Comfort Systems USA, Inc. (FIX)

Comfort Systems USA's stock experienced notable activity including exceptional Q3 2025 results with significant revenue and profit growth, a record backlog indicating strong future revenue visibility, and varied analyst ratings ranging from downgrades to raised price targets. Leadership transitions and appointments were announced, and the company completed acquisitions of two electrical companies. The stock delivered a substantial return over the past year.

Comfort Systems USA experiences some seasonality in demand, with backlog building in the fourth and first quarters and being utilized in the second and third quarters due to higher revenues during those periods. The company has noted less seasonality due to an increasing number of projects in warmer climates and strong demand from the technology and manufacturing sectors. Essential services like environmental control and operational efficiency contribute to a stable revenue base, often bolstered by recurring maintenance contracts.

Comfort Systems USA, Inc. specializes as a mechanical and electrical contractor, focusing on installation, renovation, maintenance, repair, and replacement of complex building systems in the industrial and commercial sectors. Its major products and services include HVAC systems, plumbing and piping, electrical systems, controls and building automation systems, off-site and modular construction, fire protection and monitoring, and building services. The company derives revenue from installation services in newly constructed facilities and renovation, expansion, maintenance, repair, and replacement services in existing buildings.

Comfort Systems USA has a significant national presence with 47 operating units and 178 locations across 136 cities in the United States, enabling it to address the needs of technically complex systems nationwide.

Comfort Systems USA maintains a strong brand reputation, evidenced by its consistent financial performance and industry recognition, including rankings on the Fortune 500 and Engineering News-Record lists. The company emphasizes safety and compliance through internal audits and risk assessments, and its commitment to environmental, social, and governance practices is highlighted in its Sustainability Report.

Comfort Systems USA, Inc. is predominantly owned by institutional investors, who hold approximately 96.51% of the company's stock. Corporate insiders hold 1.59%, and the public/retail float is at 1.90%. Major institutional owners include Vanguard Group Inc., BlackRock, Inc., and Fmr Llc, among others.