EFSI vs NBN: Correlation
How closely do Eagle Financial Services Inc (EFSI) and Northeast Bank (NBN) trade together? Their weekly returns over three years give a correlation of 0.40, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are EFSI and NBN?
Over the past 3 years, EFSI and NBN moved with a correlation of 0.40, which is moderate. The link has tightened recently: the 1-year correlation (0.59) runs above the 3-year figure (0.40). Over 5 years the correlation is 0.34, and the annualized covariance of weekly returns is 273.0 %².
By 3-year correlation, NBN places #5 of the 11 assets tracked against EFSI. Neither side won the trailing year by much: +17.6% against +17.7%. Note the risk asymmetry: NBN runs 1.7 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.
EFSI vs NBN: side by side
| EFSI (Eagle Financial Services Inc) | NBN (Northeast Bank) | |
|---|---|---|
| 1-year return | +17.6% | +17.7% |
| 5-year return | +46.3% | +303.8% |
| Volatility (ann.) | 20.3% | 33.6% |
| Beta vs S&P 500 | 0.30 | 0.81 |
| Max drawdown (3Y) | -21.2% | -27.6% |
| Market cap | $0.2B | – |
| P/E (trailing) | 11.8 | 10.2 |
| Dividend yield | 2.97% | 0.03% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | EFSI | NBN |
|---|---|---|
| 2022 | +8.0% | +17.9% |
| 2023 | -13.4% | +31.2% |
| 2024 | +26.2% | +66.3% |
| 2025 | +13.4% | +13.3% |
| 2026 | +7.1% | +25.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are EFSI and NBN good diversifiers for each other?
A fair diversifier. At 0.40, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between EFSI and NBN?
The EFSI/NBN correlation stands at 0.40 on a 3-year window (1 year: 0.59, 5 years: 0.34), computed from weekly returns as of 2026-08-27.
Is NBN a good diversifier for EFSI?
A fair diversifier. At 0.40, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.40 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/efsi-vs-nbn.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/efsi-vs-nbn/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: EFSI correlations · NBN correlations
