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IPO, FPO and OFS are different transactions, even though all can put shares in public investors’ hands. An IPO is a company’s first public offer while it is still unlisted; an FPO is a later public offer by a company that is already listed; and an OFS is an exchange-based sale of existing shares by current shareholders. The decisive questions are whether the issuer is listed, whether the shares are new or already held, who receives the proceeds, and how pricing, bidding and allotment work. None is automatically “better”: the right interpretation depends on the offer document, valuation, use of funds, seller disclosures and the live rules for that transaction.
At a glance
| Name | Best for | Key spec | Checked |
|---|---|---|---|
| IPO | Buying into a company’s first public offering | Issuer is unlisted; fresh shares, existing shares, or both; leads to listing | Oct 2026 |
| FPO | Participating in a listed company’s further public offer | Issuer is already listed; fresh issue, offer for sale, or both | Oct 2026 |
| OFS | Buying existing shares sold by promoters or other eligible holders | Exchange window; seller sets a floor price; retail bids generally take place on T+1 | Oct 2026 |
What is the difference between an IPO, FPO and OFS?
The classification turns first on the company’s listing status and then on the source of the shares. An IPO is the first public offer by an unlisted company. An FPO is a further public offer by a company that is already listed. An OFS is a sale of shares already held by existing shareholders through a stock-exchange mechanism.
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| Axis | IPO | FPO | OFS |
|---|---|---|---|
| Company status | Unlisted before the offer | Already listed | Already listed |
| Shares sold | Fresh shares, existing shares, or both | Fresh shares, existing shares, or both | Existing shares held by selling shareholders |
| Main purpose | First public offering and route to listing | Raise further capital or provide an offer-for-sale route after listing | Give existing holders an exchange route to sell |
| Who receives proceeds | The issuer for a fresh issue; selling holders for any OFS portion | The issuer for a fresh issue; selling holders for any OFS portion | Selling shareholders |
| Pricing | Fixed price or book-built price discovery | Fixed price or book-built price discovery | Floor-price and exchange-window process under the OFS notice |
| Investor setting | Primary market before listing | Primary market involving a listed issuer | Exchange-based sale of already listed shares |
| Typical timing mechanics | Public-issue bidding, allotment and listing schedule | Public-issue bidding and allotment under the live offer document | Non-retail bids on T day and retail bids on T+1 day under the cited framework |
What exactly is an IPO?
SEBI’s FAQ on the ICDR Regulations, updated May 15, 2025, defines an IPO as the first public offer by an unlisted company of fresh shares or convertible securities, existing securities, or both. The transaction is the company’s entry route to stock-exchange listing and subsequent trading.
An IPO can contain a fresh issue, an OFS, or both
The word “IPO” describes the first public offering, not the funding source for every share in it. A fresh issue creates new shares and sends the proceeds to the company, subject to the stated issue objects. An offer-for-sale portion transfers shares held by existing shareholders, with the sale consideration going to those sellers. An IPO can therefore raise new capital, provide liquidity to early investors, or do both in one offer.
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What an IPO applicant is actually buying
Before applying, identify the issue components in the red herring prospectus or final offer document. The document should show the price band or fixed price, the number of fresh shares, any shares offered by selling shareholders, the intended use of fresh proceeds, promoter holdings, financial information, risks and the timetable for bidding, allotment and listing.
What exactly is an FPO?
An FPO is a further public offer by a company that is already listed. SEBI’s May 15, 2025 FAQ describes it as a fresh issue to the public, an offer for sale to the public, or both, by an already listed company.
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Why a listed company may launch an FPO
A fresh-issue FPO can raise additional equity capital for the purposes disclosed in the offer document. An FPO may also include an OFS component that lets existing holders sell shares. Because the issuer is already listed, investors can examine its published financial statements, shareholding pattern, price history and prior disclosures alongside the FPO document.
Why an FPO is not simply a second IPO
The two offers have different regulatory classifications. An IPO is the company’s first public offer while unlisted; an FPO occurs after listing. The distinction matters because an FPO applicant is evaluating an already traded security and the effect of new shares or selling shareholders on the existing capital structure.
What is an OFS and does OFS money go to the company?
An OFS is a process in which existing shareholders—usually promoters or large investors—sell shares in a listed company to the public through the stock exchange. In a pure OFS, the company is not issuing new shares and does not receive the sale proceeds; the selling shareholders receive the consideration. If a broader offer combines an OFS with a fresh issue, only the fresh-issue portion raises money for the issuer.
Why a shareholder might use an OFS
OFS can give a promoter, institutional investor or other eligible holder a regulated exchange route to reduce a stake or meet public-shareholding requirements. The seller’s stated rationale, the post-sale shareholding and the company’s disclosures are more informative than assuming that any promoter sale is automatically positive or negative.
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How the OFS window differs from a public issue
The detailed framework cited by SEBI uses a separate exchange window during normal trading hours. The seller’s OFS notice must identify the seller, exchange, dates, number of shares, allocation method, any green-shoe option and the seller’s broker. Non-retail investors place bids on T day, while retail investors generally bid on T+1 day under that framework.
How do fresh issues and offers for sale differ?
A fresh issue and an OFS can appear in the same IPO or FPO, but they have different economic effects. The fresh issue expands the company’s share capital and is intended to fund the objects disclosed in the offer document. An OFS changes who owns existing shares without providing new capital to the company.
| Question | Fresh issue | Offer for sale |
|---|---|---|
| Are new shares created? | Yes | No |
| Who receives sale proceeds? | The issuer | The selling shareholders |
| Does the company’s share count increase? | Yes, subject to the final issue terms | No |
| What should investors examine? | Use of funds, execution plans, dilution and financial position | Seller identity, rationale, stake before and after sale, and price |
These distinctions follow SEBI’s definitions and are structural; the exact mix and allocation must be confirmed in the specific prospectus or OFS notice.
How are IPO and FPO prices discovered?
Public issues use either a fixed price or book building. In a fixed-price issue, the issuer sets the issue price in advance. In a book-built issue, the issuer publishes a price band and collects bids at different prices so demand can determine the final price.
What does “cut-off” mean?
SEBI Investor describes book building as bidding within a price band rather than at one predetermined price. A retail investor who selects the cut-off option agrees to pay the final discovered price. A bid below that final price may not receive an allotment, and oversubscription can result in fewer shares than the applicant requested.
What happens to application money?
Under ASBA, the specified application amount is blocked in the applicant’s bank account rather than immediately transferred. SEBI states that the amount is unblocked when shares are not allotted; the exact bank and intermediary process should be checked for the live issue.
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How does OFS pricing and bidding work?
The seller discloses a floor price, which SEBI defines as the minimum price at which the seller intends to sell the shares. Bids are submitted through the exchange mechanism, and the final allocation price is determined under the applicable OFS process. A retail discount may be offered under the permitted methodology, so a retail investor’s final price can be below the disclosed floor price where the notice allows it.
When can retail investors bid in an OFS?
Under the cited SEBI framework, non-retail investors bid on T day and retail investors bid on T+1 day. The dates, trading hours, broker route and settlement details are transaction-specific, so the current exchange notice takes precedence over a general explanation.
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What is the retail limit?
The cited framework sets the retail category’s aggregate bid value at not more than INR 2 lakhs across exchanges. Treat this as a framework threshold, not a guarantee that every future OFS will use unchanged rules; verify the current notice before submitting an order.
Can retail investors buy shares in an OFS?
Yes. The OFS framework reserves at least 10% of the offer size for retail investors, subject to the allocation methodology and the terms in the notice. Retail applicants can bid at the cut-off price where that option is available, and their aggregate bid value across exchanges must remain within the cited INR 2-lakh retail threshold.
Other reservation and allocation provisions
SEBI’s 2023 framework provides that at least 25% of OFS shares offered are reserved for mutual funds and insurance companies, subject to the stated allocation methodology. It also states an ordinary minimum offer size of INR 25 crore, with an exception for a promoter sale needed to achieve minimum public shareholding in a single tranche.
What oversubscription means for an OFS applicant
Meeting the floor price does not guarantee that every bid will be filled. If demand exceeds the shares available in a category, allocation follows the method in the OFS notice. Read the notice for category reservations, retail discount, allocation priority, rounding and unfilled-order treatment.
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Which is better for an Indian investor: IPO, FPO or OFS?
There is no universal winner. The transaction label tells you how the shares are being offered, not whether the investment is fairly priced or suitable for your risk tolerance.
When an IPO may fit
An IPO may suit an investor who is comfortable assessing a company before it has a trading history. The key work is reading the prospectus, understanding the business and risks, checking how much of the offer is fresh capital versus OFS, and deciding whether the valuation leaves an adequate margin for uncertainty.
When an FPO may fit
An FPO offers the additional context of an already listed company. Investors can compare the offer price with the prevailing market price, review the company’s operating record and assess how a fresh issue could dilute existing holders. A discount to the market price is not by itself proof of value; the offer’s use of funds and post-issue economics still matter.
When an OFS may fit
An OFS can be relevant when an investor wants to buy an already listed company through a short exchange window and the floor price is attractive relative to the company’s disclosures and market alternatives. Because the issuer does not receive proceeds in a pure OFS, the investment case rests on the business and valuation rather than a new funding plan.
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Use the following sequence for any live offer. It separates classification, economics, price and execution so that a low headline price does not obscure a material risk.
- Confirm the issuer’s status. Is the company unlisted and making its first public offer, or already listed and conducting an FPO or OFS?
- Separate fresh shares from existing shares. Read the issue-size breakdown and identify whether the offer is entirely fresh, entirely OFS, or mixed.
- Trace the proceeds. For fresh shares, examine the stated objects, project timetable, debt reduction plans and unutilised funds. For OFS shares, identify each seller and the post-sale holding.
- Understand the price mechanism. Note whether the issue is fixed-price or book-built, the price band, the cut-off option and any retail discount or floor price.
- Read the allocation rules. Check category reservations, minimum application size, oversubscription treatment, allotment date and the effect of bidding below the discovered price.
- Check the application route. For an IPO or FPO, confirm ASBA details with your bank or intermediary. For an OFS, confirm the exchange window, broker requirements and T-day or T+1-day timing.
- Review primary disclosures. SEBI says an offer document contains information about the company, promoters, projects, financial details, fund-raising objects and issue terms. Use that document together with current exchange disclosures.
- Compare the valuation independently. Consider earnings, cash flows, debt, peers and the listed market price where available; do not treat the offer label or a discount as a recommendation.
What mistakes do investors commonly make?
- Assuming every IPO funds the company. An IPO may include an OFS, so identify the fresh-issue proportion before interpreting the use of proceeds.
- Calling every later offer an FPO. A listed company’s sale of existing shares through the exchange can be an OFS rather than a fresh-issue FPO.
- Believing OFS proceeds go to the issuer. In a pure OFS, the selling holders receive the consideration.
- Ignoring the bid price. A book-built applicant who bids below the final discovered price can miss an allotment; an OFS applicant must respect the floor-price and category rules.
- Missing the retail day. OFS timing is not the same as a multi-day IPO timetable; the cited framework places retail bidding on T+1.
- Treating a promoter sale as a verdict. A sale can have several reasons, including compliance or liquidity needs. Read the disclosed rationale and resulting shareholding.
- Relying on old thresholds. The cited OFS framework is dated January 10, 2023 and the SEBI FAQ used for definitions was updated May 15, 2025. Rules can change, so the live notice controls.
What do the current SEBI figures mean?
The following figures come from the cited SEBI materials and describe framework requirements, not guaranteed terms for every future transaction.
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| Figure | Meaning | Source context |
|---|---|---|
| 10% | Minimum OFS offer size reserved for retail investors | SEBI OFS framework, 2023 |
| 25% | Minimum OFS shares reserved for mutual funds and insurance companies, subject to the allocation method | SEBI OFS framework, 2023 |
| INR 2 lakhs | Retail investor’s aggregate OFS bid-value ceiling across exchanges under the cited framework | SEBI OFS framework, 2023 |
| INR 25 crore | Ordinary minimum OFS offer size, with a single-tranche minimum-public-shareholding exception for promoter sales | SEBI OFS framework, January 10, 2023 |
| 75% | Minimum of the net public offer mandatorily allotted to QIBs when an IPO issuer uses the QIB route | SEBI FAQ on ICDR Regulations, updated May 15, 2025 |
Always reconcile these framework figures with the latest SEBI guidance, exchange notice and offer document for the transaction you are considering.
What is the simplest decision rule?
Start with the money trail. If new shares are being created, study what the company plans to do with the capital and how dilution changes per-share economics. If existing shareholders are selling, study why they are selling, how much they will still own and whether the price compensates you for the risks. Then apply the relevant bidding, reservation and timing rules rather than treating IPO, FPO or OFS as a quality rating.
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Frequently Asked Questions
Can an IPO contain both a fresh issue and an OFS?
Yes. An IPO can combine newly issued shares with existing shares sold by current holders. The prospectus separates the two portions, so the company’s fundraising amount and the sellers’ proceeds should be read independently.
Is an OFS available on both major Indian stock exchanges?
The seller’s OFS notice identifies the exchange or exchanges used for that offer and the applicable bidding schedule. Do not assume that every OFS has identical availability or order handling across exchanges.
What happens if my IPO bid is below the final price?
In a book-built issue, a bid below the discovered cut-off price may not be eligible for allotment. Selecting the retail cut-off option, where offered, means accepting the final discovered price within the announced band.
Does an FPO always dilute existing shareholders?
A fresh-issue FPO generally increases the number of shares outstanding, which can dilute an existing holder’s percentage ownership unless that holder participates. An FPO that is only an OFS transfers existing shares and does not create new shares.
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Use the current OFS notice issued through the relevant stock exchange and the seller’s broker, then check the latest SEBI guidance. Those documents specify the floor price, dates, reservations, discounts, settlement and category-specific procedures.
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