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Tetra Tech Inc (TTEK) stock

TTEKNasdaqServices-Engineering ServicesFiscal year ends September 27
Financials through Q3 FY2026, quarter ended Jun 28, 2026Last filing: 10-Q on Jul 31, 2026Score 15/305% below fair value
$38.83−0.60 (-1.52%)

Close on Nov 13, 2026Market cap $9.94BP/E 23.4Yield 0.63%

Tetra Tech gross margin

Gross margin is gross profit as a percentage of revenue.

Tetra Tech's gross margin for the twelve months ending Jun 28, 2026 was 18.8%. For fiscal 2025 it was 17.7%, against 16.7% the year before. The highest annual figure on record is 17.7% in fiscal 2025.

Annual gross margin

PeriodPeriod endValueChange (pts)
FY2025Sep 28, 202517.7%+1.0
FY2024Sep 29, 202416.7%+0.6
FY2023Oct 1, 202316.0%−0.4
FY2022Oct 2, 202216.4%+0.9
FY2021Oct 3, 202115.5%+0.6
FY2020Sep 27, 202014.9%+1.8
FY2019Sep 29, 201913.1%+0.2
FY2018Sep 30, 201813.0%+0.1
FY2017Oct 1, 201712.8%+0.1
FY2016Oct 2, 201612.8%−1.0
FY2015Sep 27, 201513.7%+2.4
FY2014Sep 28, 201411.4%–

Quarterly gross margin

Change is against the same quarter a year earlier.

Periods
PeriodPeriod endValueChange (pts)
Q3 FY2026CQ2 2026Jun 28, 202618.6%+0.2
Q2 FY2026CQ1 2026Mar 29, 202617.5%+1.3
Q1 FY2026CQ4 2025Dec 28, 202518.2%+2.6
Q4 FY2025CQ3 2025Sep 28, 202520.6%+2.8
Q3 FY2025CQ2 2025Jun 29, 202518.4%+1.8
Q2 FY2025CQ1 2025Mar 30, 202516.2%−0.4
Q1 FY2025CQ4 2024Dec 29, 202415.6%+0.1
Q4 FY2024CQ3 2024Sep 29, 202417.8%+1.0
Q3 FY2024CQ2 2024Jun 30, 202416.6%+1.0
Q2 FY2024CQ1 2024Mar 31, 202416.6%+1.8
Q1 FY2024CQ4 2023Dec 31, 202315.5%−1.6
Q4 FY2023CQ3 2023Oct 1, 202316.8%−0.5
Q3 FY2023CQ2 2023Jul 2, 202315.6%−0.6
Q2 FY2023CQ1 2023Apr 2, 202314.8%−1.1
Q1 FY2023CQ4 2022Jan 1, 202317.1%+0.8
Q4 FY2022CQ3 2022Oct 2, 202217.3%+1.2
Q3 FY2022CQ2 2022Jul 3, 202216.2%+0.6
Q2 FY2022CQ1 2022Apr 3, 202215.9%+0.9
Q1 FY2022CQ4 2021Jan 2, 202216.3%+1.1
Q4 FY2021CQ3 2021Oct 3, 202116.1%−0.5
Q3 FY2021CQ2 2021Jun 27, 202115.7%−0.4
Q2 FY2021CQ1 2021Mar 28, 202114.9%+1.7
Q1 FY2021CQ4 2020Dec 27, 202015.2%+1.4
Q4 FY2020CQ3 2020Sep 27, 202016.6%+5.4
Q3 FY2020CQ2 2020Jun 28, 202016.1%+1.8
Q2 FY2020CQ1 2020Mar 29, 202013.2%−0.1
Q1 FY2020CQ4 2019Dec 29, 201913.8%+0.0
Q4 FY2019CQ3 2019Sep 29, 201911.3%−0.8
Q3 FY2019CQ2 2019Jun 30, 201914.3%−0.0
Q2 FY2019CQ1 2019Mar 31, 201913.4%+0.3
Q1 FY2019CQ4 2018Dec 30, 201813.8%+1.4
Q4 FY2018CQ3 2018Sep 30, 201812.1%−1.7
Q3 FY2018CQ2 2018Jul 1, 201814.3%+1.2
Q2 FY2018CQ1 2018Apr 1, 201813.1%+0.9
Q1 FY2018CQ4 2017Dec 31, 201712.4%+0.2
Q4 FY2017CQ3 2017Oct 1, 201713.7%+0.4
Q3 FY2017CQ2 2017Jul 2, 201713.2%–
Q2 FY2017CQ1 2017Apr 2, 201712.2%–
Q1 FY2017CQ4 2016Jan 1, 201712.2%–
Q4 FY2016CQ3 2016Oct 2, 201613.3%–

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