ACA vs. TTEK

Last updated Jun 4, 2026

ACA (Arcosa, Inc.) and TTEK (Tetra Tech, Inc.) are both stocks. Both are in the Industrials sector — ACA in Infrastructure Operations, TTEK in Engineering & Construction. Over the past 5 years, ACA returned 15.86%/yr vs 3.77%/yr for TTEK. At a 0.43 correlation, their price movements are largely independent.

Performance

ACA vs. TTEK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Arcosa, Inc. (ACA) and Tetra Tech, Inc. (TTEK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ACA achieves a 16.54% return, which is significantly higher than TTEK's -16.76% return.

ACA

• 1D: 0.77%
• 1M: 0.50%
• YTD: 16.54%
• 6M: 15.77%
• 1Y: 40.91%
• 3Y*: 21.14%
• 5Y*: 15.86%
• 10Y*: —

TTEK

• 1D: 2.47%
• 1M: -11.99%
• YTD: -16.76%
• 6M: -19.63%
• 1Y: -20.12%
• 3Y*: -2.52%
• 5Y*: 3.77%
• 10Y*: 17.31%

*Multi-year figures are annualized to reflect compound growth (CAGR)

ACA vs. TTEK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
ACA Arcosa, Inc.	16.54%	10.15%	17.34%	52.54%	3.51%	-3.73%	23.87%	61.89%	31.86%
TTEK Tetra Tech, Inc.	-16.76%	-15.19%	19.98%	15.74%	-13.96%	47.46%	35.34%	67.76%	-22.20%

Correlation

The correlation between ACA and TTEK is 0.39, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.39
Correlation (3Y) Calculated over the trailing 3-year period	0.41
Correlation (5Y) Calculated over the trailing 5-year period	0.44
Correlation (All Time) Calculated using the full available price history since Oct 31, 2018	0.43

Fundamentals

Market Cap ACA : $6.09B TTEK : $7.30B
EPS ACA : $4.54 TTEK : $2.20
PE Ratio ACA : 27.29 TTEK : 12.66
PEG Ratio ACA : 0.37 TTEK : 3.24
PS Ratio ACA : 2.15 TTEK : 1.50
PB Ratio ACA : 2.31 TTEK : 3.92
Total Revenue (TTM) ACA : $2.82B TTEK : $4.91B
Gross Profit (TTM) ACA : $642.70M TTEK : $960.15M
EBITDA (TTM) ACA : $460.00M TTEK : $627.52M

Return for Risk

ACA vs. TTEK — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

ACA

ACA Risk / Return Rank: 73
ACA Sharpe Ratio Rank: 74
ACA Sortino Ratio Rank: 71
ACA Omega Ratio Rank: 72
ACA Calmar Ratio Rank: 73
ACA Martin Ratio Rank: 77

TTEK

TTEK Risk / Return Rank: 17
TTEK Sharpe Ratio Rank: 16
TTEK Sortino Ratio Rank: 16
TTEK Omega Ratio Rank: 16
TTEK Calmar Ratio Rank: 22
TTEK Martin Ratio Rank: 13

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

ACA vs. TTEK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Arcosa, Inc. (ACA) and Tetra Tech, Inc. (TTEK). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	ACA	TTEK	Difference
Sharpe ratio Return per unit of total volatility	1.15	-0.58	+1.73
Sortino ratio Return per unit of downside risk	1.77	-0.66	+2.44
Omega ratio Gain probability vs. loss probability	1.25	0.91	+0.33
Calmar ratio Return relative to maximum drawdown	1.92	-0.53	+2.44
Martin ratio Return relative to average drawdown	5.65	-1.23	+6.88
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ACA vs. TTEK - Sharpe Ratio Comparison

The current ACA Sharpe Ratio is 1.15, which is higher than the TTEK Sharpe Ratio of -0.58. The chart below compares the historical Sharpe Ratios of ACA and TTEK, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	ACA	TTEK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.15	-0.58	+1.73
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.46	0.12	+0.34
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.54	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.66	0.34	+0.33

Drawdowns

ACA vs. TTEK - Drawdown Comparison

The maximum ACA drawdown since its inception was -36.79%, smaller than the maximum TTEK drawdown of -77.89%. Use the drawdown chart below to compare losses from any high point for ACA and TTEK.

Drawdown Indicators

	ACA	TTEK	Difference
Max Drawdown Largest peak-to-trough decline	-36.79%	-77.89%	+41.10%
Max Drawdown (1Y) Largest decline over 1 year	-21.45%	-38.30%	+16.85%
Max Drawdown (3Y) Largest decline over 3 years	-36.63%	-47.50%	+10.87%
Max Drawdown (5Y) Largest decline over 5 years	-36.63%	-47.50%	+10.87%
Max Drawdown (10Y) Largest decline over 10 years	—	-47.50%	—
Current Drawdown Current decline from peak	-5.78%	-44.25%	+38.47%
Average Drawdown Average peak-to-trough decline	-11.47%	-20.65%	+9.18%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.25%	16.39%	-9.14%

Volatility

ACA vs. TTEK - Volatility Comparison

Arcosa, Inc. (ACA) has a higher volatility of 11.42% compared to Tetra Tech, Inc. (TTEK) at 10.81%. This indicates that ACA's price experiences larger fluctuations and is considered to be riskier than TTEK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ACA	TTEK	Difference
Volatility (1M) Calculated over the trailing 1-month period	11.42%	10.81%	+0.61%
Volatility (6M) Calculated over the trailing 6-month period	27.59%	27.17%	+0.42%
Volatility (1Y) Calculated over the trailing 1-year period	35.85%	34.93%	+0.92%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	34.49%	32.06%	+2.43%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	40.62%	32.03%	+8.59%

Dividends

ACA vs. TTEK - Dividend Comparison

ACA's dividend yield for the trailing twelve months is around 0.16%, less than TTEK's 0.96% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACA Arcosa, Inc.	0.16%	0.19%	0.21%	0.24%	0.37%	0.38%	0.36%	0.45%	0.00%	0.00%	0.00%	0.00%
TTEK Tetra Tech, Inc.	0.96%	0.75%	0.57%	0.61%	0.61%	0.45%	0.57%	0.66%	0.89%	0.81%	0.81%	1.19%

Financials

ACA vs. TTEK - Profitability Comparison

The chart below illustrates the profitability comparison between Arcosa, Inc. and Tetra Tech, Inc. over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

ACA - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Arcosa, Inc. reported a gross profit of 120.90M and revenue of 571.70M. Therefore, the gross margin over that period was 21.2%.

TTEK - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Tetra Tech, Inc. reported a gross profit of 214.09M and revenue of 1.22B. Therefore, the gross margin over that period was 17.6%.

ACA - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Arcosa, Inc. reported an operating income of -2.00M and revenue of 571.70M, resulting in an operating margin of -0.4%.

TTEK - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Tetra Tech, Inc. reported an operating income of 131.52M and revenue of 1.22B, resulting in an operating margin of 10.8%.

ACA - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Arcosa, Inc. reported a net income of 37.80M and revenue of 571.70M, resulting in a net margin of 6.6%.

TTEK - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Tetra Tech, Inc. reported a net income of 233.58M and revenue of 1.22B, resulting in a net margin of 19.1%.

Frequently Asked Questions

Can I hold both ACA and TTEK in my portfolio?

ACA and TTEK have a correlation of 0.39, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ACA or TTEK?

ACA has higher volatility (11.42%) compared to TTEK (10.81%). In terms of maximum drawdown, ACA dropped -36.79% vs TTEK's -77.89%.

Which has better risk-adjusted returns?

ACA currently has the higher Sharpe Ratio (1.15 vs -0.58), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.