Eagle Materials Inc. (NYSE: EXP) is a building materials company based in Dallas, Texas. The company was established in 1963. Until 2014, it owned 6 cement plants, 4 gypsum wallboard plants, 1 recycled paperboard plant, 9 concrete batching plants and 2 aggregates facilities. Eagle Materials Inc. once was part of Centex Corporation. In 2013 Eagle replaced Regeneron in the S&P MidCap 400.