Green Shoe Option in IPO: How Over-Allotment and Price Stabilisation Work in India

Most IPO investors read the price band, the lot size and the grey market chatter, and skip one paragraph in the offer document that can matter a great deal in the first month of trading. That paragraph covers the green shoe option in IPO issues, a provision that lets the issue be over-allotted by up to 15% of the issue size, with the extra money parked aside to buy shares back from the market if the price sags after listing.

It sounds technical, and it is. But the idea is simple enough. Someone is appointed to stand behind the stock for a few weeks, with a fixed amount of money and a fixed set of rules. We’ll go through those rules as SEBI has written them, then run one hypothetical IPO through three different listing scenarios so you can see where the shares and the money end up each time.

What the green shoe option in IPO issues actually is

SEBI’s Issue of Capital and Disclosure Requirements Regulations, 2018 (the ICDR Regulations) define a green shoe option as an option of allotting equity shares in excess of the shares offered in the public issue, as a post-listing price stabilising mechanism. SEBI’s own FAQ on the ICDR Regulations puts it more plainly: shares are issued in excess of the issue size, to a maximum of 15%, to stabilise the price after listing.

So there are two moving parts. First, more shares are handed out to investors than the base issue size. Second, the money collected for those extra shares is not given to the company straight away. It sits in a separate account, ready to be used for buying shares in the market if needed. What happens to that money depends entirely on how the stock trades after listing.

The extra shares don’t come out of thin air on day one. They are borrowed, usually from the promoters, and they have to be returned once the stabilisation window closes. That borrowing is the heart of the whole arrangement.

The rules under Regulation 57 of the ICDR

The mechanics sit in Regulation 57 of the ICDR Regulations text, titled “Price stabilisation through green shoe option”. Here is what it requires, in plain terms:

• Shareholder approval. The general meeting resolution that approves the public issue must also authorise the company to allot shares to the stabilising agent, if required, when the stabilisation period ends.
• A stabilising agent. The issuer must appoint one of its lead managers as the stabilising agent, who is responsible for the whole price stabilisation process.
• Agreements signed early. Before the draft offer document is filed, the issuer and the stabilising agent must sign an agreement covering the terms of the green shoe option, including the agent’s fees and expenses. Before the offer document is filed, the agent must also sign an agreement with the promoters or pre-issue shareholders who will lend shares.
• A hard cap of 15%. The number of shares that may be borrowed for over-allotment cannot exceed fifteen per cent of the issue size. Within that cap, the lead manager decides the actual amount in consultation with the stabilising agent.
• Who can lend. In an IPO, promoters and pre-issue shareholders may lend shares up to the proposed over-allotment. In a further public offer, it is promoters and pre-issue shareholders holding more than five per cent.
• Demat and pro-rata. The borrowed shares must be in dematerialised form, and they are allocated pro-rata to all successful applicants.
• Disclosure. The draft offer document and offer document must carry the material disclosures about the green shoe option set out in Part A of Schedule VI.

That pro-rata point is easy to miss. If you get an allotment in an issue with a green shoe, some of the shares in your demat account may technically be borrowed promoter shares. For you as a holder it makes no practical difference. They are ordinary listed shares like the rest.

How price stabilisation works after listing

Once the shares list, the clock starts. Under Regulation 57(3), the stabilisation process can run for a period not exceeding thirty days from the date on which the stock exchanges give trading permission for the shares allotted in the issue.

During that window, the stabilising agent decides when to buy, how many shares to buy and at what price. The regulation leaves those calls to the agent. The money for these purchases comes only from one place: the special bank account where the applicants’ money for the over-allotted shares was credited. That account is distinct from the issue account. Shares bought from the market go into a separate special account with a depository participant.

The intuition is straightforward. If demand is weak after listing and the price slips, the agent can step in as a buyer, which adds demand at a point when sellers dominate. If the stock trades comfortably, there is no reason to buy at all.

A green shoe is a cushion with a fixed size. Once the money in the special account is spent, the stabilising agent has nothing left to buy with.

The agent also has to report. Regulation 57(10) requires a report to the stock exchange on a daily basis during the stabilisation period and a final report to SEBI in the format specified in Schedule XV. The agent must also keep a register for at least three years from the end of the stabilisation period, listing who lent shares and how many, the price, date and time of each stabilisation trade, and details of any allotment by the issuer at the end.

What happens when the 30 days are over

This is where the borrowed shares get settled. There are two routes, and most real outcomes are a mix of both.

Shares bought back from the market are returned. Whatever the agent bought during stabilisation must go back to the promoters or pre-issue shareholders who lent them immediately, and in any case not later than two working days after the stabilisation period ends.

Any shortfall is made up by fresh allotment. If the agent could not buy back as many shares as were over-allotted, the issuer allots new shares at the issue price for the shortfall, within five days of the stabilisation period closing. These go to the special depository account and are handed to the lenders in place of the shares they lent. The issuer then applies for listing of these extra shares on the exchanges where the issue is listed.

The money follows the shares. For any shares the issuer allots this way, the agent remits the corresponding money to the company from the special bank account. Whatever is left after that remittance, and after the agent’s stabilisation expenses, is transferred to the Investor Protection and Education Fund set up by SEBI, and the special account is closed.

Read that last part twice. If the agent buys shares below the issue price, the gap between what applicants paid and what the agent spent is not the agent’s profit. Under Regulation 57(9) it goes to the Investor Protection and Education Fund after expenses.

A worked example: one IPO, three listings

Let’s take a hypothetical issuer, Tapti Wires Ltd. These numbers are made up purely to show the arithmetic.

• Base issue size: 1,00,00,000 shares at an issue price of ₹200, so ₹200 crore.
• Green shoe: 15% of the issue size, the maximum allowed, so 15,00,000 shares borrowed from the promoter.
• Total shares allotted to investors: 1,15,00,000.
• Money for the over-allotted shares in the special bank account: 15,00,000 × ₹200 = ₹30 crore.

Scenario 1: a weak listing

Tapti Wires lists and drifts below ₹200 within a few sessions. The stabilising agent buys in the market through the window and picks up all 15,00,000 shares at an average of ₹191. That costs 15,00,000 × ₹191 = ₹28.65 crore.

All the borrowed shares are covered, so the issuer allots nothing extra and receives nothing from the special account. The promoter gets back the 15,00,000 shares within two working days of the window closing. The remaining ₹1.35 crore (₹30 crore minus ₹28.65 crore), less the agent’s expenses, goes to the Investor Protection and Education Fund. The company’s share count stays at the base issue size plus its pre-issue shares.

Scenario 2: a strong listing

Now suppose Tapti Wires lists well and never trades near ₹200 during the window. The agent has no reason to buy and buys nothing.

The full 15,00,000 shares are a shortfall, so the issuer allots 15,00,000 new shares at ₹200 within five days of the window closing. They go to the promoter in place of the borrowed ones. The agent remits the full ₹30 crore to the company. In effect, the issue has grown to 1,15,00,000 shares and the company has raised ₹230 crore instead of ₹200 crore. The extra 15,00,000 shares are fresh equity, which is a modest addition to the share count that existing and new shareholders should factor in.

Scenario 3: a mixed month

This is the more realistic case. The stock wobbles in the first week, then recovers. The agent buys 6,00,000 shares at an average of ₹197, which costs 6,00,000 × ₹197 = ₹11.82 crore, and then stops buying as the price firms up.

At the end of the window, those 6,00,000 shares go back to the promoter. The remaining 9,00,000 are a shortfall, so the issuer allots 9,00,000 new shares at ₹200, and the agent remits 9,00,000 × ₹200 = ₹18 crore to the company. What’s left in the special account is ₹30 crore minus ₹11.82 crore minus ₹18 crore, which is ₹18 lakh. After expenses, that balance goes to the Investor Protection and Education Fund.

The issuer only gets the green shoe money for shares it actually allots at the end. The weaker the listing, the more of that money is spent supporting the price instead.

Lay the three side by side and the pattern is clear. A weak listing uses the cushion and leaves the company’s share count unchanged. A strong listing leaves the cushion untouched and turns it into extra capital for the issuer. Everything in between is a split.

What a green shoe does not do

A few misreadings come up often enough to address directly.

It is not a price guarantee. Nothing in Regulation 57 promises that the stock will hold the issue price. The agent decides timing, quantity and price, and can only spend what is in the special bank account. In our example that was ₹30 crore against a ₹200 crore issue. A heavy wave of selling can exhaust that quickly.

It does not last. The window is capped at thirty days from trading permission. Whatever happens in month two is the market’s business alone.

It does not change your allotment odds in a way you can plan around. The over-allotted shares are spread pro-rata across all successful applicants. How allotment itself works, category by category, is a separate subject, which we cover in our guide to the IPO basis of allotment.

It is not the same as an offer for sale. The lenders get their shares back at the end, either the ones bought from the market or fresh ones from the issuer. They are not selling out through the green shoe. If you want the difference between fresh capital and promoter selling in an IPO, our piece on fresh issue vs offer for sale walks through it.

What to check in the offer document

If an issue you are looking at carries a green shoe option, the offer document has to disclose it. These are the questions we’d want answered before applying:

1. Is there a green shoe option at all, and how many shares are proposed to be over-allotted? The cap is 15% of the issue size, but the actual number can be lower.
2. Which lead manager is the stabilising agent?
3. Who is lending the shares: the promoters, other pre-issue shareholders, or both, and how many each?
4. What fees and expenses does the stabilising agent’s agreement allow? These come out of the special account before any balance goes to the Investor Protection and Education Fund.
5. If every over-allotted share ends up as a fresh allotment, how much does the company’s total share count rise by?

During the first thirty days, the stabilising agent has to report to the stock exchange every day. After the window closes, any fresh allotment to cover the shortfall needs its own listing application, so the extra shares add to the company’s listed share count.

A green shoe doesn’t make a weak issue strong. It gives a new listing a limited, rule-bound buffer in its first month, and it changes how much money the company finally raises. Read it alongside the business, the valuation and the use of proceeds, not instead of them. Our IPO investing in India guide covers that bigger checklist.

Disclaimer: This article is for educational purposes only and is not investment advice or a recommendation to buy or sell any security or apply to any public issue. Tapti Wires Ltd and all prices and quantities in the worked example are hypothetical. Investing in IPOs and equities carries risk. Please read the offer document and do your own research or consult a SEBI-registered investment adviser before making investment decisions.