Tetra Tech, Inc. (TTEK:NASDAQ) closed at $36.98 on October 23, 2026, up 0.46% on the day. The stock trades 14.3% below its 52-week high of $43.14 and 43.3% above its 52-week low of $25.81. Over the past year, it gained 9.5%. Tetra Tech, Inc. is part of the Consumer Services sector (Military/Government/Technical).
In 252 trading sessions since October 23, 2025, TTEK closed higher on 122 days (48%). Its best day was November 13, 2025 (+15.29%) and its worst was February 12, 2026 (-11.78%). The stock moved 10% or more in a single session 2 times. It opened at least 5% above the previous day's high 3 times.
Tetra Tech, Inc. provides consulting and engineering services worldwide. It operates through two segments: Water, Environment and Infrastructure (WEI); and Resource Management and Energy (RME). The WEI segment offers early data collection and monitoring, data analysis and information technology, science and engineering applied research, engineering design, construction management, and operations and maintenance services; and climate change and energy management consulting, as well as greenhouse gas inventory assessment, certification, reduction, and management services. It serves governments, and commercial and industrial clients in water resources analysis and water management, environmental restoration, government consulting, and civil infrastructure master planning and engineering design markets. The RME segment provides early data collection and monitoring, data analysis and information technology, feasibility studies and assessments, science and engineering applied research, engineering design, construction management, and operations and maintenance services. This segment serves industrial and commercial clients, U.S. federal agencies in large scale remediation, and internatio...
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