Loews Corporation is one of the largest diversified holding companies in the United States, with five operating subsidiaries: CNA Financial Corporation, one of the largest U.S. commercial property-casualty insurers; Diamond Offshore Drilling, Inc., one of the world’s largest offshore drilling companies; HighMount Exploration & Production LLC, a domestic natural gas exploration and production company; Boardwalk Pipeline Partners, LP, an operator of interstate natural gas pipeline systems; and Loews Hotels, one of the country’s top luxury lodging companies.