Anchor Investors in an Indian IPO: What Promoters Should Know Before the Book Opens
- Dhruv Seth

- Jul 22
- 3 min read
Most first-time issuers fixate on the retail buzz around their IPO. But the tone for the entire issue is often set a day earlier, when anchor investors commit. A weak anchor book can dampen sentiment before the public has even bid; a strong one signals institutional conviction. For promoters in the Rs 100 to Rs 1,000 crore band, understanding how the anchor portion works is not optional.
What anchor investors actually do
Anchor investors are qualified institutional buyers - mutual funds, insurers, sovereign and pension funds, and foreign portfolio investors - who are allotted shares one working day before the issue opens to the public. They bring two things: capital and credibility. Their participation is disclosed, so the names in your anchor book become a signal to every other investor about the quality of the offering.
Because anchors commit early, without certainty about final demand, their willingness to invest is read as a vote of confidence in both the business and the price band.
The rules that govern the anchor book
The anchor allocation is carved out of the QIB portion, and SEBI's ICDR Regulations set the boundaries:
Up to 60 per cent of the QIB portion may be allotted to anchor investors.
For a mainboard issue, each anchor investor must apply for at least Rs 10 crore.
A defined share of the anchor book is reserved for domestic mutual funds - a proportion SEBI revised in late 2025, so confirm the current split before planning the book.
Anchors bid on a single day, one working day before the issue opens.
The SME platforms, BSE SME and NSE Emerge, permit anchor investors too, at a lower minimum application - a route larger SME issuers increasingly use to anchor demand.
Lock-in: what it signals
Anchor shares are not freely tradable after listing. Half the shares allotted to an anchor are locked in for 90 days from the date of allotment; the remaining half for 30 days. This staggered lock-in, introduced to curb quick exits, means anchors are underwriting a view on the business well beyond listing day - and that discipline is part of why their participation carries weight.
For a promoter, the implication is simple: anchors scrutinise exactly what a lock-in forces them to live with - governance, earnings quality, and the credibility of the growth story.
Preparing for the anchor conversation
Anchor demand is built in the days before the issue, largely on the strength of the DRHP, the price band, and management's answers in one-on-one meetings. What moves institutions:
Restated financials that hold up to questioning, with clean related-party disclosures.
A price band supported by comparable multiples, not aspiration.
A clear, defensible use of the funds being raised.
Management that can speak to risks candidly rather than deflect them.
The merchant banker runs the process, but the promoter and CFO carry the room. Weak or evasive answers in anchor meetings translate quickly into a thin book.
How Seth & Associates helps
Seth & Associates, Chartered Accountants, advises companies in the Rs 100 to Rs 1,000 crore band preparing for both mainboard and SME listings. We help management bring the financials, disclosures and equity story to a standard that stands up to institutional scrutiny - well before the anchor book is built.
This article is for general information and does not constitute investment, legal or tax advice. Regulations change; please verify the current position or speak to a qualified adviser before acting.
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