EFOI vs MYSE: Correlation
Measured on weekly returns over the past three years, Energy Focus, Inc. (EFOI) and Myseum.AI, Inc. (MYSE) carry a correlation of 0.54, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EFOI and MYSE?
Over the past 3 years, EFOI and MYSE moved with a correlation of 0.54, which is moderate. The link has tightened recently: the 1-year correlation (0.88) runs above the 3-year figure (0.54). Over 5 years the correlation is 0.44, and the annualized covariance of weekly returns is 14599.4 %².
MYSE is one of the assets that tracks EFOI most closely: it ranks #3 out of the 17 assets we track against EFOI. Correlation aside, the last 12 months split them widely, with MYSE ahead by 18.8 points (+13.2% versus +32.0%).
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 MYSE: side by side
| EFOI (Energy Focus, Inc.) | MYSE (Myseum.AI, Inc.) | |
|---|---|---|
| 1-year return | +13.2% | +32.0% |
| 5-year return | -87.5% | -96.4% |
| Volatility (ann.) | 158.7% | 170.4% |
| Beta vs S&P 500 | 1.96 | 1.47 |
| Max drawdown (3Y) | -58.2% | -85.1% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | EFOI | MYSE |
|---|---|---|
| 2022 | -92.5% | -91.8% |
| 2023 | -32.6% | +16.2% |
| 2024 | -21.2% | -38.0% |
| 2025 | +94.1% | -3.9% |
| 2026 | +25.5% | +56.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EFOI and MYSE good diversifiers for each other?
To a limited degree. At 0.54 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between EFOI and MYSE?
Using weekly returns as of 2026-08-27: 0.54 over 3 years, with 0.88 over the last year and 0.44 over 5 years.
Is MYSE a good diversifier for EFOI?
To a limited degree. At 0.54 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.54 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-myse.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/efoi-vs-myse/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: EFOI correlations · MYSE correlations
