The share price of Imperial Petroleum Inc. (NASDAQ:IMPP) surged by 22.73% between September 9 and September 16, 2025, putting it among the Energy Stocks that Gained the Most This Week. Imperial Petroleum (IMPP) Rallied This Week. Here is Why. Imperial Petroleum Inc. (NASDAQ:IMPP) is an international shipping transportation company specializing in the transportation of various petroleum and petrochemical products in liquefied form. Imperial Petroleum Inc. (NASDAQ:IMPP) continues to rally following the co ...