Builders FirstSource is the largest U.S. supplier of building materials and services to professional homebuilders, operating roughly 585 locations across 43 states. The company serves production homebuilders, custom homebuilders, multifamily builders, and repair and remodeling contractors, supplying lumber, windows, doors, trusses, wall panels, millwork, and more, delivered directly to job sites. Builders FirstSource organizes its products into four categories: manufactured products (factory-built trusses, wall panels, engineered wood, and the Ready-Frame pre-cut framing system); windows, doors, and millwork (including the proprietary Synboard PVC trim line); specialty building products and installation services; and commodity lumber and sheet goods. Value-added products collectively represent roughly half of net sales and carry meaningfully higher margins than commodity lumber. The install business, where Builders FirstSource provides turnkey framing and component installation, represents roughly 16-17% of net sales and deepens relationships with builders. Revenue is closely tied to U.S. housing starts, with a lag of a few months for single-family and 9-12 months for multifamily. Commodity lumber and OSB are largely pass-through products where Builders FirstSource earns a spread, and commodity price swings can compress overall margins. The company's core strategy is to grow the share of value-added manufactured products in its mix, expand installation services, and extend its digital platform (via its Paradigm subsidiary) for quoting, scheduling, and home design. Builders FirstSource has been an active acquirer, completing 40+ deals since its 2021 merger with BMC, and has returned capital aggressively through share repurchases, buying back roughly 46.5% of shares outstanding since August 2021.