What is IPO GMP (Grey Market Premium)?

GMP — Grey Market Premium — is the price at which an IPO's shares are unofficially trading before they list. If an IPO is priced at ₹100 and the GMP is ₹30, the grey market is betting it will list around ₹130. It's the single most-watched — and most-misunderstood — IPO number.

What the "grey market" actually is

It's an informal, unregulated market run by a small network of dealers, mostly over the phone. There's no exchange, no SEBI oversight, and no official record. The "premium" is a quoted rumour, set by supply and demand among a handful of operators — not a guaranteed listing price.

Why people watch it

GMP is a rough proxy for hype: a high GMP means strong demand chatter, a low or negative GMP means weak interest. For a quick gut-check of sentiment, that's all it is.

Why you should be sceptical

• It's unofficial and easily manipulated. A few operators can move a GMP quote; it can be talked up to drum up applications.
• It changes by the hour and often collapses right before listing.
• It frequently gets listing day wrong. Plenty of high-GMP IPOs have listed flat or below issue price.
• It tells you nothing about the business — only about short-term mood.

How to use it (if at all)

Treat GMP the way you'd treat a betting line: mildly interesting, never a reason to invest. The things that actually matter — the company's finances, what the money is for, valuation versus peers, and the risks in the prospectus — are all in the RHP. If your entire case for an IPO is "the GMP is high," you don't have a case. Our IPO alerts focus on the real numbers, not the grey-market noise.