As of October 29, 2026, Tetra Tech had a market cap of $9.753 billion, which increased by 3.57% compared to the previous trading day. Market capitalization, often referred to as market cap, represents the total value of a company's outstanding shares on the stock market and is a common measure of its overall size and valuation.
Data updated: Oct 29, 2026, 4:00 PM ET
Tetra Tech Inc. (TTEK)
🌍 United States📈 NASDAQ🏭 Industrials🏢 Commercial Services & Supplies
Note: Each point on the chart represents the market capitalization at the end of the trading day. Source: Data compiled from
EDGAR filings,
Bloomberg
and Yahoo Finance.
📈 Tetra Tech Market Cap History by Year and Month
Tetra Tech Market Cap History by Year and Month
Year / Month
Market Cap
% Change
2026
$9.753B
▲ 11.49%
$9.753B
▲ 15.60%
$8.437B
▼ 8.82%
$9.253B
▲ 8.99%
$8.49B
▲ 13.23%
$7.498B
▲ 5.10%
$7.134B
▼ 14.95%
$8.388B
▲ 6.77%
$7.856B
▼ 15.95%
$9.347B
▼ 4.84%
$9.822B
▲ 12.28%
2025
$8.748B
▼ 18.07%
$8.748B
▼ 3.45%
$9.061B
▲ 7.83%
$8.403B
▼ 4.20%
$8.771B
▼ 8.35%
$9.57B
▼ 0.87%
$9.654B
▲ 1.88%
$9.476B
▲ 2.92%
$9.207B
▲ 12.02%
$8.219B
▲ 6.64%
$7.707B
▼ 1.50%
$7.824B
▼ 20.68%
$9.864B
▼ 7.62%
2024
$10.678B
▲ 20.13%
$10.678B
▼ 3.92%
$11.114B
▼ 15.07%
$13.086B
▲ 3.64%
$12.626B
▼ 0.79%
$12.727B
▲ 11.49%
$11.415B
▲ 4.35%
$10.939B
▼ 2.39%
$11.207B
▲ 7.58%
$10.417B
▲ 5.48%
$9.876B
▲ 4.17%
$9.481B
▲ 12.11%
$8.457B
▼ 4.86%
2023
$8.889B
▲ 15.56%
$8.889B
▲ 5.56%
$8.421B
▲ 4.79%
$8.036B
▼ 0.73%
$8.095B
▼ 3.38%
$8.378B
▼ 7.01%
$9.01B
▲ 3.37%
$8.716B
▲ 19.10%
$7.318B
▼ 0.64%
$7.365B
▼ 5.81%
$7.819B
▲ 7.32%
$7.286B
▼ 11.98%
$8.278B
▲ 7.62%
2022
$7.692B
▼ 15.93%
$7.692B
▼ 6.08%
$8.19B
▲ 9.42%
$7.485B
▲ 9.22%
$6.853B
▼ 5.36%
$7.241B
▼ 11.39%
$8.172B
▲ 11.47%
$7.331B
▲ 1.17%
$7.246B
▼ 3.09%
$7.477B
▼ 16.05%
$8.907B
▲ 3.88%
$8.574B
▲ 14.08%
$7.516B
▼ 17.86%
2021
$9.15B
▲ 45.84%
$9.15B
▼ 8.06%
$9.952B
▲ 4.96%
$9.482B
▲ 17.42%
$8.075B
▲ 3.82%
$7.778B
▲ 7.73%
$7.22B
▲ 9.41%
$6.599B
▲ 1.99%
$6.47B
▼ 6.39%
$6.912B
▼ 5.96%
$7.35B
▼ 2.05%
$7.504B
▲ 13.83%
$6.592B
▲ 5.07%
2020
$6.274B
▲ 33.06%
$6.274B
▼ 2.17%
$6.413B
▲ 18.12%
$5.429B
▲ 5.66%
$5.138B
▲ 3.30%
$4.974B
▲ 4.12%
$4.777B
▲ 12.03%
$4.264B
▲ 0.02%
$4.263B
▲ 4.82%
$4.067B
▲ 6.35%
$3.824B
▼ 13.52%
$4.422B
▼ 5.53%
$4.681B
▼ 0.72%
2019
$4.715B
▲ 64.63%
$4.715B
▼ 2.18%
$4.82B
▲ 0.98%
$4.773B
▲ 0.82%
$4.734B
▲ 6.79%
$4.433B
▲ 2.43%
$4.328B
▲ 0.42%
$4.31B
▲ 16.33%
$3.705B
▲ 4.34%
$3.551B
▲ 7.93%
$3.29B
▼ 0.72%
$3.314B
▲ 8.76%
$3.047B
▲ 6.39%
2018
$2.864B
▲ 6.43%
$2.864B
▼ 15.14%
$3.375B
▼ 7.66%
$3.655B
▼ 3.28%
$3.779B
▼ 2.15%
$3.862B
▲ 14.80%
$3.364B
▲ 3.38%
$3.254B
▲ 6.48%
$3.056B
▲ 13.52%
$2.692B
▼ 1.54%
$2.734B
— 0.00%
$2.734B
▼ 1.51%
$2.776B
▲ 3.16%
2017
$2.691B
▲ 9.04%
$2.691B
▼ 3.41%
$2.786B
▲ 1.24%
$2.752B
▲ 4.56%
$2.632B
▲ 9.26%
$2.409B
▼ 10.21%
$2.683B
▲ 2.60%
$2.615B
▼ 0.42%
$2.626B
▲ 4.46%
$2.514B
▲ 7.39%
$2.341B
▲ 1.47%
$2.307B
▼ 7.90%
$2.505B
▲ 1.50%
2016
$2.468B
▲ 60.99%
$2.468B
▲ 0.94%
$2.445B
▲ 11.49%
$2.193B
▲ 7.66%
$2.037B
▲ 0.49%
$2.027B
▲ 7.19%
$1.891B
▲ 6.90%
$1.769B
▼ 0.23%
$1.773B
▲ 4.11%
$1.703B
▼ 1.67%
$1.732B
▲ 7.31%
$1.614B
▲ 3.93%
$1.553B
▲ 1.30%
2015
$1.533B
▼ 7.65%
$1.533B
▼ 6.52%
$1.64B
▲ 2.69%
$1.597B
▲ 10.60%
$1.444B
▼ 7.67%
$1.564B
▼ 2.49%
$1.604B
▲ 3.95%
$1.543B
▼ 2.09%
$1.576B
▼ 3.55%
$1.634B
▲ 12.77%
$1.449B
▼ 7.59%
$1.568B
▲ 10.42%
$1.42B
▼ 14.46%
2014
$1.66B
▼ 8.34%
$1.66B
▼ 2.47%
$1.702B
▲ 1.43%
$1.678B
▲ 7.29%
$1.564B
▼ 4.52%
$1.638B
▲ 5.00%
$1.56B
▼ 11.86%
$1.77B
▲ 2.37%
$1.729B
▼ 7.14%
$1.862B
▼ 3.27%
$1.925B
▲ 2.61%
$1.876B
▼ 2.14%
$1.917B
▲ 5.85%
2013
$1.811B
▲ 6.28%
$1.811B
▼ 1.25%
$1.834B
▲ 9.43%
$1.676B
▲ 0.96%
$1.66B
▲ 13.00%
$1.469B
▼ 3.92%
$1.529B
▲ 0.20%
$1.526B
▼ 14.75%
$1.79B
▲ 4.86%
$1.707B
▼ 13.22%
$1.967B
▲ 5.64%
$1.862B
▲ 0.70%
$1.849B
▲ 8.51%
2012
$1.704B
▲ 25.94%
$1.704B
▲ 3.59%
$1.645B
▼ 0.60%
$1.655B
▼ 1.02%
$1.672B
▲ 1.27%
$1.651B
▲ 0.92%
$1.636B
▼ 1.09%
$1.654B
▲ 4.35%
$1.585B
▼ 6.43%
$1.694B
▲ 1.80%
$1.664B
▲ 7.29%
$1.551B
▲ 6.23%
$1.46B
▲ 7.91%
2011
$1.353B
▼ 12.71%
$1.353B
▼ 3.36%
$1.4B
▲ 2.79%
$1.362B
▲ 16.31%
$1.171B
▼ 5.87%
$1.244B
▼ 9.46%
$1.374B
▼ 2.07%
$1.403B
▼ 7.51%
$1.517B
▲ 3.06%
$1.472B
▼ 4.29%
$1.538B
▲ 5.05%
$1.464B
▲ 1.53%
$1.442B
▼ 6.97%
2010
$1.55B
▼ 7.13%
$1.55B
▲ 8.62%
$1.427B
▲ 9.68%
$1.301B
▲ 0.46%
$1.295B
▲ 15.52%
$1.121B
▼ 13.44%
$1.295B
▲ 6.94%
$1.211B
▼ 13.44%
$1.399B
▼ 7.04%
$1.505B
▲ 5.84%
$1.422B
▲ 10.23%
$1.29B
▼ 7.59%
$1.396B
▼ 16.36%
2009
$1.669B
▲ 15.42%
$1.669B
▲ 3.41%
$1.614B
▲ 2.41%
$1.576B
▼ 3.02%
$1.625B
▼ 9.17%
$1.789B
▼ 1.92%
$1.824B
▲ 5.31%
$1.732B
▲ 12.03%
$1.546B
▲ 4.53%
$1.479B
▲ 20.64%
$1.226B
▼ 9.05%
$1.348B
▼ 3.58%
$1.398B
▼ 3.32%
2008
$1.446B
▲ 14.94%
$1.446B
▲ 20.50%
$1.2B
▼ 8.88%
$1.317B
▼ 8.61%
$1.441B
▼ 15.19%
$1.699B
▼ 0.53%
$1.708B
▲ 27.08%
$1.344B
▼ 13.62%
$1.556B
▲ 25.18%
$1.243B
▲ 8.37%
$1.147B
▲ 3.43%
$1.109B
▼ 4.15%
$1.157B
▼ 8.03%
2007
$1.258B
▲ 20.50%
$1.258B
▲ 3.88%
$1.211B
▼ 11.15%
$1.363B
▲ 10.63%
$1.232B
▲ 7.69%
$1.144B
▼ 6.76%
$1.227B
▼ 2.00%
$1.252B
▼ 2.34%
$1.282B
▲ 5.95%
$1.21B
▲ 9.50%
$1.105B
▲ 6.97%
$1.033B
▼ 0.86%
$1.042B
▼ 0.19%
2006
$1.044B
▲ 16.65%
$1.044B
▲ 3.78%
$1.006B
▼ 4.10%
$1.049B
▲ 4.48%
$1.004B
▲ 4.91%
$0.957B
▲ 3.57%
$0.924B
▼ 9.59%
$1.022B
▲ 1.19%
$1.01B
▼ 9.34%
$1.114B
▲ 1.74%
$1.095B
▲ 7.46%
$1.019B
▲ 7.04%
$0.952B
▲ 6.37%
2005
$0.895B
▼ 5.29%
$0.895B
▲ 0.56%
$0.89B
▲ 1.02%
$0.881B
▼ 8.23%
$0.96B
▲ 6.79%
$0.899B
▲ 4.90%
$0.857B
▲ 11.15%
$0.771B
▲ 12.88%
$0.683B
▲ 13.83%
$0.6B
▼ 16.20%
$0.716B
▼ 23.59%
$0.937B
▲ 11.95%
$0.837B
▼ 11.43%
2004
$0.945B
▼ 30.21%
$0.945B
▲ 10.14%
$0.858B
▲ 15.95%
$0.74B
▲ 3.79%
$0.713B
▼ 28.63%
$0.999B
▲ 10.02%
$0.908B
▼ 0.98%
$0.917B
▼ 3.27%
$0.948B
▲ 3.95%
$0.912B
▼ 22.51%
$1.177B
▲ 1.12%
$1.164B
▼ 2.35%
$1.192B
▼ 11.96%
2003
$1.354B
▲ 107.99%
$1.354B
▼ 1.81%
$1.379B
▲ 13.69%
$1.213B
▲ 12.21%
$1.081B
▲ 4.95%
$1.03B
▲ 19.08%
$0.865B
▼ 6.59%
$0.926B
▲ 2.21%
$0.906B
▲ 9.69%
$0.826B
▲ 9.40%
$0.755B
▲ 7.55%
$0.702B
▲ 2.48%
$0.685B
▲ 5.22%
2002
$0.651B
▼ 37.58%
$0.651B
▼ 1.51%
$0.661B
▲ 39.75%
$0.473B
▲ 11.03%
$0.426B
▼ 11.98%
$0.484B
▲ 4.31%
$0.464B
▼ 40.36%
$0.778B
▲ 1.70%
$0.765B
▲ 1.59%
$0.753B
▲ 0.53%
$0.749B
▼ 20.57%
$0.943B
▲ 5.36%
$0.895B
▼ 14.19%
2001
$1.043B
▼ 18.07%
$1.043B
▼ 1.32%
$1.057B
▼ 2.31%
$1.082B
▲ 17.61%
$0.92B
▼ 7.82%
$0.998B
▲ 5.72%
$0.944B
▼ 14.65%
$1.106B
▼ 5.71%
$1.173B
▲ 18.37%
$0.991B
▲ 21.30%
$0.817B
▲ 16.88%
$0.699B
▼ 24.76%
$0.929B
▼ 27.02%
2000
$1.273B
▲ 115.40%
$1.273B
▼ 8.55%
$1.392B
▲ 0.58%
$1.384B
▲ 22.05%
$1.134B
▲ 5.29%
$1.077B
▲ 8.46%
$0.993B
▲ 9.60%
$0.906B
▲ 5.23%
$0.861B
▼ 5.49%
$0.911B
▼ 0.76%
$0.918B
▼ 4.87%
$0.965B
▲ 70.19%
$0.567B
▼ 4.06%
1999
$0.591B
▼ 23.84%
$0.591B
▲ 35.24%
$0.437B
▼ 28.36%
$0.61B
▼ 4.84%
$0.641B
▲ 4.74%
$0.612B
▲ 1.16%
$0.605B
▼ 3.82%
$0.629B
▼ 1.56%
$0.639B
▼ 12.10%
$0.727B
▲ 14.85%
$0.633B
▲ 15.72%
$0.547B
▼ 22.19%
$0.703B
▼ 9.41%
1998
$0.776B
▲ 74.38%
$0.776B
▲ 29.12%
$0.601B
▲ 3.26%
$0.582B
▼ 9.63%
$0.644B
▲ 36.44%
$0.472B
▼ 2.88%
$0.486B
▼ 11.48%
$0.549B
▲ 11.13%
$0.494B
▼ 9.19%
$0.544B
— 0.00%
$0.544B
▲ 9.68%
$0.496B
▲ 4.86%
$0.473B
▲ 6.29%
1997
$0.445B
▲ 58.36%
$0.445B
▲ 4.95%
$0.424B
▼ 2.08%
$0.433B
▲ 6.65%
$0.406B
▲ 7.41%
$0.378B
▼ 5.74%
$0.401B
▲ 2.30%
$0.392B
▲ 35.64%
$0.289B
▲ 40.29%
$0.206B
▼ 2.37%
$0.211B
▲ 9.90%
$0.192B
▼ 26.15%
$0.26B
▼ 7.47%
1996
$0.281B
▲ 16.60%
$0.281B
▲ 6.84%
$0.263B
▼ 16.24%
$0.314B
▼ 6.55%
$0.336B
▲ 23.08%
$0.273B
▲ 6.64%
$0.256B
▼ 9.22%
$0.282B
▼ 0.35%
$0.283B
▲ 15.51%
$0.245B
▼ 1.61%
$0.249B
▲ 8.73%
$0.229B
— 0.00%
$0.229B
▼ 4.98%
1995
$0.241B
▲ 61.74%
$0.241B
▼ 3.98%
$0.251B
▲ 9.13%
$0.23B
▼ 6.50%
$0.246B
▲ 12.33%
$0.219B
▼ 4.78%
$0.23B
▲ 22.34%
$0.188B
▼ 1.05%
$0.19B
▲ 10.47%
$0.172B
▲ 4.88%
$0.164B
▲ 2.50%
$0.16B
▲ 7.38%
$0.149B
— 0.00%
1994
$0.149B
▲ 13.74%
$0.149B
▼ 2.61%
$0.153B
▼ 4.38%
$0.16B
▼ 0.62%
$0.161B
▲ 3.21%
$0.156B
▲ 28.93%
$0.121B
▼ 2.42%
$0.124B
▼ 5.34%
$0.131B
▼ 3.68%
$0.136B
▲ 12.40%
$0.121B
▼ 0.82%
$0.122B
▼ 8.96%
$0.134B
▲ 2.29%
1993
$0.131B
▲ 75.03%
$0.131B
▲ 21.30%
$0.108B
▲ 0.93%
$0.107B
▲ 3.88%
$0.103B
▲ 34.45%
$76.61M
▼ 14.71%
$89.819M
▲ 6.25%
$84.536M
▼ 10.86%
$94.837M
▼ 2.70%
$97.471M
▲ 2.78%
$94.837M
▲ 0.31%
$94.541M
▲ 4.35%
$90.602M
▲ 21.05%
1992
$74.845M
▲ 20.43%
$74.845M
▼ 10.88%
$83.983M
▲ 11.11%
$75.585M
▲ 5.88%
$71.385M
▼ 2.60%
$73.292M
▲ 1.45%
$72.245M
▲ 15.00%
$62.822M
▼ 1.54%
$63.804M
▲ 1.67%
$62.758M
▲ 3.45%
$60.666M
▼ 15.11%
$71.467M
▲ 1.47%
$70.432M
▲ 13.33%
1991
$62.146M
— 0.00%
$62.146M
— 0.00%
All market cap values reflect closing prices for the period shown.
📊 Tetra Tech Market Cap and Other Industry Peers
Below are selected companies from the Industrials sector / subsector: