Vantage Energy Inc, a oil and gas company, has filed with U.S. regulators to raise $400 million in an IPO of common stock. The company listed Barclays, Goldman Sachs, and Citigroup as some of its underwriters for the IPO. Vantage Energy as chosen to be listed on the NYSE under the symbol, "VEI", the filing did now unveil how many shares the company plans to sell or their expected price at opening.