What Is IPO GMP?
Learn what grey market premium means, why it changes, and why unofficial GMP should never be the sole basis for an IPO decision.
IPO grey market premium, commonly called GMP, is an unofficial indication of the price at which market participants may be willing to trade an IPO application or expected share before listing. It does not come from a recognized stock exchange.
Why does GMP move?
- Changes in subscription demand.
- Movements in the broader stock market.
- New information or sentiment about the company and sector.
- Limited liquidity and changing activity in the unofficial market.
Important limitations
GMP is not a regulated price-discovery mechanism, can vary across sources, and may change sharply. It does not guarantee the eventual listing price and says little about the company’s long-term business quality.
A better decision framework
- Understand the business and industry.
- Review financial performance and cash generation.
- Compare valuation with relevant listed companies.
- Study promoter history and material risks.
- Treat unofficial sentiment only as secondary context.
“Short-term sentiment can be visible; long-term value still depends on the business.”
Sources
Frequently asked questions
Is IPO GMP an official exchange price?
No. GMP is an unofficial grey-market indication and is not a price published or supervised by a recognized stock exchange.