BRBS vs NBBK: Correlation
How closely do Blue Ridge Bankshares, Inc. (BRBS) and NB Bancorp, Inc. (NBBK) trade together? Their weekly returns over three years give a correlation of 0.37, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BRBS and NBBK?
Over the past 3 years, BRBS and NBBK moved with a correlation of 0.37, which is moderate. The link has loosened recently: the 1-year correlation (0.26) runs below the 3-year figure (0.37). Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is 326.8 %².
NBBK is one of the assets that tracks BRBS most closely: it ranks #2 out of the 11 assets we track against BRBS. Their 12-month results are close: +20.9% for BRBS against +19.3% for NBBK. Risk is not evenly split, since BRBS carries 1.7 times the volatility of the other side.
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.
BRBS vs NBBK: side by side
| BRBS (Blue Ridge Bankshares, Inc.) | NBBK (NB Bancorp, Inc.) | |
|---|---|---|
| 1-year return | +20.9% | +19.3% |
| 5-year return | -70.4% | n/a |
| Volatility (ann.) | 47.8% | 27.6% |
| Beta vs S&P 500 | 0.73 | 0.84 |
| Max drawdown (3Y) | -74.3% | -24.7% |
| Market cap | $0.3B | $1.0B |
| P/E (trailing) | 43.3 | 14.7 |
| Dividend yield | 0.00% | 4.39% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BRBS | NBBK |
|---|---|---|
| 2022 | -27.9% | – |
| 2023 | -75.2% | – |
| 2024 | +6.3% | +34.3% |
| 2025 | +40.1% | +10.6% |
| 2026 | +6.6% | +13.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BRBS and NBBK good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.37 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between BRBS and NBBK?
As of 2026-08-27, the correlation of weekly returns between BRBS and NBBK is 0.37 over 3 years, 0.26 over 1 year and n/a over 5 years.
Is NBBK a good diversifier for BRBS?
Yes, to a useful degree: a correlation of 0.37 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.37 mean?
On the −1 to +1 scale, 0.37 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/brbs-vs-nbbk.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/brbs-vs-nbbk/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BRBS correlations · NBBK correlations
