What is an IPO: A Complete Guide for Indian Investors by HMA Wealth

In November 2021, I applied for one lot of the Paytm IPO 6 shares through my bank’s ASBA facility, ₹12,900 blocked at the cap price of ₹2,150. Twitter that week was full of people flipping IPO allotments for quick listing-day profit, and I genuinely expected to be one of them. I got allotted all 6 shares.

On listing day, the stock closed around 27% below that ₹2,150 issue price, and my ₹12,900 was worth meaningfully less by the end of that first trading session alone. Nothing about the application process had gone wrong I understood what is an IPO and how to apply for one well enough by that point. What I didn’t understand was that a hyped IPO and a good investment aren’t automatically the same thing, and that lesson cost me real money to learn.

That’s the honest starting point for explaining what is an IPO properly. Most explanations focus on the mechanics of applying and stop there, without getting into what actually determines whether that application turns into a win or a loss. HMA Wealth’s version of this topic tries to cover both.

What Is an IPO, in Plain Terms?

An IPO, or Initial Public Offering, is the process through which a privately held company sells shares to the public for the first time and gets listed on a stock exchange in India, that’s NSE or BSE. Before the IPO, ownership sits with founders, employees, and private investors like venture capital or private equity firms; after it, anyone with a demat account can buy and sell shares of that company on the open market. Understanding what is an IPO at this mechanical level is straightforward; understanding whether a specific one is worth applying for is the harder, more useful question.

The company does this mainly to raise capital, whether for expansion, paying off debt, or giving early investors an exit route. For you as a retail investor, it’s your first opportunity to own a piece of a company that wasn’t previously available to buy on the exchange at all.

What Actually Happens Between a Company Filing for an IPO and Its Shares Actually Trading?

The path from “company decides to go public” to “shares trading on your broker app” runs through several distinct stages, each with its own real timeline.

1. DRHP filing: the company files a Draft Red Herring Prospectus with SEBI a detailed document covering financials, business risks, how the raised money will be used, and the company’s own view of its competitive position.
2. SEBI review: the regulator examines the DRHP for completeness and disclosure quality, though this isn’t SEBI vouching for the company as a good investment, only confirming the required information is disclosed.
3. Price band announcement: the company and its merchant bankers set a floor price and a cap price for the shares, based on demand assessment and comparable company valuations.
4. Subscription window opens: typically for 3 business days, during which investors across categories place bids within the price band.
5. Book building and allotment: the final issue price gets discovered based on demand at different price points, and shares are allotted to successful applicants.
6. Listing: shares begin trading on the exchange, usually about a week after the subscription window closes.

How Does Book Building Actually Decide the Final IPO Price?

Book building is the mechanism through which an IPO’s actual issue price gets discovered, rather than the company simply naming a fixed number upfront. Investors bid at any price within the announced band say, ₹2,080 to ₹2,150 and the company aggregates demand at each price point across the whole book.

As a retail investor, you’ll usually see an option to bid “at cut-off price” rather than picking a specific number yourself. This means you’re agreeing to pay whatever the final price turns out to be, which maximises your chances of allotment compared to bidding below where demand ultimately settles. It’s a small mechanical choice, but it’s the one most retail applicants actually use, myself included on that Paytm application.

What Are Anchor Investors, and Why Do They Matter Before the IPO Even Opens?

A day before the public subscription window opens, large institutional investors mutual funds, insurance companies, sovereign funds can commit to buying a portion of the issue at a fixed price, becoming what’s called anchor investors. Their participation and the price they’ve agreed to often gets reported the same day, and retail investors watch it closely as an early demand signal.

It’s worth treating this the same way as GMP, though: informative, not decisive. Strong anchor investor participation tells you serious institutional money believes the price is reasonable, but institutions can be wrong too, and anchor allocations have gone into IPOs that still listed poorly. I noticed Paytm did attract genuine anchor investor interest before its own listing, which is part of why the eventual outcome caught so many retail applicants, including me, off guard at the time.

What Should You Actually Check in the DRHP Before Applying?

Most retail applicants, myself included on my first few IPOs, skip the DRHP entirely and go straight to GMP trackers and social media sentiment. That’s backwards, given the DRHP is the one document with actual audited financials and legally mandated risk disclosures behind it.

A few sections worth actually reading, not skimming, before you apply for any IPO, not just the ones with the loudest hype cycle around them:

• Objects of the issue is the money raised going toward genuine business growth, or mostly toward paying off existing debt or letting early investors exit? The second isn’t automatically bad, but it changes what you’re actually funding.
• Risk factors companies are legally required to disclose material risks here, and they’re often more candid than the marketing around the IPO would suggest.
• Financial statements and growth trends revenue and profit trends over the last 3 years tell you more than any single quarter’s number highlighted in an ad.
• Related-party transactions significant dealings between the company and entities linked to its promoters are worth understanding, since they can affect how cleanly profits actually flow to shareholders like you.

None of this takes more than 30-45 minutes for a reasonably prepared DRHP summary, and it’s genuinely more useful time spent than checking GMP five times a day in the week before listing.

How Do You Actually Apply for an IPO as a Retail Investor?

The process itself is genuinely simple now, mostly thanks to ASBA and UPI, even though understanding what is an IPO’s underlying mechanics takes more effort than the application form does.

1. Choose your application route most brokers like Zerodha and Groww let you apply directly through their app using a UPI mandate, or you can apply through your bank’s net banking ASBA facility.
2. Understand what ASBA actually does: your application amount gets blocked in your bank account, not debited. If you’re not allotted shares, or only partially allotted, the blocked amount (or the unused portion) is released back automatically, without you doing anything.
3. Check which investor category you fall under. Retail Individual Investors (RII) can apply for up to ₹2 lakh per application, with a separate reserved portion of the issue set aside specifically for this category under SEBI’s rules commonly around 35% of a mainboard issue, though the exact split varies by issue type distinct from the Qualified Institutional Buyer (QIB) and Non-Institutional Investor (NII) portions, which typically get the larger remaining share between them.
4. Approve the UPI mandate request promptly once you’ve submitted your bid, since a delayed or missed approval can mean your application doesn’t go through at all, regardless of your intended bid.

Why Did I Get Allotted Shares When So Many Others Didn’t?

When an IPO’s retail category is oversubscribed, which most heavily hyped ones are, allotment doesn’t work on a first-come-first-served basis. It’s decided through a computerised lottery or proportionate system, meaning your odds depend on how oversubscribed the retail portion was, not how fast you clicked submit.

I got allotted on Paytm purely because retail lottery outcomes are genuinely random within the applicant pool, not because I did anything differently from someone who didn’t get shares. Understanding this matters because it means allotment itself tells you nothing about whether the company or the price was actually good value it’s a separate, unrelated roll of the dice from the investment decision itself.

What Is Grey Market Premium, and Why Shouldn’t You Treat It Like a Guarantee?

Grey Market Premium (GMP) is an unofficial, informal indicator of what an IPO might list at, based on unregulated trading that happens outside any exchange, before the stock is actually listed. It gets quoted constantly on IPO tracking sites and social media in the days before listing.

Here’s the part that mattered most in my own case: GMP for Paytm’s IPO had actually turned negative in the days before listing, which in hindsight was a real signal I chose to ignore because everything else about the hype cycle felt too positive to take seriously. GMP isn’t SEBI-recognised, isn’t based on any regulated exchange mechanism, and can move sharply or reverse entirely right up to the listing itself. Treat it as one noisy data point at most, never as a forecast you can rely on.

What Happens on Listing Day, and Why Can It Be So Volatile?

Listing day price discovery can be genuinely sharp, since the stock is trading publicly for the first time and the market is still figuring out where real demand and supply actually meet, independent of whatever the IPO price band suggested. Newly listed stocks can see wider price swings in their first few sessions than an established, heavily traded stock typically would.

This volatility cuts both ways some IPOs list well above issue price and hold those gains, others list at a discount and take months or years to recover, if they do at all. Confirm current listing-day trading rules and any special provisions for newly listed stocks on the NSE website, since these mechanics get refined by the exchanges and SEBI over time.

So Is Applying for IPOs Actually Worth It for a Retail Investor?

It can be, but not for the reason most of the hype suggests. Once you actually understand what is an IPO beyond the application form the DRHP, the price discovery, the randomness of allotment, the noise around GMP the IPOs worth applying for are the ones where you’d genuinely want to own the business at that valuation even if there were no listing-day pop at all. Reading the DRHP’s financials and risk factors matters more than checking GMP the night before.

If IPO investing feels too concentrated or unpredictable for where you are right now, HMA Wealth’s guide to the different types of mutual funds covers a more diversified route to equity exposure, and our explainer on how compounding actually works is worth reading alongside this if you’re weighing a single IPO bet against steady long-term investing instead. Whatever amount you do decide to risk on an IPO application, it’s worth sizing it against your actual budget rather than your excitement level our piece on the 50/30/20 rule for Indians is a reasonable starting point for that.

This article reflects personal experience with my own IPO application and general research into how the SEBI-regulated process works it isn’t a recommendation to apply for any specific IPO, and HMA Wealth isn’t a SEBI-registered investment adviser or research analyst. IPO rules, category limits, and listing mechanics can change, so verify current details before applying, and never treat an allotment or a listing-day price as anything more than what it actually is: one data point in a decision that deserves more research than a five-minute application form usually gets.

FAQs – What is an IPO

Written by Hasanraza Ansari

Founder of HMA Wealth · Empowering India’s Next Generation of Investors

Finance & Operations Expert with 9+ years of experience, dedicated to simplifying wealth creation and helping Indians invest smarter through HMA Wealth.

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Educational content only. This isn’t personalized financial advice, please do your own research or consult a qualified professional before making financial decisions.