AECOM (ACM) vs Tetra Tech (TTEK)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 8, 2026.
Summary
Tetra Tech (TTEK) has outperformed AECOM (ACM) over the past year, losing 4.1% versus a loss of 55.2%. Over five years, TTEK leads with a +0.9% price change compared with -6.4% for ACM. Tetra Tech is the larger company by market cap ($8.55 billion vs $7.65 billion), about 1.1 times the size.
On valuation, AECOM trades at a lower forward P/E (9.3x vs 19.2x for Tetra Tech). AECOM offers the higher dividend yield (2.00% vs 0.80%). Tetra Tech converts more of its revenue into profit, with a net margin of 4.6% versus 3.5%.
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | ACM | TTEK |
|---|---|---|
| Share price | $59.46 | $33.41 |
| Market cap | $7.65B | $8.55B |
| 1-day change | +2.02% | +2.11% |
| YTD return | -37.63% | -0.39% |
| 1-year return | -55.17% | -4.10% |
| 5-year return | -6.36% | +0.94% |
| P/E ratio (TTM) | 20.94 | 20.13 |
| Forward P/E | 9.33 | 19.23 |
| EPS (TTM) | $2.84 | $1.66 |
| Dividend yield | 2.00% | 0.80% |
| Annual dividend | $1.19 | $0.267 |
| Revenue (latest FY) | $16.14B | $5.44B |
| Revenue growth (YoY) | +0.21% | +4.69% |
| Net income (latest FY) | $561.77M | $247.95M |
| Gross margin | 7.54% | 17.66% |
| Operating margin | 6.36% | 7.50% |
| Net margin | 3.48% | 4.56% |
| 52-week high | $135.52 | $43.14 |
| 52-week low | $56.39 | $25.81 |
| Distance from 52-week high | -56.12% | -22.55% |
| Analyst consensus | strong_buy | none |
| Avg. price target upside | +44.77% | +20.71% |
| Average volume | 1.93M | 2.50M |
| Shares outstanding | 128.70M | 256.04M |
| Employees | 51,000 | 25,000 |
| Sector | Consumer Discretionary | Consumer Discretionary |
| Industry | Military/Government/Technical | Military/Government/Technical |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- TTEK has outperformed ACM by 51.1 percentage points over the past year.
- AECOM offers a meaningfully higher dividend yield (2.00% vs 0.80%).
About AECOM
ACM stock →AECOM, together with its subsidiaries, provides professional infrastructure consulting services for governments, businesses, and organizations internationally. The company operates in three segments: Americas, International, and AECOM Capital.
Consumer Discretionary · Military/Government/Technical · 51,000 employees
About Tetra Tech
TTEK stock →Tetra Tech, Inc. provides consulting and engineering services focusing on water, environment, and sustainable infrastructure in the United States and internationally.
Consumer Discretionary · Military/Government/Technical · 25,000 employees
ACM vs TTEK FAQ
Which is bigger, AECOM or Tetra Tech?
Tetra Tech (TTEK) is larger, with a market capitalization of $8.55B compared with $7.65B for AECOM (ACM).
Which stock has performed better over the past year, ACM or TTEK?
TTEK returned -4.10% over the past 12 months, compared with -55.17% for ACM (price return, excluding dividends). Past performance does not predict future results.
Which has the lower P/E ratio, ACM or TTEK?
TTEK has the lower trailing P/E at 20.1, versus 20.9 for ACM. A lower P/E is not by itself a sign of a better investment; it can reflect slower expected growth or higher risk.
Which pays a higher dividend, AECOM or Tetra Tech?
AECOM has the higher yield at 2.00%, compared with 0.80% for Tetra Tech.
Are AECOM and Tetra Tech in the same industry?
Yes. Both are classified in the Military/Government/Technical industry within the Consumer Discretionary sector.