TTEK vs SF Comparison

Tetra Tech Inc provides consulting and engineering services for environmental, infrastructure, resource management, energy, and international development markets. It specializes in providing water-related services for public and private clients. It designs infrastructure, facilities, and other structures with complex plans and resource management. it has two reportable segments. Its Government Services Group (GSG) segment includes activities with U.S. government clients (federal, state and local) and activities with development agencies world-wide. Commercial/International Services Group (CIG) segment, which derives maximum revenue, includes activities with U.S. commercial clients and international clients other than development agencies.

Stifel Financial is a diversified financial-services provider that generates revenue from wealth management, investment banking, and lending. The firm was founded in 1890 as a Saint Louis-based full-service brokerage but has been transformed under CEO Ronald Kruszewski through a slew of acquisitions into a globally competitive wealth manager, investment bank, and retail and institutional brokerage. The firm generated $5.5 billion in revenue in 2025, with roughly two-thirds derived from wealth management and one-third derived from trading and investment banking.