Continental Resources (OKLA) 

Continental Resources, Inc. explores for, develops, and produces crude oil and natural gas properties primarily in the north, south, and east regions of the United States. The company sells its crude oil and natural gas production to energy marketing companies, crude oil refining companies, and natural gas gathering and processing companies. As of December 31, 2019, its proved reserves were 1,619 million barrels of crude oil equivalent (MMBoe) with estimated proved developed reserves of 707 MMBoe. Continental Resources, Inc. was founded in 1967 and is based in Oklahoma City, Oklahoma.