CLNE vs PFX: Correlation
Clean Energy Fuels Corp. (CLNE) and PhenixFIN Corporation (PFX) show a negative relationship: their 3-year correlation of weekly returns is -0.20.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CLNE and PFX?
Across a 3-year window, the weekly returns of CLNE and PFX correlate at -0.20, negative, meaning they tend to move in opposite directions. Lately the two have drifted apart, with the 1-year correlation at -0.35 versus -0.20 over 3 years. Stretching to 5 years gives -0.06, with an annualized covariance of -268.5 %².
PFX is close to the least connected end of CLNE's tracked universe, ranking #8 of 10. Correlation aside, the last 12 months split them widely, with PFX ahead by 47.3 points (-39.4% versus +7.9%). Risk is not evenly split, since CLNE carries 2.6 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.
CLNE vs PFX: side by side
| CLNE (Clean Energy Fuels Corp.) | PFX (PhenixFIN Corporation) | |
|---|---|---|
| 1-year return | -39.4% | +7.9% |
| 5-year return | -79.6% | +36.0% |
| Volatility (ann.) | 58.8% | 22.8% |
| Beta vs S&P 500 | 1.36 | 0.08 |
| Max drawdown (3Y) | -71.5% | -29.6% |
| Market cap | $0.4B | $0.1B |
| P/E (trailing) | – | 22.7 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CLNE | PFX |
|---|---|---|
| 2022 | -15.2% | -25.5% |
| 2023 | -26.3% | +36.1% |
| 2024 | -34.5% | +23.3% |
| 2025 | -16.3% | -10.1% |
| 2026 | -23.8% | +19.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CLNE and PFX good diversifiers for each other?
Yes. With a correlation of -0.20, CLNE and PFX have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between CLNE and PFX?
As of 2026-08-27, the correlation of weekly returns between CLNE and PFX is -0.20 over 3 years, -0.35 over 1 year and -0.06 over 5 years.
Is PFX a good diversifier for CLNE?
Yes. With a correlation of -0.20, CLNE and PFX have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.20 mean?
On the −1 to +1 scale, -0.20 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/clne-vs-pfx.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/clne-vs-pfx/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: CLNE correlations · PFX correlations
