Tetra Tech is trading with a PEG ratio of 0.19, based on Aug 2, 2026 data. Dividing the 19.86 PE ratio by the 106.2% earnings growth rate yields this valuation metric.
Historically, Tetra Tech shows a PEG ratio averaging 1.29 across the past ten years. At 0.19, today's PEG ratio sits 85% below its historical average. The ten years high occurred in the Oct 2023 quarter at 5.79, reflecting maximum valuation relative to growth. The minimum was hit in the Apr 2017 quarter at 0.05, indicating optimal value relative to growth during that period.
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| 2025 | N/A | 35.46 | -24.8% |
| 2024 | 1.73 | 37.12 | 21.4% |
| 2023 | 5.79 | 29.52 | 5.1% |
| 2022 | 1.87 | 26.23 | 14% |
| 2021 | 1.03 | 35.32 | 34.4% |
| 2020 | 2.77 | 28.52 | 10.3% |
| 2019 | 1.59 | 29.29 | 18.4% |
| 2018 | 1.43 | 27.88 | 19.5% |
| 2017 | 0.55 | 22.71 | 41.4% |
| 2016 | 0.2 | 24.46 | 123.1% |
| 2015 | N/A | 38.34 | -61.8% |
| 2014 | 0 | 14.82 | 3,500% |
| 2013 | N/A | N/A | -103% |
| 2012 | 1.15 | 15.92 | 13.8% |
| 2011 | 0.81 | 12.92 | 16% |
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| Jun 2026 | 0.16 | 17.52 | 106.2% |
| Mar 2026 | 0.13 | 17.73 | 140% |
| Dec 2025 | 0.67 | 25.4 | 38.1% |
| Sep 2025 | N/A | 35.46 | -24.8% |
| Jun 2025 | N/A | 44 | -25.7% |
| Mar 2025 | N/A | 41.64 | -30% |
| Dec 2024 | 3.57 | 41.06 | 11.5% |
| Sep 2024 | 1.73 | 37.12 | 21.4% |
| Jun 2024 | N/A | 37.52 | -4.4% |
| Mar 2024 | N/A | 36.94 | -11.5% |
| Dec 2023 | N/A | 38.37 | -25.6% |
| Oct 2023 | 5.79 | 29.52 | 5.1% |
| Jul 2023 | 1.76 | 28.73 | 16.3% |
| Apr 2023 | 1.38 | 26 | 18.9% |
| Jan 2023 | 0.91 | 24.82 | 27.2% |
TTEK's PEG ratio today is below the 3, 5 and 10-year averages.
Tetra Tech's PEG of 0.19 is below the Industrials sector and the industry average. Compared to its Industrials sector average of 1.1, Tetra Tech's PEG is 83% lower.
TTEK has a PEG ratio below that of peer stocks WM and CLH.
| Stock name | PEG ratio | Market cap |
|---|---|---|
| TTEK Tetra Tech Inc | 0.19 | $8.73B |
| MYRG Myr Group Inc | 0.25 | $5.01B |
| CLH Clean Harbors Inc | 2.41 | $16.68B |
| WM Waste Management Inc | 6.52 | $90.51B |
| ACM AECOM | N/A | $9.64B |
| ICFI ICF International Inc | N/A | $1.46B |
According to Aug 2, 2026 data, TTEK's PEG ratio sits at 0.19.
Over the last 3 years, TTEK's PEG ratio has settled near 2.01.
Over the last 5 years, TTEK's PEG ratio has settled near 1.55.
TTEK's PEG ratio peaked at 5.79 during the Oct 2023 quarter - the highest in ten years.
Compared to the 10-year average, TTEK's PEG ratio is 85% lower.
The 0.19 PEG ratio for TTEK reflects strong earnings growth outpacing the current valuation.
PEG equals PE divided by EPS growth (YoY TTM). As of Aug 2, 2026, Tetra Tech has a P/E ratio of 19.86. Earnings grew at 106.2% over the TTM period ending Jun 2026. Applying the formula, this produces a price to earnings growth ratio of 0.19. PEG RATIO(0.19) = PE RATIO(19.86) / EPS GROWTH(106.2%)
All PEG ratio stats are based on quarterly TTM periods, unless otherwise specified.