ECF vs RELL: Correlation
Measured on weekly returns over the past three years, Ellsworth Growth and Income Fund Ltd. (ECF) and Richardson Electronics, Ltd. (RELL) carry a correlation of 0.46, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ECF and RELL?
Over the past 3 years, ECF and RELL moved with a correlation of 0.46, which is moderate. The past 12 months show a tighter link (0.57) than the 3-year average (0.46). Over 5 years the correlation is 0.38, and the annualized covariance of weekly returns is 320.1 %².
Among the 19 assets we track against ECF, RELL ranks #12 by 3-year correlation. The last year tells two different stories: RELL led by 62.7 percentage points, +22.9% for ECF against +85.6% for RELL. One caveat on sizing: RELL is 2.6 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.
ECF vs RELL: side by side
| ECF (Ellsworth Growth and Income Fund Ltd.) | RELL (Richardson Electronics, Ltd.) | |
|---|---|---|
| 1-year return | +22.9% | +85.6% |
| 5-year return | +25.8% | +131.1% |
| Volatility (ann.) | 16.5% | 42.1% |
| Beta vs S&P 500 | 0.71 | 0.78 |
| Max drawdown (3Y) | -16.8% | -45.1% |
| Market cap | $0.2B | $0.3B |
| P/E (trailing) | 3.9 | 40.0 |
| Dividend yield | 7.38% | 1.35% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ECF | RELL |
|---|---|---|
| 2022 | -31.6% | +60.3% |
| 2023 | +8.0% | -36.4% |
| 2024 | +27.5% | +7.4% |
| 2025 | +30.0% | -20.6% |
| 2026 | +10.6% | +67.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ECF and RELL good diversifiers for each other?
Reasonably. At 0.46, ECF and RELL keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between ECF and RELL?
The ECF/RELL correlation stands at 0.46 on a 3-year window (1 year: 0.57, 5 years: 0.38), computed from weekly returns as of 2026-08-27.
Is RELL a good diversifier for ECF?
Reasonably. At 0.46, ECF and RELL keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.46 mean?
A reading of 0.46 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/ecf-vs-rell.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ecf-vs-rell/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ECF correlations · RELL correlations
