From closing to listing
Once bidding closes, the sequence is tightly scheduled.
- Basis of allotment finalised. The registrar, with the exchange, applies the rules for each category — lottery for oversubscribed retail, proportionate or discretionary elsewhere.
- Allotment published. You can check on the registrar's site, on BSE, or in your broker's app.
- Unblocking and debit. Allotted applicants are debited for their shares; everyone else has their block released.
- Shares credited to demat accounts.
- Listing. Trading begins on the exchange.
The gap from issue close to listing is short — a matter of a few working days under the current timeline. The exact dates for each issue are published in the RHP.
Listing day
Listing day starts with a special pre-open session for the newly listed stock. Orders are collected and a single opening price is discovered by auction, exactly like the daily pre-open described in the Basics module.
That discovered price is the listing price. It has no fixed relationship to the issue price.
- Listing above issue price → a listing gain for those allotted
- Listing below issue price → a listing loss, and this happens regularly
Issue price ₹250. The special pre-open discovers an opening price of ₹310.
An allottee with one lot of 60 shares has a paper gain of ₹60 × 60 = ₹3,600, if they sell at ₹310.
If instead the pre-open discovers ₹224, that same allottee is sitting on a loss of ₹1,560 the moment trading starts.
Both outcomes are entirely normal. Neither was knowable in advance.
Newly listed stocks also have special price band treatment on and shortly after listing day, designed to contain extreme moves. Your broker's IPO screen or the exchange notice states the applicable bands for that stock.
Grey Market Premium (GMP) — the honest version
GMP is a number widely quoted before listing: "GMP ₹85" means unlisted dealings suggest the stock might list around ₹85 above the issue price.
Here is what it actually is.
The grey market is an informal, unofficial market where people trade IPO applications and expected allotments before listing. It operates outside the exchanges. It is not regulated by SEBI. Contracts are not legally enforceable. Settlement runs on trust between a small number of dealers.
The number you see quoted on websites and social media is a reported price from this informal market. That means:
- It is not an official price. Nobody publishes it under any regulatory obligation.
- Volumes are small. A few small trades can move the quoted number substantially.
- It is easy to influence. A quoted GMP creates enthusiasm for an issue, and people who benefit from enthusiasm are in a position to influence the quote.
- It changes daily, sometimes sharply, right up to listing.
- It is frequently wrong. Issues with high GMP have listed flat or at a discount. Issues with modest GMP have listed strongly.
If you want a demand signal, the exchange-published subscription figures by category are at least official, verifiable, and produced under a regulatory framework. They still do not predict post-listing performance.
Selling on listing day, or holding
Both are legitimate, and the choice should follow from why you applied.
If you applied for a listing gain, then selling on listing day is consistent with your reason. Decide beforehand what you would do at various opening prices, so the decision is not made in the first volatile minutes.
If you applied because you want to own the business for years, a listing-day move of 20% in either direction is noise, and your reason for holding has not changed.
The mistake is switching stories: applying for a quick gain, seeing a loss, and retroactively deciding it is a long-term investment. That is not a decision, it is an avoidance of one.
Lock-in expiries after listing
Several tranches of shares become sellable at scheduled points after listing — anchor investor lock-ins, and other pre-IPO shareholder lock-ins under the applicable rules.
These dates are calculable from the listing date and disclosed in the offer document. Around them, additional supply can reach the market. It does not automatically mean the price falls, but it is a known, scheduled event rather than a surprise.
Key takeaways
- The listing price is discovered in a special pre-open auction and has no fixed link to the issue price.
- Listing below the issue price is common and entirely normal.
- GMP comes from an informal, unregulated market with small volumes and no legal standing.
- Exchange subscription data is at least official; GMP is not.
- Decide your listing-day plan in advance, and do not change your reason for holding after the fact.
Check your understanding
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