EFOI vs SENEA: Correlation
Measured on weekly returns over the past three years, Energy Focus, Inc. (EFOI) and Seneca Foods Corp. (SENEA) carry a correlation of -0.23, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EFOI and SENEA?
Over the past 3 years, EFOI and SENEA moved with a correlation of -0.23, which is negative, meaning they tend to move in opposite directions. Lately the two have drifted apart, with the 1-year correlation at -0.41 versus -0.23 over 3 years. Over 5 years the correlation is -0.11, and the annualized covariance of weekly returns is -1223.0 %².
SENEA is close to the least connected end of EFOI's tracked universe, ranking #13 of 17. Their recent paths diverged sharply: over the last 12 months SENEA outperformed by 60.1 percentage points (+13.2% for EFOI against +73.3% for SENEA). One caveat on sizing: EFOI is 4.8 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.
EFOI vs SENEA: side by side
| EFOI (Energy Focus, Inc.) | SENEA (Seneca Foods Corp.) | |
|---|---|---|
| 1-year return | +13.2% | +73.3% |
| 5-year return | -87.5% | +294.2% |
| Volatility (ann.) | 158.7% | 33.3% |
| Beta vs S&P 500 | 1.96 | 0.07 |
| Max drawdown (3Y) | -58.2% | -22.8% |
| Market cap | – | $1.3B |
| P/E (trailing) | – | 11.1 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | EFOI | SENEA |
|---|---|---|
| 2022 | -92.5% | +27.1% |
| 2023 | -32.6% | -14.0% |
| 2024 | -21.2% | +51.1% |
| 2025 | +94.1% | +39.6% |
| 2026 | +25.5% | +73.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EFOI and SENEA good diversifiers for each other?
By historical standards, yes. A correlation of -0.23 means the two rarely move for the same reasons.
FAQ
What is the correlation between EFOI and SENEA?
The EFOI/SENEA correlation stands at -0.23 on a 3-year window (1 year: -0.41, 5 years: -0.11), computed from weekly returns as of 2026-08-27.
Is SENEA a good diversifier for EFOI?
By historical standards, yes. A correlation of -0.23 means the two rarely move for the same reasons.
What does a correlation of -0.23 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/efoi-vs-senea.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/efoi-vs-senea/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: EFOI correlations · SENEA correlations
