NRIM vs THFF: Correlation
Measured on weekly returns over the past three years, Northrim BanCorp Inc (NRIM) and First Financial Corporation (THFF) carry a correlation of 0.80, a very strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NRIM and THFF?
On 3 years of weekly data the NRIM/THFF correlation comes out at 0.80, very strong, meaning they move nearly in lockstep. Recent behaviour matches the longer record: 0.71 over 1 year against 0.80 over 3. The 5-year figure is 0.72, and annualized covariance runs at 830.5 %².
In NRIM's tracked universe of 12 assets, THFF sits right near the top at #1. Their recent paths diverged sharply: over the last 12 months THFF outperformed by 27.3 percentage points (+11.5% for NRIM against +38.8% for THFF).
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.
NRIM vs THFF: side by side
| NRIM (Northrim BanCorp Inc) | THFF (First Financial Corporation) | |
|---|---|---|
| 1-year return | +11.5% | +38.8% |
| 5-year return | +203.9% | +135.2% |
| Volatility (ann.) | 36.9% | 28.2% |
| Beta vs S&P 500 | 0.89 | 0.81 |
| Max drawdown (3Y) | -24.9% | -20.2% |
| Market cap | $0.6B | $0.9B |
| P/E (trailing) | 8.4 | 11.1 |
| Dividend yield | 1.25% | 2.77% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | NRIM | THFF |
|---|---|---|
| 2022 | +30.7% | +4.4% |
| 2023 | +10.4% | -2.6% |
| 2024 | +41.9% | +11.1% |
| 2025 | +40.5% | +36.2% |
| 2026 | -1.8% | +35.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NRIM and THFF good diversifiers for each other?
No: a correlation of 0.80 means NRIM and THFF tend to fall together, which is precisely when diversification is supposed to help.
FAQ
What is the correlation between NRIM and THFF?
As of 2026-08-27, the correlation of weekly returns between NRIM and THFF is 0.80 over 3 years, 0.71 over 1 year and 0.72 over 5 years.
Is THFF a good diversifier for NRIM?
No: a correlation of 0.80 means NRIM and THFF tend to fall together, which is precisely when diversification is supposed to help.
What does a correlation of 0.80 mean?
On the −1 to +1 scale, 0.80 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/nrim-vs-thff.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/nrim-vs-thff/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: NRIM correlations · THFF correlations
