GHM vs RMT: Correlation
Measured on weekly returns over the past three years, Graham Corporation (GHM) and Royce Micro-Cap Trust, Inc. (RMT) carry a correlation of 0.58, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are GHM and RMT?
On 3 years of weekly data the GHM/RMT correlation comes out at 0.58, moderate. Little has changed lately, as the 1-year reading of 0.53 lands near the 3-year figure. The 5-year figure is 0.47, and annualized covariance runs at 587.2 %².
In GHM's tracked universe of 10 assets, RMT sits right near the top at #2. Correlation aside, the last 12 months split them widely, with GHM ahead by 37.8 points (+86.2% versus +48.4%). Risk is not evenly split, since GHM carries 2.4 times the volatility of the other side.
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.
GHM vs RMT: side by side
| GHM (Graham Corporation) | RMT (Royce Micro-Cap Trust, Inc.) | |
|---|---|---|
| 1-year return | +86.2% | +48.4% |
| 5-year return | +676.7% | +80.1% |
| Volatility (ann.) | 49.3% | 20.5% |
| Beta vs S&P 500 | 1.56 | 1.09 |
| Max drawdown (3Y) | -46.5% | -26.4% |
| Market cap | $1.1B | $0.8B |
| P/E (trailing) | 88.9 | 8.5 |
| Dividend yield | 0.00% | 5.57% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | GHM | RMT |
|---|---|---|
| 2022 | -22.7% | -16.8% |
| 2023 | +97.2% | +15.8% |
| 2024 | +134.4% | +14.0% |
| 2025 | +44.4% | +16.1% |
| 2026 | +45.4% | +39.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GHM and RMT good diversifiers for each other?
Somewhat, no more. With 0.58 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between GHM and RMT?
As of 2026-08-27, the correlation of weekly returns between GHM and RMT is 0.58 over 3 years, 0.53 over 1 year and 0.47 over 5 years.
Is RMT a good diversifier for GHM?
Somewhat, no more. With 0.58 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.58 mean?
A reading of 0.58 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/ghm-vs-rmt.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/ghm-vs-rmt/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: GHM correlations · RMT correlations
