IPOpulse

What are IPO Anchor Investors and Why Do They Matter?

Learn who anchor investors are in an IPO, how they are allotted shares before the public issue, and what the 30-day and 90-day lock-in means for retail investors.

4 min read20 February 2026

Who are Anchor Investors?

Anchor investors are large institutional investors β€” mutual funds, insurance companies, FPIs (Foreign Portfolio Investors) β€” that SEBI allows to bid for IPO shares one day before the public issue opens. This is called the anchor allotment.

SEBI introduced anchor investors in 2009 to build confidence in IPOs. When reputable institutions like HDFC MF, SBI MF, or foreign funds like Goldman Sachs back an IPO, it signals credibility to retail investors.

Anchor Allocation Rules

  • Anchors can be allotted up to 60% of the QIB portion of any IPO
  • Minimum application: β‚Ή10 crore per anchor investor
  • Minimum 2 anchor investors; maximum 15 for allotment up to β‚Ή250 Cr
  • Anchors are allotted at the upper end of the price band

The Lock-in Period

Anchor shares are locked β€” they cannot be sold immediately. SEBI rules (updated 2021):

  • 50% of anchor allocation: Locked for 90 days from listing
  • 50% of anchor allocation: Locked for 30 days from listing

This means on the 31st day after listing, 50% of anchor shares can hit the market. This often creates selling pressure around day 30 β€” watch for this when holding an IPO stock.

Quality of Anchors Matters

Not all anchor participation is equal. Key questions:

  • Are domestic MFs (SBI, HDFC, Nippon) participating? They're long-term holders.
  • Are FPIs present? Foreign institutional money signals global interest.
  • Are obscure funds anchoring? Some promoter-friendly funds participate without intent to hold.

Check anchor allotment letters on BSE/NSE on the day before an IPO opens. IPOpulse shows anchor investors on each IPO detail page.


Frequently Asked Questions

No. Anchors pay the issue price and are locked in. If the IPO lists down and stays below issue price, anchors also lose money on their allocation.

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