METCB vs RARE: Correlation
Measured on weekly returns over the past three years, Ramaco Resources, Inc. (METCB) and Ultragenyx Pharmaceutical Inc. (RARE) carry a correlation of -0.22, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are METCB and RARE?
Across a 3-year window, the weekly returns of METCB and RARE correlate at -0.22, negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.17) sits close to the 3-year figure. Stretching to 5 years gives n/a, with an annualized covariance of -666.3 %².
Out of 11 assets tracked against METCB, RARE lands near the bottom at #11. Their recent paths diverged sharply: over the last 12 months RARE outperformed by 40.3 percentage points (-53.0% for METCB against -12.7% for RARE).
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.
METCB vs RARE: side by side
| METCB (Ramaco Resources, Inc.) | RARE (Ultragenyx Pharmaceutical Inc.) | |
|---|---|---|
| 1-year return | -53.0% | -12.7% |
| 5-year return | n/a | -72.6% |
| Volatility (ann.) | 59.3% | 51.1% |
| Beta vs S&P 500 | 0.57 | 1.38 |
| Max drawdown (3Y) | -71.4% | -68.8% |
| Market cap | $0.5B | $2.6B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | METCB | RARE |
|---|---|---|
| 2022 | – | -44.9% |
| 2023 | – | +3.2% |
| 2024 | -17.4% | -12.0% |
| 2025 | +25.9% | -45.3% |
| 2026 | -34.6% | +14.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are METCB and RARE good diversifiers for each other?
Yes: at -0.22, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between METCB and RARE?
Using weekly returns as of 2026-08-27: -0.22 over 3 years, with -0.17 over the last year and n/a over 5 years.
Is RARE a good diversifier for METCB?
Yes: at -0.22, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.22 mean?
On the −1 to +1 scale, -0.22 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/metcb-vs-rare.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/metcb-vs-rare/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: METCB correlations · RARE correlations
