Tenneco (formerly Tenneco Automotive and originally Tennessee Gas Transmission Company) is an American automotive components original equipment manufacturer and an aftermarket ride control and emissions products manufacturer. It is a Fortune 500 company that has been publicly traded on the New York Stock Exchange since November 5, 1999 under the symbol TEN. Tenneco company headquarters are located in Lake Forest, Illinois, United States The company was acquired in November 2022 by Apollo Global Management. History Tenneco, Inc.'s origin was in the Chicago Corporation, established about 1930. Tennessee Gas and Transmission Company (completely separate) had been formed in 1940. Natural gas A shortage of fuel for World War II defense industries in the Appalachian area developed when industrial production was increased. The nuclear development operations of the Manhattan Project at Oak Ridge, Tennessee consumed huge quantities of Tennessee Valley Authority electrical power that would have otherwise been available to other industrial operations. The Chicago Corporation was able to acquire a Federal Power Commission (FPC) license to build a pipeline from Texas to Appalachia, eventually expanding to the largest natural gas pipeline network in the United States. These pipelines were acquired by El Paso Corporation in 1996, and are now owned by Kinder Morgan. Diversification In the 1950s, the company acquired existing oil companies, including Sterling Oil, Del-Key Petroleum, and Bay Petroleum. The Tennessee division of the Chicago Corporation acquired Tennessee Gas Transmission Company in 1943 to build a natural-gas pipeline from Texas to West Virginia. The first line was completed in October 1944. It was followed by three additional pipelines totaling during the next 15 years which provide gas to New York and New Jersey. In 1966, Tennessee Gas was incorporated as Tenneco, Inc. Tenneco expanded into a number of business ventures as a result of diversification. In 1967, the company acquired Walker, Inc., a manufacturer of universal-fit exhaust mufflers and pipes. The year after, they started working on the construction of a universal-fit catalytic converter, that would become a cost-effective alternative to the OE catalytic converters. It took the company 8 years to introduce one. Tenneco bought Houston Oil & Minerals Corporation in the late 1970s. Tenneco owned and operated a large number of gasoline service stations, but all were closed or replaced with other brands by the mid-1990s. In the 1970s, Tenneco purchased 53% of J.I. Case when they purchased its owner Kern County Land Company, the agricultural equipment