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Aecom vs Tetra Tech: revenue, profit, margins and growth compared

Aecom brought in $16.1B of revenue in fiscal 2025, Tetra Tech $5.4B in fiscal 2025. Revenue changed by +0.2% at Aecom and +4.7% at Tetra Tech on the year before, so Tetra Tech grew faster. Aecom kept 3.5% of its revenue as net profit, Tetra Tech 4.6%. Free cash flow was $684.9M at Aecom and $439.1M at Tetra Tech.

Side by side, latest fiscal year

ACMTTEK
Fiscal year endedFY2025 (September 30, 2025)FY2025 (September 28, 2025)
Revenue$16.1B$5.4B
Revenue growth+0.2%+4.7%
Net income$561.8M$247.7M
Net margin3.5%4.6%
Free cash flow$684.9M$439.1M
Free cash flow margin4.2%8.1%
Earnings per share (diluted)$4.21$0.93
Cash$1.6B$167.5M
Debt$2.7B$766.4M
Price to earnings14.536.5
Market value$7.8B$8.7B
Dividend yieldn/a0.73%
Rank by revenue in sector#75 of 778 · Consumer discretionary#188 of 778 · Consumer discretionary

Over the years

Revenue
ACM FY2018: $20.2BACM FY2019: $13.6BACM FY2020: $13.2BACM FY2021: $13.3BACM FY2022: $13.1BACM FY2023: $14.4BACM FY2024: $16.1BACM FY2025: $16.1BTTEK FY2018: $3BTTEK FY2019: $3.1BTTEK FY2020: $3BTTEK FY2021: $3.2BTTEK FY2022: $3.5BTTEK FY2023: $4.5BTTEK FY2024: $5.2BTTEK FY2025: $5.4BFY18FY19FY20FY21FY22FY23FY24FY25
ACM $16.1BTTEK $5.4B
Net income
ACM FY2018: $136.5MACM FY2019: -$261.1MACM FY2020: -$186.4MACM FY2021: $173.2MACM FY2022: $310.6MACM FY2023: $55.3MACM FY2024: $402.3MACM FY2025: $561.8MTTEK FY2018: $136.9MTTEK FY2019: $158.7MTTEK FY2020: $173.9MTTEK FY2021: $232.8MTTEK FY2022: $263.1MTTEK FY2023: $273.4MTTEK FY2024: $333.4MTTEK FY2025: $247.7MFY18FY19FY20FY21FY22FY23FY24FY25
ACM $561.8MTTEK $247.7M
Net margin
ACM FY2018: 0.7%ACM FY2019: -1.9%ACM FY2020: -1.4%ACM FY2021: 1.3%ACM FY2022: 2.4%ACM FY2023: 0.4%ACM FY2024: 2.5%ACM FY2025: 3.5%TTEK FY2018: 4.6%TTEK FY2019: 5.1%TTEK FY2020: 5.8%TTEK FY2021: 7.2%TTEK FY2022: 7.5%TTEK FY2023: 6.0%TTEK FY2024: 6.4%TTEK FY2025: 4.6%FY18FY19FY20FY21FY22FY23FY24FY25
ACM 3.5%TTEK 4.6%
Revenue growth
ACM FY2019: -32.3%ACM FY2020: -3.0%ACM FY2021: +0.8%ACM FY2022: -1.4%ACM FY2023: +9.4%ACM FY2024: +12.0%ACM FY2025: +0.2%TTEK FY2019: +4.8%TTEK FY2020: -3.6%TTEK FY2021: +7.3%TTEK FY2022: +9.0%TTEK FY2023: +29.1%TTEK FY2024: +15.0%TTEK FY2025: +4.7%FY19FY20FY21FY22FY23FY24FY25
ACM +0.2%TTEK +4.7%
Free cash flow
ACM FY2018: $661.3MACM FY2019: $677MACM FY2020: $215MACM FY2021: $568.4MACM FY2022: $576.6MACM FY2023: $590.4MACM FY2024: $707.9MACM FY2025: $684.9MTTEK FY2018: $176MTTEK FY2019: $192.3MTTEK FY2020: $250.2MTTEK FY2021: $295.8MTTEK FY2022: $325.6MTTEK FY2023: $341.6MTTEK FY2024: $340.6MTTEK FY2025: $439.1MFY18FY19FY20FY21FY22FY23FY24FY25
ACM $684.9MTTEK $439.1M

Fiscal years as each company reports them; the two may end in different months.

Questions about Aecom and Tetra Tech

Which is bigger by revenue, Aecom or Tetra Tech?

Aecom is bigger by revenue: $16.1B in fiscal 2025, against $5.4B for Tetra Tech in fiscal 2025.

Which keeps more of its revenue as profit, Aecom or Tetra Tech?

Aecom had a net margin of 3.5% in fiscal 2025; Tetra Tech had 4.6% in fiscal 2025.

Which grew revenue faster, Aecom or Tetra Tech?

In their latest fiscal years revenue changed by +0.2% at Aecom and +4.7% at Tetra Tech.

Where do these numbers come from?

From the annual reports each company files with the SEC (10-K, or 20-F and 40-F for foreign companies), read from their XBRL data. Margins and growth are simple arithmetic on those figures. Nothing here is a recommendation.

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