ACM vs HHS: Correlation
How closely do AECOM (ACM) and Harte Hanks, Inc. (HHS) trade together? Their weekly returns over three years give a correlation of -0.23, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACM and HHS?
On 3 years of weekly data the ACM/HHS correlation comes out at -0.23, negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.29 over 1 year against -0.23 over 3. The 5-year figure is -0.06, and annualized covariance runs at -441.5 %².
Within ACM's tracked universe of 16 assets, HHS comes in at #10 by 3-year correlation. The last year tells two different stories: HHS led by 66.5 percentage points, -46.6% for ACM against +19.9% for HHS. Note the risk asymmetry: HHS runs 2.3 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
ACM vs HHS: side by side
| ACM (AECOM) | HHS (Harte Hanks, Inc.) | |
|---|---|---|
| 1-year return | -46.6% | +19.9% |
| 5-year return | +5.2% | -33.4% |
| Volatility (ann.) | 29.1% | 67.2% |
| Beta vs S&P 500 | 0.79 | 0.84 |
| Max drawdown (3Y) | -54.1% | -77.2% |
| Market cap | $8.5B | – |
| P/E (trailing) | 22.9 | – |
| Dividend yield | 1.83% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ACM | HHS |
|---|---|---|
| 2022 | +10.7% | +53.8% |
| 2023 | +9.8% | -41.9% |
| 2024 | +16.7% | -24.2% |
| 2025 | -9.9% | -41.6% |
| 2026 | -29.7% | +43.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACM and HHS good diversifiers for each other?
By historical standards, yes. A correlation of -0.23 means the two rarely move for the same reasons.
FAQ
What is the correlation between ACM and HHS?
As of 2026-08-27, the correlation of weekly returns between ACM and HHS is -0.23 over 3 years, -0.29 over 1 year and -0.06 over 5 years.
Is HHS a good diversifier for ACM?
By historical standards, yes. A correlation of -0.23 means the two rarely move for the same reasons.
What does a correlation of -0.23 mean?
A reading of -0.23 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/acm-vs-hhs.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/acm-vs-hhs/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ACM correlations · HHS correlations
