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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 operating margin

Operating margin is operating income as a percentage of revenue.

Tetra Tech's operating margin for the twelve months ending Jun 28, 2026 was 12.1%. For fiscal 2025 it was 7.5%, against 9.6% the year before. The highest annual figure on record is 9.7% in fiscal 2022.

Annual operating margin

PeriodPeriod endValueChange (pts)
FY2025Sep 28, 20257.5%−2.1
FY2024Sep 29, 20249.6%+1.7
FY2023Oct 1, 20237.9%−1.8
FY2022Oct 2, 20229.7%+1.0
FY2021Oct 3, 20218.7%+0.6
FY2020Sep 27, 20208.1%+2.0
FY2019Sep 29, 20196.1%−0.3
FY2018Sep 30, 20186.4%−0.2
FY2017Oct 1, 20176.7%+1.4
FY2016Oct 2, 20165.3%+1.4
FY2015Sep 27, 20153.8%−2.4
FY2014Sep 28, 20146.2%+5.4
FY2013Sep 29, 20130.8%−5.4
FY2012Sep 30, 20126.1%+0.4
FY2011Oct 2, 20115.7%+0.0
FY2010Oct 3, 20105.7%+0.3
FY2009Sep 27, 20095.3%+0.4
FY2008Sep 28, 20085.0%–

Quarterly operating margin

Change is against the same quarter a year earlier.

Periods
PeriodPeriod endValueChange (pts)
Q3 FY2026CQ2 2026Jun 28, 202612.1%+0.0
Q2 FY2026CQ1 2026Mar 29, 202610.8%+7.8
Q1 FY2026CQ4 2025Dec 28, 202511.6%+10.1
Q4 FY2025CQ3 2025Sep 28, 202513.6%+3.2
Q3 FY2025CQ2 2025Jun 29, 202512.0%+2.5
Q2 FY2025CQ1 2025Mar 30, 20253.0%−6.4
Q1 FY2025CQ4 2024Dec 29, 20241.6%−7.5
Q4 FY2024CQ3 2024Sep 29, 202410.4%+1.9
Q3 FY2024CQ2 2024Jun 30, 20249.6%+1.5
Q2 FY2024CQ1 2024Mar 31, 20249.4%+4.1
Q1 FY2024CQ4 2023Dec 31, 20239.0%−1.2
Q4 FY2023CQ3 2023Oct 1, 20238.5%−2.0
Q3 FY2023CQ2 2023Jul 2, 20238.1%−1.3
Q2 FY2023CQ1 2023Apr 2, 20235.3%−3.5
Q1 FY2023CQ4 2022Jan 1, 202310.3%+0.1
Q4 FY2022CQ3 2022Oct 2, 202210.5%+1.3
Q3 FY2022CQ2 2022Jul 3, 20229.4%+0.7
Q2 FY2022CQ1 2022Apr 3, 20228.7%+0.7
Q1 FY2022CQ4 2021Jan 2, 202210.2%+1.5
Q4 FY2021CQ3 2021Oct 3, 20219.2%+0.3
Q3 FY2021CQ2 2021Jun 27, 20218.7%−0.2
Q2 FY2021CQ1 2021Mar 28, 20218.1%+1.6
Q1 FY2021CQ4 2020Dec 27, 20208.7%+0.7
Q4 FY2020CQ3 2020Sep 27, 20208.9%+6.4
Q3 FY2020CQ2 2020Jun 28, 20209.0%+1.1
Q2 FY2020CQ1 2020Mar 29, 20206.5%−0.1
Q1 FY2020CQ4 2019Dec 29, 20197.9%+0.2
Q4 FY2019CQ3 2019Sep 29, 20192.5%−3.4
Q3 FY2019CQ2 2019Jun 30, 20197.9%+0.6
Q2 FY2019CQ1 2019Mar 31, 20196.6%+0.5
Q1 FY2019CQ4 2018Dec 30, 20187.8%+1.4
Q4 FY2018CQ3 2018Sep 30, 20185.9%−1.6
Q3 FY2018CQ2 2018Jul 1, 20187.3%+0.6
Q2 FY2018CQ1 2018Apr 1, 20186.1%−0.4
Q1 FY2018CQ4 2017Dec 31, 20176.4%+0.4
Q4 FY2017CQ3 2017Oct 1, 20177.4%+1.0
Q3 FY2017CQ2 2017Jul 2, 20176.7%–
Q2 FY2017CQ1 2017Apr 2, 20176.5%–
Q1 FY2017CQ4 2016Jan 1, 20176.0%–
Q4 FY2016CQ3 2016Oct 2, 20166.5%–

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