Grey market premium (GMP) is the extra price at which IPO shares informally change hands before they list, if an issue priced at ₹200 has a GMP of ₹40, unofficial buyers are paying ₹240. The short answer to "should I rely on it?": no. The grey market is unofficial, unregulated, and has no obligation to be right.
What exactly is the grey market?
It is an informal, word-of-mouth market that springs up around popular IPOs, where dealers match people willing to buy or sell allotments (or even applications) before listing. None of it happens on an exchange. There is no contract note, no settlement guarantee, no regulator watching, and no legal recourse if the other side walks away. The market regulator, the Securities and Exchange Board of India (SEBI), does not recognise or supervise these trades. Rupeezy does not deal in the grey market, quote GMP, or facilitate any grey-market transaction.
Why do people quote GMP at all?
Because it feels like a preview. If the grey market pays ₹240 for a ₹200 share, the crowd reads it as "listing pop of 20% expected." Financial sites and social media groups publish GMP numbers daily during a hot IPO, and the number becomes part of the excitement. Ramesh sees a rising GMP on Sunday evening and decides to apply for one more lot on Monday. That is GMP doing exactly what it does best: driving applications, not predicting prices.
Why is GMP unreliable?
It is thin and easily pushed around. The grey market is a handful of dealers and a small pool of trades. A few motivated participants (including people who benefit from a hyped subscription) can move the quoted premium with very little money. Compare that with the exchange's own special pre-open session on listing day, where actual, regulated order flow discovers the price.
It measures mood, not value. GMP tracks the temperature of IPO enthusiasm on that day. Sentiment can reverse between the last GMP quote and the listing morning, a weak market open, a global sell-off, or simply the hype cooling.
It has a documented habit of being wrong. Stocks with fat premiums have listed flat or below issue price; stocks with negligible GMP have listed strongly. There is no enforcement mechanism making a grey-market quote come true.
You cannot verify it. There is no official tape. The GMP you read on a website is whatever someone reported. Two sites routinely quote different numbers for the same IPO on the same day.
So what should I look at instead?
The things GMP distracts you from: the company's business and financials in the RHP, the valuation the price band implies, the fresh-issue versus OFS mix, and your own reason for applying. A rational application survives a bad listing day; an application made because "GMP was ₹90" does not. The fuller picture of what can go wrong is in what are the risks of investing in an IPO?
Things to keep in mind
- GMP is an unofficial, unregulated number with no settlement guarantee and no accountability. Treat it as gossip, not data.
- Grey-market deals offer no legal protection; if a counterparty defaults, there is nowhere to complain.
- Rupeezy does not participate in, facilitate, or endorse grey-market trading in any form.
- Decide on an IPO using the offer document and the valuation. Never on a premium quoted by an unverifiable market.
Read next
How is an SME IPO different from a mainboard IPO? — A separate segment, with different lot sizes, rules and risks.