAM and the Public-Sector Angle

A significant portion of OFS activity in the Indian market involves the Government of India's divestment programme administered by the Department of Investment and Public Asset Management (DIPAM) under the Ministry of Finance. Understanding this dimension is useful because government OFS transactions often have distinctive characteristics - in size, price dynamics, and market impact - that set them apart from private-sector OFS events.

The Government of India holds direct equity stakes in dozens of public-sector undertakings (PSUs) listed on NSE and BSE, ranging from large-cap financial institutions, energy majors, and defence manufacturers to smaller regional entities. Through the Union Budget, the government announces a divestment target - the amount it intends to raise by selling stakes in these companies during the financial year. OFS has emerged as the fastest and most market-friendly tool to meet these targets without the complexity of a strategic sale or a full privatisation.

A typical DIPAM OFS begins with a cabinet-level decision to reduce the government's stake in a particular PSU by a specified percentage. Once the political and administrative clearances are obtained, DIPAM coordinates with the exchange, the registrar, and the lead managers to launch the OFS. The intimation to the exchanges follows the same T-1 disclosure requirement as any other OFS, and the bidding mechanics are identical.

However, government OFS transactions sometimes feature a few additional characteristics. The offer size can be very large - billions of rupees worth of shares in a single day - which means that institutional demand must be robust for the offer to clear at the floor price. DIPAM typically sets the floor price after consulting with investment bankers and reviewing the stock's recent trading pattern, aiming for a modest discount that generates sufficient demand without severely diluting the government's realisation.

Another distinctive feature is the retail discount, which DIPAM has historically offered in most of its OFS transactions. This discount - typically 5 per cent of the non-retail clearing price - has been a deliberate policy tool to encourage broader retail participation in public-sector enterprises, aligning with the government's goal of expanding the equity-investing population in India and creating a wider base of stakeholders in PSUs.

Fiscal year-end pressure is another characteristic of government OFS activity. Because divestment receipts are budgeted targets, DIPAM sometimes launches multiple OFS transactions in the January-to-March period as the fiscal year-end approaches. This clustering can affect the supply-demand dynamics of the broader market - a large simultaneous supply of multiple PSU shares can absorb institutional liquidity and create temporary pricing pressure across the sector.

Investors evaluating participation in a government OFS should conduct the same fundamental analysis they would for any equity investment - examining the company's financial health, valuation relative to peers, regulatory environment, and management quality - rather than assuming that government ownership or a listed PSU status automatically makes the investment sound. The government's divestment agenda and the OFS mechanism provide a route to participate, not an investment recommendation.

SEBI and DIPAM have also worked together to improve the technical infrastructure for large government OFS transactions - for example, by upgrading exchange systems to handle the surge in bidding volume that typically accompanies a high-profile PSU offer. Investors using online platforms should ensure stable connectivity and place bids early in the window to avoid last-minute technical difficulties.

Example

Key benefits

How it works

1. 1
   Seller Files T-1 Intimation

   The eligible selling shareholder submits a formal intimation to NSE and BSE at least one trading day before the offer, disclosing the floor price, offer size, retail reservation, and any retail discount. Exchanges disseminate this information publicly.

2. 2
   Exchange Opens the OFS Order Book

   On the designated OFS day, the exchange opens a separate dedicated order book during normal market hours. Investors can view the floor price, indicative live price, and cumulative demand across categories in real time.

3. 3
   Investors Place Bids Through Brokers

   Retail and non-retail investors place their bids - specifying quantity and price at or above the floor - through their stockbrokers' trading platforms. Required funds are blocked in the investor's account to validate the bid.

4. 4
   Bids Can Be Modified or Cancelled

   During the open bidding window, investors retain the option to revise their bid price or quantity, or withdraw their bid entirely. This flexibility allows participants to respond to evolving demand signals during the day.

5. 5
   Bidding Window Closes and Clearing Price Is Determined

   Once the window closes, the exchange applies a uniform-price auction mechanism to determine the clearing price for each category (retail and non-retail). Bids at or above the clearing price receive allotment; lower bids are rejected and funds unblocked.

6. 6
   Allotment Is Announced

   The exchange announces allotment results - typically the same evening or the following morning. Successful bidders are informed through their brokers, and shares are credited to their demat accounts on the settlement date.

7. 7
   Settlement Through the Clearing Corporation

   Funds are debited and shares transferred through NSCCL or ICCL on the standard exchange settlement cycle (T+1 or T+2), eliminating counterparty risk and completing the OFS transaction with finality.

Formula

Effective Retail Price = Non-Retail Clearing Price × (1 - Retail Discount %)
Implied Discount to Market = (Market Price - OFS Floor Price) / Market Price × 100

Key takeaways

Frequently asked questions

Related terms