Gartner is a public research and advisory firm that sells subscription research, consulting, and conferences to CIOs and business leaders at large enterprises and governments. Its offerings include market analysis (e.g., Magic Quadrant), peer benchmarks, expert advisory, and events. Founded in 1979 and headquartered in Stamford, Connecticut, Gartner trades on the NYSE (ticker: IT) and is a member of the S&P 500.