IPO GMP Calculator — Estimate Your Listing Gains
Use this free IPO GMP Calculator to estimate the expected listing price, potential profit per lot, and listing gain percentage for any IPO based on its current Grey Market Premium (GMP).
How to Use the IPO GMP Calculator
- Enter the IPO Issue Price — The upper end of the price band at which you apply for the IPO.
- Enter the Current GMP — The Grey Market Premium value. Use negative number if GMP is negative.
- Enter the Lot Size — Number of shares in one lot (varies per IPO).
- Enter Number of Lots — How many lots you applied for (default is 1).
What is IPO GMP and How Does It Affect Listing Price?
IPO GMP (Grey Market Premium) is an unofficial indicator of the expected listing price. The formula: Expected Listing Price = Issue Price + GMP. For example, issue price ₹200 + GMP ₹35 = expected listing at ₹235 (17.5% gain).
IPO GMP Calculation Formula
- Expected Listing Price = Issue Price + GMP
- Listing Gain % = (GMP ÷ Issue Price) × 100
- Profit Per Lot = GMP × Lot Size
- Total Profit = GMP × Lot Size × Number of Lots
Important Points About IPO GMP
- GMP is unofficial and unregulated — not endorsed by SEBI.
- GMP values change daily based on demand and sentiment.
- A high GMP does not guarantee a profitable listing.
- Always combine GMP with company fundamentals before investing.
- Consult a SEBI-registered financial advisor before making investment decisions.
Frequently Asked Questions
What does positive GMP mean?
A positive GMP indicates the IPO is expected to list above its issue price, generating profit for allotted investors.
What does negative GMP mean?
A negative GMP indicates weak demand, suggesting the IPO may list below issue price.
Is GMP always accurate?
Not always. GMP often directionally predicts listing performance but actual results can differ based on market conditions on listing day.