CLNE vs RMT: Correlation
Clean Energy Fuels Corp. (CLNE) and Royce Micro-Cap Trust, Inc. (RMT) show a moderate relationship: their 3-year correlation of weekly returns is 0.49.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CLNE and RMT?
Over the past 3 years, CLNE and RMT moved with a correlation of 0.49, which is moderate. The past 12 months show a weaker link (0.26) than the 3-year average (0.49). Over 5 years the correlation is 0.55, and the annualized covariance of weekly returns is 591.5 %².
By 3-year correlation, RMT places #4 of the 10 assets tracked against CLNE. The last year tells two different stories: RMT led by 87.8 percentage points, -39.4% for CLNE against +48.4% for RMT. One caveat on sizing: CLNE is 2.9 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.
CLNE vs RMT: side by side
| CLNE (Clean Energy Fuels Corp.) | RMT (Royce Micro-Cap Trust, Inc.) | |
|---|---|---|
| 1-year return | -39.4% | +48.4% |
| 5-year return | -79.6% | +80.1% |
| Volatility (ann.) | 58.8% | 20.5% |
| Beta vs S&P 500 | 1.36 | 1.09 |
| Max drawdown (3Y) | -71.5% | -26.4% |
| Market cap | $0.4B | $0.8B |
| P/E (trailing) | – | 8.5 |
| Dividend yield | 0.00% | 5.57% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CLNE | RMT |
|---|---|---|
| 2022 | -15.2% | -16.8% |
| 2023 | -26.3% | +15.8% |
| 2024 | -34.5% | +14.0% |
| 2025 | -16.3% | +16.1% |
| 2026 | -23.8% | +39.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CLNE and RMT good diversifiers for each other?
A fair diversifier. At 0.49, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between CLNE and RMT?
Using weekly returns as of 2026-08-27: 0.49 over 3 years, with 0.26 over the last year and 0.55 over 5 years.
Is RMT a good diversifier for CLNE?
A fair diversifier. At 0.49, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.49 mean?
A reading of 0.49 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/clne-vs-rmt.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/clne-vs-rmt/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: CLNE correlations · RMT correlations
