Liberty Oilfield Services
Liberty Oilfield Services Inc. (LOS) provides hydraulic fracturing, wireline pump-down, and proppant testing services with assets in the United States and Canada. Ordinary shares are listed on the NYSE (LBRT) exchange. The company was formed in 2011 with funding from Riverstone and several managers from Pinnacle Technologies which Halliburton acquired in 2008. The company acquired Sanjel's United States assets in 2016 and completed an initial public offering in 2018.