CORZ vs ECF: Correlation
Core Scientific, Inc. (CORZ) and Ellsworth Growth and Income Fund Ltd. (ECF) show a moderate relationship: their 3-year correlation of weekly returns is 0.55.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CORZ and ECF?
On 3 years of weekly data the CORZ/ECF correlation comes out at 0.55, moderate. The link has tightened recently: the 1-year correlation (0.76) runs above the 3-year figure (0.55). The 5-year figure is n/a, and annualized covariance runs at 799.7 %².
In CORZ's tracked universe of 19 assets, ECF sits right near the top at #3. Neither side won the trailing year by much: +24.1% against +22.9%. Note the risk asymmetry: CORZ runs 5.4 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
CORZ vs ECF: side by side
| CORZ (Core Scientific, Inc.) | ECF (Ellsworth Growth and Income Fund Ltd.) | |
|---|---|---|
| 1-year return | +24.1% | +22.9% |
| 5-year return | n/a | +25.8% |
| Volatility (ann.) | 89.6% | 16.5% |
| Beta vs S&P 500 | 2.71 | 0.71 |
| Max drawdown (3Y) | -64.9% | -16.8% |
| Market cap | $5.7B | $0.2B |
| P/E (trailing) | – | 3.9 |
| Dividend yield | 0.00% | 7.38% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CORZ | ECF |
|---|---|---|
| 2022 | – | -31.6% |
| 2023 | – | +8.0% |
| 2024 | – | +27.5% |
| 2025 | +3.6% | +30.0% |
| 2026 | +21.0% | +10.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CORZ and ECF good diversifiers for each other?
Only partially. A correlation of 0.55 means CORZ and ECF share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between CORZ and ECF?
Using weekly returns as of 2026-08-27: 0.55 over 3 years, with 0.76 over the last year and n/a over 5 years.
Is ECF a good diversifier for CORZ?
Only partially. A correlation of 0.55 means CORZ and ECF share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.55 mean?
On the −1 to +1 scale, 0.55 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/corz-vs-ecf.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/corz-vs-ecf/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CORZ correlations · ECF correlations
