An IPO's Grey Market Premium (GMP) is an unofficial measure of how the market views the issue prior to its formal listing. It shows the unofficial price at which IPO shares are exchanged on the black market, which is typically higher than the issuance price. While a low or negative GMP may signal muted or poor sentiment, a positive GMP indicates that investors anticipate the company will list at a premium.
Just as a weak GMP does not always indicate bad fundamentals, a good GMP does not guarantee long-term performance following listing. Investors should assess the company's financials, valuation, growth potential, and industry forecast before submitting an application for an initial public offering (IPO). They should also match the decision with their risk tolerance and investment horizon.