These oil stocks are taking the worst beatings after Saudi Arabia shocks the energy market By: MarketWatch March 09, 2020 at 13:17 PM EDT Forty U.S. energy stocks were down at least 30% Monday. Read More >> Related Stocks: Apache Corp Apergy Corp Callon Petroleum Company Cimarex Energy Core Laboratories Inc Denbury Resources Devon Energy Diamondback Energy EOG Resources Green Plains Inc Halliburton Co Helix Energy Solutions Group Hess Corp Klx Energy Services Holdings Inc Laredo Petroleum Holdings Inc Marathon Oil Matador Resources Company Murphy Oil Nabors Industries Nasdaq Composite Newpark Resources Noble Corp Noble Energy Oasis Petroleum Inc Occidental Petroleum Oceaneering International Oil States International Oneok Inc Patterson-Uti Energy Pdc Energy Inc Penn VA Corp Pioneer Natural Resources Propetro Holding Corp QEP Resources SML Sm Energy Company Tetra Technologies Transocean Ltd U.S. Silica Holdings Inc Valaris Ltd Whiting Petroleum Corp Wpx Energy Inc