ACA vs RMT: Correlation
How closely do Arcosa, Inc. (ACA) and Royce Micro-Cap Trust, Inc. (RMT) trade together? Their weekly returns over three years give a correlation of 0.66, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACA and RMT?
Across a 3-year window, the weekly returns of ACA and RMT correlate at 0.66, strong. The past 12 months show a weaker link (0.42) than the 3-year average (0.66). Stretching to 5 years gives 0.61, with an annualized covariance of 434.0 %².
Within ACA's tracked universe of 23 assets, RMT comes in at #4 by 3-year correlation. Their 12-month results are close: +47.0% for ACA against +48.4% for RMT. One caveat on sizing: ACA is 1.6 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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 RMT: side by side
| ACA (Arcosa, Inc.) | RMT (Royce Micro-Cap Trust, Inc.) | |
|---|---|---|
| 1-year return | +47.0% | +48.4% |
| 5-year return | +186.5% | +80.1% |
| Volatility (ann.) | 31.9% | 20.5% |
| Beta vs S&P 500 | 1.23 | 1.09 |
| Max drawdown (3Y) | -36.6% | -26.4% |
| Market cap | $7.1B | $0.8B |
| P/E (trailing) | 32.5 | 8.5 |
| Dividend yield | 0.14% | 5.57% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ACA | RMT |
|---|---|---|
| 2022 | +3.5% | -16.8% |
| 2023 | +52.5% | +15.8% |
| 2024 | +17.3% | +14.0% |
| 2025 | +10.2% | +16.1% |
| 2026 | +37.0% | +39.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACA and RMT good diversifiers for each other?
To a limited degree. At 0.66 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between ACA and RMT?
Using weekly returns as of 2026-08-27: 0.66 over 3 years, with 0.42 over the last year and 0.61 over 5 years.
Is RMT a good diversifier for ACA?
To a limited degree. At 0.66 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.66 mean?
A reading of 0.66 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/aca-vs-rmt.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/aca-vs-rmt/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ACA correlations · RMT correlations
