Written by Subhasish Mandal
Published on June 05, 2026 | 7 min read
Key Takeaways:
Anchor Investors are a category of Qualified Institutional Buyers (QIBs) that invest in an IPO one day before it opens for public subscription.
An anchor investor is required to invest a minimum of ₹10 crores in a mainboard IPO.
The lock-in period for anchor investors is 30 days for 50% of the allotted shares, while the remaining 50% of the shares are subject to a lock-in period of 90 days.
Initial Public Offerings (IPOs) have become one of the most popular investment tools in India. Before an IPO opens for public subscription, a special category of institutional investors known as Anchor Investors participates in the issue.
Anchor investors' participation boosts the investors' confidence and creates positive sentiment around the IPO. This article discusses anchor investors, their eligibility criteria, role in IPO, lock-in period and the applicable SEBI guidelines.
Anchor investors are large institutional investors that invest in an IPO before it opens for public subscription. They are part of the Qualified Institutional Buyer (QIB) category and receive shares through a dedicated anchor investor allocation.
These investors include mutual funds, insurance companies, foreign portfolio investors (FPI), pension funds, sovereign wealth funds, and banks. Their early participation shows confidence in the company’s business model, valuation, and growth prospects.
Anchor Investors are allotted shares one working day before the IPO opens for subscription. Their investment acts as a signal to retail and institutional investors regarding the attractiveness of the issue.
Here are the key features of Anchor investors:
Anchor investors invest one day before the IPO opens, indicating institutional confidence and helping to create positive market sentiment.
Anchor investors belong to the Qualified Institutional Buyers segment and are subject to SEBI regulations and eligibility requirements.
Anchor investors are required to invest a minimum of ₹10 crores in the IPO, often depending on the issue size.
A specific portion of the QIB quota is reserved exclusively for anchor investors before public bidding begins.
Anchor investors must pay the entire investment amount at the time of application without any instalment facility.
Once a bid is submitted, anchor investors cannot revise or withdraw their application from the issue.
Shares allotted to anchor investors remain subject to an IPO lock-in period as prescribed by SEBI regulations.
Also Read: Types of Investors in IPO
To become eligible as an Anchor Investor for an IPO, SEBI has provided certain guidelines, which are as follows:
Only entities classified as QIBs under SEBI regulations can participate as anchor investors in an IPO.
Anchor investors must bid at least for ₹10 crore in a mainboard IPO and ₹1 crore in an SME IPO.
Mutual funds, banks, insurance companies, pension funds, and foreign portfolio investors commonly qualify as anchor investors.
Eligible institutions must comply with all SEBI rules governing IPO participation and securities market investments.
Investors should possess adequate financial resources to make large-scale investments in public offerings.
Anchor investors must submit their applications before the IPO opens for public subscription.
Anchor investors play an important role in the success of an IPO. Here are a few points to describe the importance of Anchor investors.
The participation of anchor investors boosts the confidence of retail investors and reassures them about the quality and valuation of the issue.
Early institutional demand creates positive momentum and improves subscription levels during the IPO period.
Anchor investors help establish fair pricing by evaluating company fundamentals before making investment decisions.
Strong anchor participation often generates favourable market sentiment and attracts broader investor interest.
Reputed institutions investing in an IPO strengthen trust in the company and its prospects.
Supporting Fundraising:
Their investments contribute significantly to successful capital raising efforts by issuing companies.
The Securities and Exchange Board of India (SEBI) introduced the anchor investor framework in 2009 to strengthen investor confidence in the IPO process. Since then, Anchor investors have become an important part of many IPOs, especially those of large and well-established companies.
According to SEBI regulations, Anchor Investors are classified under the Qualified Institutional Buyers (QIB) category. To participate, they are required to invest a minimum of ₹10 crore in the mainboard IPO and submit applications one day before the issue opens for public subscription.
There must be a minimum of 15 anchor investors if the issue size is less than ₹250 crores. However, if the offer size is more than ₹250 crores, the number of anchor investors can be increased to 25.
Lock-in period in an IPO refers to the timeframe during which anchor investors cannot sell their shares. In India, Anchor investors have a lock-in period from the date of IPO allotment.
As per SEBI regulations, Anchor investors can sell 50% of their shares after completing the 30-day lock-in period. The remaining 50% of their shares can be sold after completion of a 90-day lock-in period from the date of allotment.
This lock-in requirement ensures that institutional investors remain committed to their investment for a specific duration after share allotment.
Anchor investors play a crucial role in influencing IPO subscription levels. Since they invest before the issue opens to the public, their investment acts as an endorsement of the company's brand name. Retail investors often check the list of anchor investors before making investment decisions.
Strong anchor participation can increase confidence among retail, non-institutional, and institutional investors, resulting in higher subscription numbers across categories.
On the other hand, weak anchor participation may indicate limited institutional interest, which can affect market perception and investor sentiment. Therefore, anchor investor allocation is often considered an important indicator of an IPO’s potential success.
Here is how companies select anchor investors in India:
Investment bankers identify suitable institutional investors based on market reputation and investment capability.
Companies generally prioritise established mutual funds, insurance companies, and foreign institutional investors.
Investors with the ability to make large commitments are preferred for anchor allocation.
Companies often favour institutions known for maintaining investments rather than pursuing short-term gains.
Here is the difference between Anchor investors and qualified institutional buyers in a tabular format.
| Basis | Anchor Investors | QIB |
|---|---|---|
| Definition | Institutional investors participating before the IPO opening | Institutional investors participating in the IPO subscription |
| Category | Subset of QIB category | Broad institutional investor category |
| Application Timing | One day before the IPO opens | During the IPO subscription period |
| Share Allocation | Allocated before public bidding begins | Allocated after the IPO subscription process |
| Payment Requirement | Full payment is required up front | Payment as per applicable IPO rules |
| Bid Withdrawal | Cannot withdraw or modify the bid | Subject to applicable IPO bidding regulations |
| Lock-in Period | 30-day lock-in for 50% of shares, and 90 days for the remaining 50% | No specific lock-in requirement |
| Market Impact | Creates confidence before IPO launch | Contributes to overall institutional demand |
| Investment Purpose | Demonstrates early institutional commitment | Participates in the institutional allocation process |
| Eligibility | Selected QIBs invited by the issuer and book runners | All eligible QIBs |
Anchor Investors, a subset of the Qualified Institutional Buyers (QIB) category, play a crucial role in Initial Public Offerings (IPOs). Their participation helps improve investor confidence, strengthens IPO subscription levels, and enhances the credibility of the offering.
Anchor Investors are governed by SEBI regulations, including allocation rules and IPO lock-in period requirements. For retail investors, monitoring anchor investor participation can provide valuable insights into institutional sentiment and the overall attractiveness of an IPO.
About Author
A finance professional with strong expertise in stock market and personal finance writing, he excels at breaking down complex financial concepts into simple, actionable insights. Holding a Master’s degree in Commerce, he combines academic depth with practical knowledge of technical analysis and derivatives.
Read more from SubhasishUpstox is a leading Indian financial services company that offers online trading and investment services in stocks, commodities, currencies, mutual funds, and more. Founded in 2009 and headquartered in Mumbai, Upstox is backed by prominent investors including Ratan Tata, Tiger Global, and Kalaari Capital. It operates under RKSV Securities and is registered with SEBI, NSE, BSE, and other regulatory bodies, ensuring secure and compliant trading experiences.