STLD vs DGX Comparison

Steel Dynamics Inc operates as a domestic steel producer and metal recycler in the United States. The company's product portfolio comprises hot rolled sheet, hot rolled plate, painted sheet products, cold rolled sheet, and others. Its reportable segments are steel operations, metals recycling operations, steel fabrication operations, and aluminum operations. Maximum revenue is generated from its steel operations segment, which consists of manufacturing various steel products and numerous coating operations. Its primary sources of revenue are currently from the manufacture and sale of steel products, the processing and sale of recycled ferrous and nonferrous metals, and the fabrication and sale of steel joists and deck products.

Quest Diagnostics is a leading independent provider of diagnostic testing, information, and services in the US. The company generates over 95% of its revenue through clinical testing, anatomic pathology, esoteric testing, and substance abuse testing with specimens collected at its national network of roughly 2,300 patient service centers, as well as multiple doctors offices and hospitals. The firm also runs a much smaller diagnostic solutions segment that provides clinical trials testing, risk-assessment services, and information technology solutions.