|Concho Resources, Inc.
||Concho Resources Inc., an independent oil and natural gas company, acquires, develops, and explores for oil and natural gas properties in the U.S.
|Continental Resources, Inc.
||Continental Resources, Inc. is an independent crude oil and natural gas exploration and production company with operations in the North, South and East regions of the United States.
|WPX Energy, Inc.
||WPX Energy Inc. operates as an independent natural gas and oil exploration and production company. The Company focuses on its natural gas reserve base and related NGLs in the Piceance Basin of the Rocky Mountain region, the Bakken Shale oil play in North Dakota, and the Marcellus Shale natural gas play in Pennsylvania.
|EOG Resources, Inc.
||EOG Resources, Inc., explores, develops, produces and markets natural gas and crude oil primarily in producing basins in the United States, Canada, The Republic of Trinidad and Tobago, the United Kingdom, and The People's Republic of China.
|Pioneer Natural Resources Co.
||Pioneer Natural Resources Company (Pioneer) is an independent oil and gas exploration and production company with operations in the United States and South Africa.
|Parsley Energy, Inc., Class A
||Parsley Energy is an independent oil and natural gas company with operations in the Permian Basin that develops unconventional oil and natural gas reserves.
|Whiting Petroleum Corp.
||Halliburton Company provides various products and services to the energy industry for the exploration, development, and production of oil and gas properties worldwide.
||Schlumberger Limited operates as an oilfield services company in the United States and internationally.
|Oasis Petroleum LLC
Total Portfolio Holdings
(as of 6/30/2018)
updated quarterly, upon availability