ACM vs. RKLB
ACM (AECOM) and RKLB (Rocket Lab USA, Inc.) are both stocks. Both are in the Industrials sector — ACM in Engineering & Construction, RKLB in Aerospace & Defense. Over the past 3 years, ACM returned -5.34%/yr vs 158.32%/yr for RKLB. At a 0.34 correlation, their price movements are largely independent.
Performance
ACM vs. RKLB - Performance Comparison
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Returns By Period
In the year-to-date period, ACM achieves a -25.95% return, which is significantly lower than RKLB's 46.77% return.
ACM
- 1D
- 0.76%
- 1M
- -1.67%
- YTD
- -25.95%
- 6M
- -28.58%
- 1Y
- -36.69%
- 3Y*
- -5.34%
- 5Y*
- 2.52%
- 10Y*
- 8.79%
RKLB
- 1D
- -10.79%
- 1M
- -17.94%
- YTD
- 46.77%
- 6M
- 66.51%
- 1Y
- 302.95%
- 3Y*
- 158.32%
- 5Y*
- —
- 10Y*
- —
ACM vs. RKLB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
ACM AECOM | -25.95% | -9.91% | 16.67% | 9.77% | 10.72% | 22.89% |
RKLB Rocket Lab USA, Inc. | 46.77% | 173.89% | 360.58% | 46.68% | -69.30% | 8.67% |
Correlation
The correlation between ACM and RKLB is 0.29, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.29 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.33 |
Correlation (All Time) Calculated using the full available price history since Aug 24, 2021 | 0.34 |
Fundamentals
ACM:
$9.16B
RKLB:
$61.99B
ACM:
$3.82
RKLB:
-$0.33
ACM:
0.58
RKLB:
83.69
ACM:
4.03
RKLB:
27.38
ACM:
$15.99B
RKLB:
$679.58M
ACM:
$1.24B
RKLB:
$248.43M
ACM:
$976.83M
RKLB:
-$177.36M
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Return for Risk
ACM vs. RKLB — Risk / Return Rank
ACM
RKLB
ACM vs. RKLB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for AECOM (ACM) and Rocket Lab USA, Inc. (RKLB). 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.
| ACM | RKLB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -4.27 | ||
| Sortino ratioReturn per unit of downside risk | -4.64 | ||
| Omega ratioGain probability vs. loss probability | 0.78 | 1.38 | -0.60 |
| Calmar ratioReturn relative to maximum drawdown | -0.76 | 6.74 | -7.50 |
| Martin ratioReturn relative to average drawdown | -1.46 | 15.44 | -16.89 |
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Drawdowns
ACM vs. RKLB - Drawdown Comparison
The maximum ACM drawdown since its inception was -59.97%, smaller than the maximum RKLB drawdown of -82.96%. Use the drawdown chart below to compare losses from any high point for ACM and RKLB.
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Drawdown Indicators
| ACM | RKLB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -59.97% | -82.96% | +22.99% |
Max Drawdown (1Y)Largest decline over 1 year | -48.61% | -43.01% | -5.60% |
Max Drawdown (3Y)Largest decline over 3 years | -48.61% | -55.49% | +6.88% |
Max Drawdown (5Y)Largest decline over 5 years | -48.61% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -54.12% | — | — |
Current DrawdownCurrent decline from peak | -47.45% | -31.84% | -15.61% |
Average DrawdownAverage peak-to-trough decline | -18.48% | -51.29% | +32.81% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 25.27% | 18.75% | +6.52% |
Volatility
ACM vs. RKLB - Volatility Comparison
The current volatility for AECOM (ACM) is 8.02%, while Rocket Lab USA, Inc. (RKLB) has a volatility of 31.54%. This indicates that ACM experiences smaller price fluctuations and is considered to be less risky than RKLB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| ACM | RKLB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 8.02% | 31.54% | -23.52% |
Volatility (6M)Calculated over the trailing 6-month period | 26.30% | 73.47% | -47.17% |
Volatility (1Y)Calculated over the trailing 1-year period | 32.14% | 93.03% | -60.89% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 26.70% | 81.62% | -54.92% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 31.18% | 81.62% | -50.44% |
Dividends
ACM vs. RKLB - Dividend Comparison
ACM's dividend yield for the trailing twelve months is around 1.63%, while RKLB has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 |
|---|---|---|---|---|---|
ACM AECOM | 1.63% | 1.09% | 0.82% | 0.78% | 0.71% |
RKLB Rocket Lab USA, Inc. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Financials
ACM vs. RKLB - Financials Comparison
This section allows you to compare key financial metrics between AECOM and Rocket Lab USA, Inc.. 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
ACM vs. RKLB - Profitability Comparison
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%.
RKLB - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Rocket Lab USA, Inc. reported a gross profit of 76.49M and revenue of 200.35M. Therefore, the gross margin over that period was 38.2%.
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%.
RKLB - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Rocket Lab USA, Inc. reported an operating income of -55.97M and revenue of 200.35M, resulting in an operating margin of -27.9%.
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%.
RKLB - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Rocket Lab USA, Inc. reported a net income of -45.02M and revenue of 200.35M, resulting in a net margin of -22.5%.
Frequently Asked Questions
ACM and RKLB have a correlation of 0.29, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
RKLB has higher volatility (31.54%) compared to ACM (8.02%). In terms of maximum drawdown, ACM dropped -59.97% vs RKLB's -82.96%.
RKLB currently has the higher Sharpe Ratio (3.12 vs -1.15), 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.
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