What is a Green Shoe Option? Meaning, SEBI Rules, IPO, FPO & Practical Examples

What is a Green Shoe Option?

A Green Shoe Option (GSO) is a mechanism available in a public issue of securities that allows an issuer to stabilize the market price of its shares after listing.

In India, a Green Shoe Option can be used in a public issue, which includes:

• Initial Public Offer (IPO) – when an unlisted company offers its shares to the public for the first time.

• Further Public Offer (FPO) – when an already listed company makes another public issue of shares.

The Green Shoe Option is governed by the SEBI (Issue of Capital and Disclosure Requirements) Regulations, 2018 (SEBI ICDR Regulations).

The name "Green Shoe" originated from the Green Shoe Manufacturing Company in the United States, which was the first company to use this mechanism.

Why is a Green Shoe Option Needed?

Sometimes a public issue receives applications many times greater than the number of shares offered.

Suppose ABC Ltd. plans to issue 1 crore shares.

Investors apply for 7 crore shares.

This means the issue is oversubscribed 7 times.

After listing, thousands of unsuccessful investors may rush to buy shares from the stock market, causing the share price to rise sharply. On the other hand, if investors begin selling immediately after listing, the price may fall significantly.

The Green Shoe Option helps reduce such abnormal price movements and promotes an orderly market.

How Does the Green Shoe Option Work?

A company making a public issue may provide a Green Shoe Option, generally allowing over-allotment of up to 15% of the issue size for the purpose of price stabilization.

A Stabilising Agent (SA), generally one of the Book Running Lead Managers (BRLMs), is appointed to manage the stabilization process.

The Stabilising Agent uses shares borrowed from eligible shareholders and, during the stabilization period, either purchases shares from the market or returns the borrowed shares depending on market conditions.

Example 1 – Green Shoe Option - IPO

Suppose ABC Technologies Ltd., an unlisted company, launches its IPO.

• Issue Size: 1,00,00,000 shares

• Issue Price: ₹200 per share

• Green Shoe Option: 15%

Maximum additional shares may be over-allotted:

15% × 1,00,00,000 = 15,00,000 shares

Therefore,

• Original Issue = 1,00,00,000 shares

• Over-allotment under Green Shoe = 15,00,000 shares

• Shares allotted initially = 1,15,00,000 shares

The Stabilising Agent borrows these additional shares from eligible shareholders and allots them to investors.

Example 2 – Green Shoe Option - FPO

Suppose XYZ Cement Ltd., a listed company, announces a Further Public Offer.

• FPO Size: 50 lakh shares

• Issue Price: ₹450

• Green Shoe Option: 15%

Maximum over-allotment:

15% × 50 lakh = 7.5 lakh shares

If demand is exceptionally high, these additional shares may be over-allotted to facilitate price stabilization after listing.

Thus, the Green Shoe Option is not limited to IPOs; it is available in public issues, including FPOs, subject to the SEBI ICDR Regulations.

How Does Price Stabilization Work?

The Green Shoe Option is intended to prevent excessive volatility after listing.

Situation 1 – Market Price Falls

IPO/FPO Price = ₹500

After listing, the market price falls to ₹470.

The Stabilising Agent purchases shares from the stock market.

As demand increases, the falling price is supported and excessive volatility is reduced.

Situation 2 – Market Price Rises

Suppose the market price rises to ₹560.

The Stabilising Agent returns the borrowed shares using the over-allotment mechanism rather than purchasing shares at the higher market price.

This helps maintain an orderly market and reduces abnormal price movements.

Is Green Shoe Option Available in an OFS?

Students often confuse a Green Shoe Option with an Offer for Sale (OFS).

The answer depends on the type of OFS.

OFS Forming Part of a Public Issue

Sometimes a public issue consists of:

• Fresh Issue by the company, and

• Offer for Sale by existing shareholders.

Example:

• Fresh Issue = ₹800 crore

• OFS = ₹200 crore

• Total Public Issue = ₹1,000 crore

Since this is a public issue, a Green Shoe Option may be provided if the SEBI conditions are satisfied.

OFS Through the Stock Exchange Mechanism

Listed companies may also sell promoter shares through the SEBI OFS mechanism on the stock exchange.

This is not a public issue.

Therefore, a Green Shoe Option is not available for such OFS transactions.

Practical Illustration

Imagine a cinema hall selling tickets for a blockbuster movie like Odyssey.

There are 1,000 seats, but 8,000 people want tickets.

The management keeps 150 additional emergency seats (15%) available if demand is exceptionally high.

These additional seats help accommodate more viewers and reduce disappointment.

Similarly, in a public issue, a Green Shoe Option helps manage excess demand and contributes to a stable market after listing.

Advantages

• Helps stabilize the share price after listing.

• Reduces excessive volatility.

• Increases investor confidence.

• Facilitates an orderly market.

• Improves the success of a public issue.

• Supports efficient price discovery.

Limitations

• Available only in public issues under the SEBI ICDR Regulations.

• Generally limited to 15% of the issue size.

• Not available for the separate stock exchange OFS mechanism.

• Does not eliminate normal market risks.

Quick Comparison

Particular	Green Shoe Option
Applicable to	Public Issues (IPO and FPO)
Governing Law	SEBI ICDR Regulations, 2018
Main Purpose	Price stabilization after listing
Maximum Over-allotment	Generally up to 15% of the issue size
Managed by	Stabilising Agent (Book Running Lead Manager)
Available in Stock Exchange OFS?	No

Remember these key points:

• Green Shoe Option is available in a public issue, not merely an IPO.

• It can be used in both IPO and FPO.

• It is intended to stabilize the market price after listing.

• A Stabilising Agent manages the stabilization process.

• The over-allotment is generally limited to 15% of the issue size.

• It is governed by the SEBI ICDR Regulations, 2018.

• It is not available for the separate stock exchange OFS mechanism.

Conclusion

The Green Shoe Option is an important price stabilization mechanism in the Indian securities market. By permitting a limited over-allotment in public issues, it helps balance demand and supply, reduces excessive price fluctuations, and enhances investor confidence