What is GMP in IPO?
If you have ever looked up an IPO before applying, you must have seen the term GMP. Everyone talks about it. For example: "GMP is ₹80", "GMP is negative" But what exactly is GMP? Is it reliable? And how do you actually use it? This guide explains everything in simple language.
What is GMP in IPO?
GMP stands for Grey Market Premium. It is the extra price that buyers are willing to pay for an IPO share before it officially lists on the stock exchange.
In simple words:
If an IPO's issue price is ₹100 and the GMP is ₹30, it means people in the grey market are buying and selling that IPO share at ₹130 - even before listing day.
This ₹30 extra is called the Grey Market Premium.
What is the Grey Market?
The grey market is an unofficial, informal market where IPO shares are bought and sold before they are listed on NSE or BSE.
It is not regulated by SEBI. There are no official exchanges. Trades happen through local dealers, phone calls, and personal trust.
Because it is unregulated, there is risk involved - but it has existed in India for decades and is widely tracked by IPO investors.
How is GMP Calculated?
GMP is not calculated by any formula. It is simply determined by demand and supply in the grey market.
If a lot of people want to buy an IPO share before listing, the GMP goes up. If there is less interest or the market is weak, the GMP falls or turns negative.
Example:
- Apsis Aerocom IPO had an issue price of ₹110
- It listed at ₹153 - a gain of 39%
- Investors who tracked its GMP before listing would have seen a strong positive GMP, signalling a good listing
You can track live GMP for all current IPOs on the GMP page.
How to Calculate Expected Listing Price Using GMP
Many new investors in India want to know one thing before applying for an IPO — will this stock list at a profit or a loss?
While there is no way to know the listing price with 100% certainty before the stock market opens, GMP gives you the closest real-world estimate available.
The formula is simple:
Expected Listing Price (Per Share) = Issue Price + GMP (Per Share)
Example 1 - Positive GMP
Let's say a company launches its IPO at an issue price of ₹200 and the current GMP is ₹50. This means grey market buyers are willing to pay ₹50 extra over the issue price right now.
Using the formula:
₹200 (Issue Price) + ₹50 (GMP) = ₹250 (Expected Listing Price)
This tells you the grey market expects this stock to list around ₹250 - a gain of 25% over the issue price.
Example 2 - Negative GMP
Now let's say the same IPO has a GMP of -₹30 a day before listing.
₹200 (Issue Price) + (-₹30) (GMP) = ₹170 (Expected Listing Price)
This is a warning sign. The grey market is signalling that the stock may list below its issue price — meaning investors who applied could face a loss on day one.
Example 3 - Zero GMP
If GMP is ₹0, the expected listing price equals the issue price - ₹200 in this case. The grey market sees neither strong demand nor weak sentiment. A flat listing near the issue price is expected.
What Does Positive and Negative GMP Mean?
| GMP | Expected Listing | What to Consider |
|---|---|---|
| High positive (₹40+) | Well above issue price | Strong listing likely, high demand |
| Low positive (₹10–₹30) | Slightly above issue price | Moderate listing, average demand |
| Zero | At issue price | Flat listing expected |
| Negative | Below issue price | Possible listing loss, weak demand |
A negative GMP is a warning sign. It means the grey market expects the stock to list at a loss. In such cases, many experienced investors choose not to apply or sell on listing day immediately.
Is GMP Always Accurate?
No - GMP is indicative, not guaranteed.
GMP can change daily based on:
- Overall stock market conditions
- Subscription numbers (how many times the IPO is subscribed)
- News about the company
- Broader market sentiment
GMP is most reliable in the last 1-2 days before listing when grey market activity peaks and price reflects actual demand more accurately.
Use GMP as one signal among many - not as the only reason to apply or skip an IPO.
GMP vs Kostak Rate - What is the Difference?
You may also see the term Kostak Rate alongside GMP.
- GMP = premium on the share price
- Kostak Rate = price at which an entire IPO application (lot) is sold in the grey market
For example, if the Kostak rate is ₹500, it means someone is willing to pay ₹500 to buy your entire IPO application - regardless of whether you get allotment or not.
Where to Track GMP in India?
You can track live, updated GMP for all ongoing and upcoming IPOs on IPO Rise:
The GMP page shows:
- Current GMP in ₹ and %
- Expected listing price
- GMP trend (rising, falling, stable)
- Last updated time
Key Takeaways
- GMP is the unofficial premium on IPO shares before listing
- It reflects grey market demand and gives a rough idea of listing price
- Positive GMP = likely good listing, Negative GMP = likely weak listing
- GMP is not guaranteed - always check subscription data and company fundamentals too
- Track live GMP on IPO Rise before making your apply/skip decision
Frequently Asked Questions
Q: Is Grey Market legal in India?
The grey market is not illegal but it is unregulated by SEBI. Trading in it carries personal risk as there are no official protections.
Q: Should I always apply if GMP is high?
Not necessarily. High GMP is a positive signal but you should also look at subscription numbers, company financials, and market conditions before applying.
Q: When does GMP become most reliable?
GMP becomes more accurate in the last 1–2 days before listing when grey market activity is highest.
Q: Can GMP be zero?
Yes. A zero GMP means the grey market expects the stock to list at or very close to the issue price - no significant gain or loss.
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