What is IPO lock-in? SEBI ICDR lock-in rules
IPO lock-in is the SEBI rule that stops certain shareholders, mainly promoters and pre-IPO investors, from selling their shares for a set period after a company lists in India. The point of IPO lock-in is to keep insiders invested for a while after the offer, so they cannot cash out the moment trading begins. This guide sets out the current lock-in periods for promoters, anchor investors, and other pre-issue holders under the SEBI ICDR Regulations, 2018. It is not investment advice.
Definition
IPO lock-in
is a SEBI rule that stops certain shareholders, mainly promoters and pre-IPO investors, from selling their shares for a set period after a company lists. It is set out in the SEBI (ICDR) Regulations, 2018, and the period depends on the type of holder. Source: SEBI.
What are the current IPO lock-in periods?
The period depends on who holds the shares. SEBI shortened several of these periods in amendments in 2021 and 2022.
- Promoter minimum contribution (20% of post-issue capital): locked in for 18 months, extended to three years where the fresh issue is mainly for capital expenditure.
- Promoter holding above the minimum: locked in for six months.
- Anchor investors: 50% of allotted shares locked in for 30 days, the other 50% for 90 days.
- Other pre-issue capital (non-promoter holders): locked in for six months.
18 months
Lock-in on the promoter minimum contribution of 20% of post-issue capital, under SEBI ICDR after the 2021 amendment
Source: SEBI ICDR Regulations, 2018
Why does SEBI require a lock-in?
An IPO lets a company raise money from the public and lets early holders sell some stake. Without a lock-in, promoters and pre-IPO investors could sell everything on listing day, leaving new public shareholders holding a company its own insiders just exited. The lock-in forces insiders to stay invested for a defined window, aligning them with the company right after listing. The anchor investor lock-in works the same way for the large institutional buyers who commit a day before the issue opens.
How can you see lock-in details for an IPO?
The lock-in terms for a specific issue are set out in its offer document, the DRHP and later the red herring prospectus, filed with SEBI and the exchanges. After listing, the shareholding pattern filed each quarter shows promoter holding, and a large jump in freely tradable shares often lines up with a lock-in expiry. For the minimum float a listed company must maintain, see minimum public shareholding.
So IPO lock-in is how SEBI keeps insiders committed after a listing rather than letting them exit at once. Flock reads disclosure filings and keeps each one dated and linked to its source. What any of it means for your money is your call to make.
Frequently asked questions
What is IPO lock-in?
IPO lock-in is a SEBI rule that stops certain shareholders, mainly promoters and pre-IPO investors, from selling their shares for a set period after a company lists. It is set out in the SEBI ICDR Regulations, 2018. Source: SEBI.
How long is the promoter lock-in after an IPO?
The promoter minimum contribution, 20% of post-issue capital, is locked in for 18 months, extended to three years where the fresh issue is mainly for capital expenditure. Promoter holding above the minimum is locked in for six months. Source: SEBI ICDR Regulations, 2018.
What is the anchor investor lock-in?
For anchor investors, 50% of the allotted shares are locked in for 30 days from allotment and the remaining 50% for 90 days. The 90-day tranche was added by a 2022 SEBI amendment. Source: SEBI.
Why does SEBI require an IPO lock-in?
Lock-in keeps promoters and early investors invested for a period after listing, so they cannot exit immediately and leave new public shareholders exposed. It aligns insiders with the company after the IPO. Source: SEBI.
Flock tracks these filings, sourced, dated, and linked back to the original. See what smart-money entities disclosed, without the guesswork about what it means.
Disclosures shown are public regulatory filings. Data may be delayed or incomplete. Smart-money entities may no longer hold positions shown. Not investment advice.