ROCK vs STLD

Gibraltar Industries Inc.

Gibraltar Industries, Inc. manufactures and distributes building products for the renewable energy, conservation, residential, and infrastructure markets in North America and Asia. It operates through three segments: Renewable Energy and Conservation, Residential Products, and Infrastructure Products. The Renewable Energy and Conservation segment designs, engineers, manufactures, and installs solar racking and electrical balance of systems, greenhouses, and botanical extraction systems. The Residential Products segment offers roof and foundation ventilation products and accessories, such as solar powered units; mail and electronic package solutions, including single mailboxes, cluster style mail and parcel boxes for single and multi-family housing, and electronic package locker systems; roof edgings and flashings; soffits and trims; drywall corner beads; metal roofing products and accessories; rain dispersion products comprising gutters and accessories; and exterior retractable awnings. This segment also provides electronic parcel lockers, rooftop safety kits, chimney caps, heat trace coils and exterior products, remote-controlled deck awnings for sun protection, and solar-powered ventilation products. The Infrastructure Products segment offers expansion joints, structural bearings, rubber pre-formed seals and other sealants, elastomeric concrete, and bridge cable protection systems. It serves solar developers, growers of food and plants, home improvement retailers, wholesalers, distributors, and contractors. Gibraltar Industries, Inc. was founded in 1972 and is headquartered in Buffalo, New York.

Steel Dynamics Inc.

Steel Dynamics, Inc., together with its subsidiaries, operates as a steel producer and metal recycler in the United States. It operates through three segments: Steel Operations, Metals Recycling Operations, and Steel Fabrication Operations. The Steel Operations segment offers hot and cold roll, and coated steel products; structural flange beams and channel sections, flat bars, large unequal leg angles, reinforcing bars, as well as standard strength carbon, intermediate alloy hardness, and premium grade rail products; engineered special-bar-quality products; and merchant-bar-quality products, including channels, angles, flats, merchant rounds, and reinforcing steel bars; and other engineered round steel bars. This segment is also involved in the turning, polishing, straightening, chamfering, threading, precision saw-cutting, and heat treating of bar products; and cutting to length, straightening, hole punching, shot blasting, welding, galvanizing, and coating of specialty merchant bar products. Its products are used in construction, automotive, manufacturing, transportation, heavy and agriculture equipment, and pipe and tube industry sectors. This segment sells its products directly to end-users, steel fabricators, and service centers. The Metals Recycling Operations segment engages in the purchase, process, and resale of ferrous and nonferrous scrap metals into reusable forms and grades. Its ferrous products include heavy melting steel, busheling, bundled scrap, shredded scrap, steel turnings, and cast-iron products; and nonferrous products comprise aluminum, brass, copper, stainless steel, and other nonferrous metals. This segment also provides transportation logistics, marketing, brokerage, and scrap management services. The Steel Fabrication Operations segment produces steel building components, such as steel joists, girders, trusses, and steel deck products for non-residential steel fabricators. The company also exports its products. Steel Dynamics, Inc. was incorporated in 1993 and is headquartered in Fort Wayne, Indiana.