|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.
|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.
|Diamondback Energy, Inc.
||Diamondback Energy Inc. is an independent oil and natural gas company currently focused on the acquisition, development, exploration and exploitation of unconventional, onshore oil and natural gas reserves in the Permian Basin in West Texas.
||Phillips 66 is an independent downstream energy company that operates in refining & marketing, midstream and chemicals
||Halliburton Company provides various products and services to the energy industry for the exploration, development, and production of oil and gas properties worldwide.
|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.
|Marathon Petroleum Corp.
||Marathon Petroleum Corporation (MPC) is a petroleum product refiner, transporter and marketer in the United States. The Company operates in three segments: Refining & Marketing, Speedway and Pipeline Transportation.
||Schlumberger Limited operates as an oilfield services company in the United States and internationally.
Total Portfolio Holdings
(as of 12/31/2018)
updated quarterly, upon availability