Anchor investor in Indian IPOs

An anchor investor in an Indian Initial Public Offering (IPO) is a qualified institutional buyer (QIB) that applies for shares in the IPO on the working day before the public subscription window opens, at a specific price called the anchor allocation price, and receives an allotment of shares before the general public has had an opportunity to bid. The anchor investor mechanism was introduced by SEBI through Schedule XIII of the SEBI (ICDR) Regulations, 2018 (originally notified under the 2009 ICDR and carried forward into the 2018 version) to provide a visible institutional endorsement of an IPO before the retail and NII subscription period opens, thereby reducing informational uncertainty for retail investors and potentially stabilising the listing-day price.

Anchor investors are a sub-category within the QIB allocation. Up to 60% of the QIB tranche may be reserved for anchor investors, and each anchor investor must apply for a minimum of Rs 10 crore (Rs 2 crore for SME IPOs ). The allotment of shares to anchors at the anchor allocation price is disclosed publicly in the RHP supplement published on the morning of the first day of the public subscription period, making anchor names, quantities, and prices visible to all other investors before they bid.

Regulatory framework

SEBI (ICDR) Regulations, 2018, Schedule XIII

Schedule XIII of the ICDR specifies:

1. The anchor allocation is capped at 60% of the QIB portion of the net offer. The remaining 40% of the QIB portion (after anchor allocation) is available to non-anchor QIBs through the regular book-building window.
2. Each anchor investor must apply for a minimum aggregate value of Rs 10 crore (Rs 2 crore for SME platform issues).
3. For an anchor allocation of up to Rs 250 crore, a minimum of two and a maximum of 15 anchor investors are permitted, each allotted at least Rs 5 crore; above Rs 250 crore, a minimum of five and a maximum of 15 for the first Rs 250 crore, plus up to 15 more for every additional Rs 250 crore (Schedule XIII Part A para (10)(c), as substituted by the ICDR (Third Amendment) Regulations 2025 with effect from 1 December 2025; the earlier text allowed 10 more per additional Rs 250 crore).
4. Forty per cent of the anchor portion is reserved: 33.33 per cent for domestic mutual funds and 6.67 per cent for life insurance companies and pension funds, with any shortfall in the second part available to mutual funds (para (10)(d), in force 1 December 2025; before that, one-third was reserved for domestic mutual funds alone).
5. No person related to the BRLM (including its parent, subsidiary, or associate entity) may participate as an anchor investor in the same issue for which that BRLM is acting as a book runner.
6. Anchor investors must bid at a specific price within the price band; they cannot bid at the cut-off price .
7. The anchor allotment price is determined by the issuer and BRLM at the time of anchor allocation and must be disclosed in the RHP supplement.

Lock-in periods

The lock-in is the most legally significant obligation on anchor investors. SEBI ICDR Schedule XIII imposes:

• 50% of the anchor allocation (by value): a lock-in period of 30 days from the date of allotment.
• Remaining 50%: a lock-in period of 90 days from the date of allotment.

These lock-in periods are non-waivable; anchor investors cannot sell the shares allotted to them during the lock-in period even if the market price rises substantially above the anchor allocation price. The 90-day lock-in on half the anchor allocation replaced an earlier 30-day lock-in on all anchor shares through the SEBI (ICDR) (Amendment) Regulations 2022, for issues opening on or after 1 April 2022, to address concerns that anchors were acquiring shares at the issue price and selling them shortly after listing, effectively using the anchor mechanism as a mechanism for cheap share acquisition rather than a long-term institutional endorsement.

Process

Day before the public issue opens (Anchor Day)

On the working day before the first day of the retail and NII subscription window:

1. The issuer, in consultation with the BRLM, determines the anchor allocation price (which must be within the price band).
2. Selected QIBs submit their anchor allocation applications directly to the BRLM. The applications specify the number of shares applied for and confirm the price.
3. The BRLM and issuer decide which anchor investors receive allotments and in what quantities, subject to the cap of 60% of the QIB portion and the individual minimum of Rs 10 crore.
4. Allotment letters are issued to anchor investors.
5. The RHP supplement disclosing the names of all anchor investors, their individual allotments, and the anchor allocation price is published on the SEBI website, the exchange websites, and the BRLM’s website before 11:00 AM on the first day of the public subscription window.

During the public subscription window

Anchor investors do not participate in the regular book-building process. Their allotments are fixed at the anchor allocation price. If the final issue price (determined after the book-building window closes) is higher than the anchor allocation price, anchor investors benefit; if lower, anchor investors may pay more than the public. In practice, the anchor allocation price and the final issue price are usually the same for issues that are well-subscribed, because the BRLM sets the anchor price at the upper end of the band to minimise the risk of anchor investors paying more than the public.

Post-allotment

Anchor shares are credited to the anchor investor’s demat account on T+2 (the same day as the general public’s allotment), but are subject to the 30/90-day lock-in from that date. During the lock-in, the shares appear in the demat account but cannot be sold on the exchange or transferred. After the lock-in expires, anchor shares enter the free market with no further restriction.

Significance as a demand signal

The disclosure of anchor investor names and amounts before the public subscription window opens serves as a demand signal to retail investors. The reasoning is that:

• QIBs with sophisticated analysis capabilities, institutional resources, and access to the management roadshow have validated the issue at the anchor price.
• The lock-in creates a skin-in-the-game obligation; anchors cannot exit immediately if the listing-day price disappoints.
• The identity of the anchor investor matters: a domestic mutual fund, a foreign portfolio investor with a long-term mandate, or a sovereign wealth fund participating as an anchor investor is interpreted differently from a small domestic hedge fund or a family office.

Conflicts of interest

BRLM-related entities excluded

Schedule XIII explicitly prohibits BRLM-related entities from participating as anchor investors. This prevents the BRLM from using a related mutual fund or subsidiary to generate artificial demand signals. SEBI has been vigilant about this restriction; enforcement actions against BRLMs for allowing related entities to participate in anchor allocations have been taken in several cases.

SME IPO manipulation concerns

In an SME IPO , an anchor investor is a QIB applying for at least Rs 2 crore (ICDR Regulation 2(1)(c)), and Schedule XIII caps the number of anchors: at most two for an anchor allocation up to Rs 2 crore, and two to 15, with at least Rs 1 crore each, for allocations above Rs 2 crore up to Rs 25 crore. SEBI’s review of the SME segment (consultation paper of 19 November 2024) focused on diversion of issue proceeds and inflated revenue rather than on anchors, and its 2025 SME amendments did not change the anchor rules.

Comparison with anchor mechanisms in other markets

The Indian anchor investor mechanism is broadly analogous to anchor order or cornerstone investor structures used in IPOs in other markets:

• Hong Kong Stock Exchange requires cornerstone investors to commit for a 6-month lock-in and discloses their names and commitments in the listing prospectus.
• Singapore Exchange operates a similar cornerstone investor framework.
• US NASDAQ/NYSE does not have an equivalent formal anchor mechanism; institutional bookbuilding orders are submitted during the roadshow and are not publicly disclosed before the listing.

The Indian framework’s public disclosure of anchor names before the subscription window is more transparent than most comparable international mechanisms.

Anchor investors in the context of FPOs and REITs

The anchor investor mechanism was originally introduced for IPOs but has been extended to follow-on public offers (FPOs) and to REIT and InvIT IPOs. The mechanics are identical: anchors bid at a fixed price one day before the public window opens, receive allotment at that price, and are subject to the 30/90-day lock-in. For REIT and InvIT offerings, which tend to attract a different institutional investor base (infrastructure-focused funds, pension funds, insurance companies), the anchor allocation is particularly significant because the investor base for these instruments is more concentrated and institutional than for equity IPOs.

How anchor investors choose which IPOs to anchor

For a mutual fund, insurance company, or foreign portfolio investor that is deciding whether to participate as an anchor investor in an IPO, the evaluation process is similar to any large equity investment decision:

Management quality and governance. Institutional investors who participate in anchors are committing large amounts (minimum Rs 10 crore) to a company with a 30-90 day lock-in; they cannot exit quickly if the situation changes. This leads to particularly thorough management due diligence, including multiple interactions with the management team during the roadshow.

Valuation relative to peers. The BRLM provides the institutional investor with the price band and the implied valuation multiples (P/E, EV/EBITDA) at both the floor and the cap. The institutional investor benchmarks these against the traded multiples of listed peers and decides whether the IPO offers a sufficient margin of safety at the anchor price (which is typically at the cap).

Lock-in period risk. A 90-day lock-in on half the anchor allocation means the institutional investor cannot respond to negative developments (such as a poor quarterly result, a regulatory action, or a market downturn) for 90 days. This lock-in risk is a significant factor in the anchor investor’s decision. Large institutional investors with long-term mandates (sovereign wealth funds, insurance companies) are more comfortable with the lock-in than hedge funds or tactical traders.

Portfolio concentration. No single institutional investor participating as an anchor in a large IPO would normally receive more than 5%-10% of the anchor allocation (even though no SEBI rule explicitly caps the per-anchor share in most cases, concentration limits are imposed by the institutional investor’s own investment policy). For a Rs 500 crore anchor allocation, a fund house might take Rs 50-100 crore across multiple schemes.

The disclosure of anchor names as a quality signal in practice

The public disclosure of anchor investor names on the morning of the first day of the retail subscription window is intended to function as a quality signal. In practice, investors have developed heuristics for interpreting anchor lists:

Domestic mutual fund anchors: domestic mutual funds are required to mark their investments to market daily and report performance publicly. A domestic mutual fund that anchors an IPO and receives a poor listing is visible to its own investors in the daily NAV. This accountability means that domestic mutual funds are generally expected to conduct genuine due diligence before anchoring. The presence of multiple large domestic mutual fund anchors (for example, HDFC Mutual Fund, SBI Mutual Fund, and Nippon India Mutual Fund collectively anchoring an issue) is widely treated as a stronger quality signal than a list of less well-known funds.

Foreign portfolio investor anchors: the presence of major long-only foreign institutional investors (such as GIC Singapore, Temasek, Tiger Global, or Fidelity) in an anchor list signals that the issue has passed international due diligence. For large Indian IPOs with international ambitions or global investor bases, FPI anchor participation is a key marker of quality.

Insurance company and pension fund anchors: long-term institutional anchors with liability-driven investment mandates (LIC, National Pension System-linked funds) signal that the issue is appropriate for conservative institutional portfolios, a somewhat different signal than a hedge fund anchor.

References

1. Securities and Exchange Board of India (Issue of Capital and Disclosure Requirements) Regulations, 2018, Schedule XIII, Anchor Investor Allocation.
2. SEBI (ICDR) Regulations 2018, Regulation 2(1)(c) and Schedule XIII Part A, anchor investors in SME issues.
3. SEBI (ICDR) (Third Amendment) Regulations 2025, in force 1 December 2025, anchor investor numbers and the 40 per cent reservation.
4. SEBI enforcement orders relating to BRLM-related entity anchor participation, available at sebi.gov.in/enforcement.

See also

• National Stock Exchange of India IPO
• Qualified institutional buyer , the broader QIB category of which anchors are a sub-set
• Book building , the price-discovery process within which anchor allocation occurs
• Initial Public Offering , the broader IPO process
• Mainboard IPO , the primary venue for anchor investors (minimum Rs 10 crore)
• SME IPO , anchor participation with Rs 2 crore minimum
• Red Herring Prospectus , the document that discloses anchor allocation details
• IPO price band , the range within which the anchor allocation price must fall
• Cut-off price , the retail option that anchor investors cannot use
• Book running lead manager , the intermediary managing the anchor allocation
• Basis of allotment , how anchor shares relate to the overall allotment file
• IPO listing day , the day on which anchor lock-in begins