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Tetra Tech, Inc. (TTEK) is a manufacturing and production company in the public works planning services industry, based in Pasadena, United States, with about 25,000 full-time employees.
It reported revenue of $5.44 billion for fiscal year 2025, up 4.7% from fiscal year 2024, and net income of $247.72 million. In Q3 2026 (the quarter ended June 30, 2026) revenue was $1.31 billion, down 4.5% from a year before. Its largest business segment, Commercial/International Services Group Incl. HPB Division, brought in 54% of segment revenue in fiscal year 2025; United States was the largest region with 63%. Its market capitalization was $8.54 billion as of October 9, 2026.
Figures from company filings and market data; latest fiscal year ended September 30, 2025; market data as of October 9, 2026.
Tetra Tech, Inc. provides consulting and engineering services focusing on water, environment, and sustainable infrastructure in the United States and internationally. The company operates through two segments, Government Services Group (GSG) and Commercial/International Services Group (CIG).
Tetra Tech reported $5.44 billion in revenue for fiscal year 2025, up 4.7% from $5.20 billion in fiscal year 2024. In Q3 2026 revenue was $1.31 billion.
Commercial/International Services Group Incl. HPB Division, with $2.49 billion or 54% of segment revenue in fiscal year 2025. Next: Government Services Group Inc. HPB Division (46%).
United States: 63% of revenue by region in fiscal year 2025, followed by United Kingdom (14%).
$8.54 billion as of October 9, 2026.
Listed companies of a similar size in the same industry (public works planning services) include Aecom (ACM), Stantec Inc. (STN), Bowman Consulting Group Ltd. (BWMN), Falcon's Beyond Global, Inc. (FBYD).