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A UDRHP is an Updated Draft Red Herring Prospectus used in India’s pre-filing route for a main-board IPO. UDRHP-I is filed after the issuer addresses SEBI’s observations; UDRHP-II, where applicable, incorporates public comments on UDRHP-I. It is still a draft, so the final allotment price and complete offer-size details may be missing. Use it to investigate the issuer early, then base an application decision on the later Red Herring Prospectus (RHP), final prospectus and related notices.
What UDRHP stands for
UDRHP means Updated Draft Red Herring Prospectus. The term comes from the Securities and Exchange Board of India (SEBI) ICDR framework for the pre-filing route. Chapter IIA sets out this route for a main-board IPO; the ordinary Chapter II requirements continue to apply except where Chapter IIA changes them.
UDRHP-I
UDRHP-I is the updated pre-filed draft offer document submitted after the issuer has complied with SEBI’s observations on its earlier draft. It gives the market a more developed disclosure set than the initial draft, but it is not the final offer document.
UDRHP-II
After UDRHP-I is made available for public comments, the issuer may file UDRHP-II. This version incorporates relevant comments and resulting changes. Not every IPO will have a UDRHP-II; its use depends on the filing route and the issuer’s process.
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Why the word “red herring” matters
A red herring prospectus is not the final prospectus. It can omit information that depends on the final pricing and allocation process. An official UDRHP-I example warns that the document “will not contain complete particulars of the price at which the Equity Shares will be Allotted and the size of the Offer.” Treat every number as belonging to that particular version and filing date.
Where UDRHP fits in the IPO document sequence
| Stage | Document | What it tells you | What can still change |
|---|---|---|---|
| 1 | Draft offer document or DRHP | Initial business, risk, financial and proposed-issue disclosures submitted for review. | SEBI comments, structure, financial updates, objects, size and pricing details. |
| 2 | UDRHP-I | Updated pre-filed draft after the issuer responds to SEBI observations. | Complete offer size and final allotment-price particulars may be absent. |
| 3 | Public-comment period | Market participants can review the updated draft and submit comments. | Comments may lead to further explanations or amendments. |
| 4 | UDRHP-II, where filed | Updated draft reflecting public comments on UDRHP-I. | Final issue terms and price-related details can still change. |
| 5 | RHP | The document filed with the Registrar of Companies before bidding opens. | Price band, bid lot, dates and final structure are tied to the live issue and its notices. |
| 6 | Final prospectus and post-issue notices | Finalised offer information, allotment and post-issue disclosures. | Application decisions should use these later documents rather than an earlier draft. |
SEBI materials state that an updated draft document is made public for comments for at least 21 days from filing. The exact comment window and document availability should be checked in the issuer’s filing notices.
UDRHP, DRHP and RHP: the practical difference
| Document | Meaning | Typical point in the process | How an investor should use it |
|---|---|---|---|
| DRHP | Draft Red Herring Prospectus | Initial filing that starts the formal IPO review process. | Learn the business, risks, financial history and proposed use of funds; expect revisions. |
| UDRHP-I | Updated Draft Red Herring Prospectus, first update | After SEBI observations have been addressed in the pre-filing route. | Recheck disclosures and identify what changed from the earlier draft; do not assume pricing is final. |
| UDRHP-II | Updated Draft Red Herring Prospectus, second update | After public comments on UDRHP-I, if the issuer files this version. | Look for comment-driven changes, new risks, revised numbers and unresolved qualifications. |
| RHP | Red Herring Prospectus | Filed with the Registrar of Companies before bids are accepted. | Use it with the price-band, timetable, application form and later notices when deciding whether to apply. |
| Final prospectus | Post-pricing offer document | After the issue is priced and allocated. | Confirm the final terms and compare them with the earlier disclosures. |
NISM describes the DRHP as the document that begins the IPO process and says investors use the RHP and prospectus to assess credibility, financial stability, growth potential and risk.
What a UDRHP can and cannot tell you
What it is good for
- Understanding how the company makes money, who its customers are and where it operates.
- Finding company-specific, industry, regulatory, litigation and financing risks before public bidding.
- Rebuilding the historical financial picture from restated statements and notes.
- Seeing whether the issue is primarily new capital for the company or a sale by existing shareholders.
- Examining promoters, related parties, share pledges, management incentives and outstanding disputes.
- Testing the issuer’s valuation framework and the peer companies it selected.
What it may not settle
- The final price or complete offer size.
- The final price band, bid lot, issue timetable and allotment details.
- Whether later financial results, addenda or corrigenda will alter the picture.
- Whether public comments will produce another updated draft.
Do not use an early UDRHP to submit an application. Once the issue opens, read the RHP, application form, abridged prospectus, price-band notice and any addenda or corrigenda. SEBI investor guidance says applicants should read the entire RHP or prospectus, the application form and the abridged prospectus before investing.
How to find and control the correct filing
IPO documents circulate in several copies and versions. Start with document control so that a sound analysis is not built on an obsolete draft.
- Identify the issuer. Record the legal name, corporate identity number (CIN), filing date and the financial-year end used in the statements.
- Label the stage. Mark the file as DRHP, UDRHP-I, UDRHP-II or RHP. Do not call a draft an RHP simply because it contains extensive disclosures.
- Check the official posting. Use SEBI’s public-issues index and the relevant stock exchange public-issue page, then cross-check the issuer’s and lead managers’ copies.
- Record the intermediaries. Note every lead manager, the registrar and the exchanges on which the issue is proposed.
- Save the filing date. Financial figures, share counts, ownership percentages and risk wording are meaningful only in the context of the version and date.
- Build a change log. When a newer document appears, compare page by page and record changed numbers, deleted or added risk factors, altered objects of the issue, revised shareholding and new price-related disclosures.
Read risk factors before the sales narrative
The risk-factor section is deliberately prominent because it describes conditions that could damage the business, the issue or the value of the shares. An official offer-document warning says: “Investors are advised to read the risk factors carefully before taking an investment decision.”
Sort risks into usable categories
- Company-specific: dependence on a product, facility, contract, licence, founder or small number of employees.
- Industry: cyclicality, commodity costs, demand swings, technological substitution and competitive pressure.
- Regulatory: approvals, investigations, policy changes, environmental requirements and sector restrictions.
- Customer and supplier: concentration, termination rights, long payment cycles and dependence on a single source.
- Financial: leverage, refinancing, interest-rate exposure, foreign-exchange movements, weak cash generation and covenant pressure.
- Technology and operations: outages, cybersecurity, data loss, manufacturing failures and business-continuity weaknesses.
- Litigation and compliance: material civil, criminal, tax, regulatory or insolvency matters involving the issuer, promoters or group entities.
- Issue-related: dilution, a thin public float, sale by existing shareholders, uncertain use of proceeds and the possibility that trading liquidity will be limited.
Signals that deserve closer work
- A risk is repeated in several sections or placed unusually early.
- The filing quantifies a possible loss, concentration or liability instead of using general wording.
- The risk statement conflicts with the business section’s claim of diversification, stable demand or strong controls.
- A large risk appears without a measurable mitigation plan, insurance explanation or contingency.
- The company reports a favourable trend while receivables, inventory, debt or one-off income move in the opposite direction.
Do not count risk factors as if each had equal probability. Convert the important ones into questions: What event would trigger the loss? How quickly could management respond? Which financial line would show the impact first? Is the risk already visible in the historical statements?
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Map how revenue is earned
Write a one-page description using the filing’s own categories: products or services, customer types, contract terms, sales channels, geographies, production or delivery capacity and major dependencies. Distinguish recurring revenue from project, milestone, transaction or commodity-linked revenue. Check whether the accounting policy explains when revenue is recognised.
Test the growth story
Management may cite a large market, a high growth rate or a competitive advantage. Treat each as a claim, not a guarantee. Check the definition of the market, the geographic scope, the period measured, the source named in the filing and whether the company’s reported revenue actually supports the claimed position. A market-size estimate is not the same as an addressable market, and an addressable market is not a forecast of the issuer’s sales.
Look for capacity and concentration limits
Compare installed capacity with utilisation, planned expansion, customer concentration, supplier concentration and geographic exposure. A growth plan that depends on a new plant, a major licence, one customer renewal or imported inputs has a different risk profile from organic growth spread across established operations.
Rebuild the financial picture
Use the restated consolidated and standalone statements, notes and auditor’s reports. Record the exact periods and accounting basis beside every figure; never compare a consolidated number in one year with a standalone number in another.
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Income statement checks
- Separate revenue growth from changes caused by acquisitions, disposals, currency movements or accounting policy.
- Compare gross margin, operating margin and net margin over each presented period.
- Identify one-off gains, exceptional items, subsidies, fair-value movements and unusually low tax expense.
- Check whether customer advances, contract assets or deferred revenue affect the timing of reported sales.
Cash-flow checks
- Compare profit with cash generated from operations.
- Explain any persistent gap through receivables, inventory, payables, taxes or non-cash income.
- Review capital expenditure against the stated expansion plan and depreciation.
- Check whether free cash flow is being used for debt service, dividends, acquisitions or other commitments.
Balance-sheet and liability checks
- Measure debt, lease liabilities, interest cost and maturity dates against operating cash flow.
- Review working-capital days and whether receivables are concentrated in a few customers.
- Read contingent liabilities, guarantees, commitments and related-party balances in the notes.
- Read every auditor qualification, emphasis of matter and internal-control observation; do not dismiss wording as boilerplate.
A sudden improvement in profit deserves an explanation tied to cash, working capital and one-off items. A profitable company can still require substantial external funding if cash is trapped in receivables or inventory.
Follow the money in the offer
Separate a fresh issue from an offer for sale (OFS) before judging what the IPO will accomplish.
Fresh issue
Shares issued by the company raise new capital. The objects section should state the amount, project or purpose, implementation timetable, funding already spent and remaining requirement. Typical uses include capital expenditure, debt repayment and general corporate purposes, but the filing-specific amounts and conditions control.
Offer for sale
Existing shareholders sell their shares. That portion transfers ownership and sends the sale proceeds to those selling holders rather than to the company. An OFS therefore does not, by itself, fund expansion or reduce company debt.
Build an objects-of-issue table
| Item to record | Question to ask |
|---|---|
| Amount | What exact amount is proposed, and is it expressed before or after issue expenses? |
| Purpose | What asset, repayment or corporate activity will receive the funds? |
| Timing | When will the spending occur, and what milestones must be met? |
| Status | How much has already been spent or committed, and from which funding source? |
| Execution risk | What permits, vendors, land, technology or customer contracts are required? |
| Unallocated amount | How much is available for general corporate purposes, and what limits apply? |
Then connect each use to a risk. A debt repayment plan can lower interest expense but leave the company with less cash for growth; a capacity project can increase sales but also create construction, approval and utilisation risk.
Examine promoters, management and conflicts
Read the sections on promoters, promoter-group entities, directors, senior management and group companies together rather than treating them as biographies.
- Record current and post-issue ownership, voting control and any change caused by dilution.
- Check share pledges, encumbrances, lock-ins and prior transfers.
- Review remuneration, commissions, guarantees and other benefits paid to connected persons.
- Map related-party purchases, sales, loans, leases and outstanding balances; ask whether comparable transactions occur with independent parties.
- Read group-company performance, defaults, insolvency proceedings, regulatory actions and material litigation.
- Identify whether key customers, suppliers, landlords, lenders or service providers are linked to promoters or directors.
Ownership sold in the IPO can reduce an existing holder’s stake without necessarily reducing control. Compare the pre-issue and post-issue shareholding tables and note voting arrangements, superior rights or other control mechanisms disclosed in the filing.
Test valuation and issue structure
Read the “Basis for Issue Price” skeptically
Identify the earnings period, accounting basis, peer group, price-to-earnings or other multiple, return metrics and any non-GAAP adjustments. Recalculate the comparison using like-for-like inputs: the same period, consolidated or standalone statements consistently, similar industry definitions and comparable leverage.
Question the peer set
A peer selected from a different geography, business mix, growth stage or debt profile can make a multiple appear favourable without being genuinely comparable. Check whether the filing explains exclusions and whether the issuer’s margins, growth and return on capital are materially different from the selected peers.
Review structure and dilution
- Note the proposed price band when it becomes available and the implied equity value at both ends.
- Record the bid lot, reservation categories, employee or shareholder quotas and anchor-investor provisions.
- Check pre-IPO placements, conversion rights, options and other instruments that can affect the share count.
- Read lock-in periods for promoters and other shareholders, and identify when additional shares may become tradable.
- Separate an attractive historical multiple from a valuation that depends on unproven forecasts.
At the UDRHP stage, the price band and final offer size may not yet be published. Wait for the RHP and price-band notice before calculating the amount required for an application or treating a valuation as final.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Compare two IPOs or two filing versions without being misled
Use a fixed comparison sheet. For two issuers, compare the same financial periods and accounting bases; for two versions of one issuer, highlight every change.
| Comparison axis | What to record |
|---|---|
| Document control | Stage, filing date, financial cut-off date, exchanges and lead managers. |
| Issue composition | Fresh issue, OFS, proposed shares, dilution and post-issue ownership. |
| Revenue quality | Growth source, customer concentration, contract duration and cash conversion. |
| Profitability | Margins, one-off items, tax effects and return metrics on a consistent basis. |
| Balance sheet | Debt, leases, working capital, contingent liabilities and auditor qualifications. |
| Governance | Promoter pledges, related parties, remuneration, litigation and regulatory exposure. |
| Valuation | Price, implied metrics, peer definitions, earnings period and adjustments. |
| Risk movement | New, removed, expanded or quantified risk factors and unresolved issues. |
| Use of proceeds | Amount, timetable, project status, repayment plan and general-purpose share. |
When comparing UDRHP with RHP, mark changed share counts, object-of-issue amounts, ownership percentages, financial periods, risk wording and all price-related disclosures. A shorter risk section is not automatically an improvement; determine whether wording was clarified, moved or removed.
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Finish the process before applying
- Download the latest RHP and confirm that it matches the issuer, issue and filing stage.
- Read the entire RHP, application form and abridged prospectus, not only the summary or “investment highlights.”
- Check the announced price band, bid lot, opening and closing dates, minimum application amount and reservation categories.
- Read every addendum, corrigendum, price-band notice and later clarification.
- Update the financial analysis for any newer period included after the UDRHP.
- Confirm the final objects of the issue, OFS allocation, promoter holding, lock-ins and any pre-IPO placement.
- Write down the two or three risks that would change your decision and the evidence that would signal they are materialising.
- Decide independently; the issuer’s forecasts, peer comparisons and issue marketing are not guarantees of returns.
SEBI’s General Information Document for Investing in Public Issues states that bidders and applicants should rely on their own examination of the issuer and the offer and carefully read the RHP or prospectus before investing.
Common mistakes and how to correct them
Mistake: treating UDRHP numbers as final
Correction: label every figure with its document stage and date, then replace it with the RHP or final figure when available.
Mistake: assuming an IPO automatically funds the company
Correction: split fresh issue proceeds from OFS proceeds and trace each fresh-issue rupee to an object and timetable.
Mistake: reading only the business highlights
Correction: read risk factors first, then reconcile the narrative with financial statements, notes, litigation and related-party sections.
Mistake: comparing incompatible multiples
Correction: use the same earnings period, accounting basis, industry definition and leverage context for every company.
Mistake: ignoring cash conversion
Correction: reconcile profit with operating cash flow and investigate receivables, inventory, advances and one-off gains.
Mistake: relying on a single version
Correction: maintain a document change log through UDRHP-I, UDRHP-II, RHP, final prospectus and subsequent notices.
A compact UDRHP reading worksheet
Complete these fields before moving from research to an application decision:
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- Latest financial year and interim period covered.
- Fresh issue amount, OFS amount and estimated post-issue share count.
- Top three revenue sources and top customer or supplier concentrations.
- Operating cash flow versus reported profit for each presented period.
- Total debt, interest cost, contingent liabilities and auditor qualifications.
- Promoter ownership before and after the issue, pledges and lock-ins.
- Material related-party transactions, litigation and regulatory actions.
- Each object of the issue, amount, timetable and execution dependency.
- Peer set, valuation metric, earnings period and adjustments.
- Five material risks and the evidence that would confirm or weaken each one.
- RHP price band, bid lot, dates and every later amendment.
This worksheet does not produce a guaranteed outcome. It keeps the decision tied to disclosed evidence and prevents a draft document, a promotional claim or an incomplete price discussion from being mistaken for final terms.
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