STN vs. ACM
STN (Stantec Inc) and ACM (AECOM) are both stocks. Both operate in the Engineering & Construction industry within the Industrials sector. Over the past 10 years, STN returned 12.23%/yr vs 8.66%/yr for ACM. At a 0.40 correlation, their price movements are largely independent.
Performance
STN vs. ACM - Performance Comparison
Loading charts...
Returns By Period
The year-to-date returns for both stocks are quite close, with STN having a -27.15% return and ACM slightly lower at -28.33%. Over the past 10 years, STN has outperformed ACM with an annualized return of 12.23%, while ACM has yielded a comparatively lower 8.66% annualized return.
STN
- 1D
- 1.20%
- 1M
- -10.50%
- YTD
- -27.15%
- 6M
- -27.02%
- 1Y
- -34.47%
- 3Y*
- 3.76%
- 5Y*
- 10.11%
- 10Y*
- 12.23%
ACM
- 1D
- -1.38%
- 1M
- -5.80%
- YTD
- -28.33%
- 6M
- -29.98%
- 1Y
- -37.37%
- 3Y*
- -6.29%
- 5Y*
- 2.74%
- 10Y*
- 8.66%
STN vs. ACM - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
STN Stantec Inc | -27.15% | 21.08% | -1.44% | 68.90% | -13.76% | 75.67% | 16.56% | 31.83% | -20.43% | 12.80% |
ACM AECOM | -28.33% | -9.91% | 16.67% | 9.77% | 10.72% | 55.38% | 15.42% | 62.75% | -28.67% | 2.17% |
Correlation
The correlation between STN and ACM is 0.55, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.55 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.51 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.53 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.43 |
Correlation (All Time) Calculated using the full available price history since May 10, 2007 | 0.40 |
The correlation between STN and ACM shifts across timeframes, from 0.40 (all time) to 0.55 (1 year), reflecting how their relationship changes across market environments.
Fundamentals
STN:
$7.81B
ACM:
$8.86B
STN:
CA$3.98
ACM:
$3.82
STN:
24.37
ACM:
17.75
STN:
1.01
ACM:
0.10
STN:
1.43
ACM:
0.56
STN:
3.27
ACM:
3.90
STN:
CA$7.77B
ACM:
$15.99B
STN:
CA$3.11B
ACM:
$1.24B
STN:
CA$1.05B
ACM:
$976.83M
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
STN vs. ACM — Risk / Return Rank
STN
ACM
STN vs. ACM - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Stantec Inc (STN) and AECOM (ACM). 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| STN | ACM | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.07 | ||
| Sortino ratioReturn per unit of downside risk | -0.12 | ||
| Omega ratioGain probability vs. loss probability | 0.78 | 0.78 | +0.01 |
| Calmar ratioReturn relative to maximum drawdown | -0.86 | -0.76 | -0.10 |
| Martin ratioReturn relative to average drawdown | -2.01 | -1.43 | -0.58 |
Loading charts...
Drawdowns
STN vs. ACM - Drawdown Comparison
The maximum STN drawdown since its inception was -67.42%, which is greater than ACM's maximum drawdown of -59.97%. Use the drawdown chart below to compare losses from any high point for STN and ACM.
Loading charts...
Drawdown Indicators
| STN | ACM | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -67.42% | -59.97% | -7.45% |
Max Drawdown (1Y)Largest decline over 1 year | -40.15% | -49.15% | +9.00% |
Max Drawdown (3Y)Largest decline over 3 years | -40.15% | -49.15% | +9.00% |
Max Drawdown (5Y)Largest decline over 5 years | -40.15% | -49.15% | +9.00% |
Max Drawdown (10Y)Largest decline over 10 years | -40.15% | -54.12% | +13.97% |
Current DrawdownCurrent decline from peak | -39.44% | -49.15% | +9.71% |
Average DrawdownAverage peak-to-trough decline | -17.14% | -18.51% | +1.37% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 17.14% | 26.16% | -9.02% |
Volatility
STN vs. ACM - Volatility Comparison
The current volatility for Stantec Inc (STN) is 7.57%, while AECOM (ACM) has a volatility of 8.71%. This indicates that STN experiences smaller price fluctuations and is considered to be less risky than ACM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| STN | ACM | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 7.57% | 8.71% | -1.14% |
Volatility (6M)Calculated over the trailing 6-month period | 24.33% | 26.43% | -2.10% |
Volatility (1Y)Calculated over the trailing 1-year period | 28.20% | 32.33% | -4.13% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 25.33% | 26.69% | -1.36% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 25.66% | 31.17% | -5.51% |
Dividends
STN vs. ACM - Dividend Comparison
STN's dividend yield for the trailing twelve months is around 1.15%, less than ACM's 1.68% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
ACM AECOM | 1.68% | 1.09% | 0.82% | 0.78% | 0.71% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
STN Stantec Inc | 1.15% | 0.69% | 0.78% | 0.79% | 1.14% | 1.17% | 1.42% | 1.55% | 1.91% | 1.79% | 1.78% | 1.69% |
Financials
STN vs. ACM - Financials Comparison
This section allows you to compare key financial metrics between Stantec Inc and AECOM. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
STN vs. ACM - Profitability Comparison
STN - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Stantec Inc reported a gross profit of 821.42M and revenue of 2.07B. Therefore, the gross margin over that period was 39.6%.
ACM - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, AECOM reported a gross profit of 296.50M and revenue of 3.80B. Therefore, the gross margin over that period was 7.8%.
STN - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Stantec Inc reported an operating income of 175.05M and revenue of 2.07B, resulting in an operating margin of 8.4%.
ACM - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, AECOM reported an operating income of 229.65M and revenue of 3.80B, resulting in an operating margin of 6.0%.
STN - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Stantec Inc reported a net income of 111.09M and revenue of 2.07B, resulting in a net margin of 5.4%.
ACM - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, AECOM reported a net income of 179.86M and revenue of 3.80B, resulting in a net margin of 4.7%.
Frequently Asked Questions
STN and ACM have a correlation of 0.55, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
ACM has higher volatility (8.71%) compared to STN (7.57%). In terms of maximum drawdown, STN dropped -67.42% vs ACM's -59.97%.
ACM currently has the higher Sharpe Ratio (-1.16 vs -1.23), 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.
Find the right allocation for STN and ACM
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer