ACA vs MHH: Correlation
Measured on weekly returns over the past three years, Arcosa, Inc. (ACA) and Mastech Digital, Inc (MHH) carry a correlation of 0.38, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACA and MHH?
Over the past 3 years, ACA and MHH moved with a correlation of 0.38, which is moderate. Recent behaviour matches the longer record: 0.38 over 1 year against 0.38 over 3. Over 5 years the correlation is 0.29, and the annualized covariance of weekly returns is 571.8 %².
Among the 23 assets we track against ACA, MHH sits near the bottom by co-movement, at rank #20. Correlation aside, the last 12 months split them widely, with ACA ahead by 50.0 points (+47.0% versus -3.0%).
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.
ACA vs MHH: side by side
| ACA (Arcosa, Inc.) | MHH (Mastech Digital, Inc) | |
|---|---|---|
| 1-year return | +47.0% | -3.0% |
| 5-year return | +186.5% | -56.7% |
| Volatility (ann.) | 31.9% | 46.7% |
| Beta vs S&P 500 | 1.23 | 0.80 |
| Max drawdown (3Y) | -36.6% | -65.6% |
| Market cap | $7.1B | $0.1B |
| P/E (trailing) | 32.5 | 43.4 |
| Dividend yield | 0.14% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ACA | MHH |
|---|---|---|
| 2022 | +3.5% | -35.5% |
| 2023 | +52.5% | -23.4% |
| 2024 | +17.3% | +76.7% |
| 2025 | +10.2% | -53.2% |
| 2026 | +37.0% | +5.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACA and MHH good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.38 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between ACA and MHH?
The ACA/MHH correlation stands at 0.38 on a 3-year window (1 year: 0.38, 5 years: 0.29), computed from weekly returns as of 2026-08-27.
Is MHH a good diversifier for ACA?
Yes, to a useful degree: a correlation of 0.38 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.38 mean?
On the −1 to +1 scale, 0.38 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/aca-vs-mhh.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/aca-vs-mhh/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ACA correlations · MHH correlations
