OPBK vs THFF: Correlation
Measured on weekly returns over the past three years, OP Bancorp (OPBK) and First Financial Corporation (THFF) carry a correlation of 0.71, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are OPBK and THFF?
On 3 years of weekly data the OPBK/THFF correlation comes out at 0.71, strong. Little has changed lately, as the 1-year reading of 0.74 lands near the 3-year figure. The 5-year figure is 0.65, and annualized covariance runs at 605.0 %².
Few assets follow OPBK as closely as THFF, which ranks #3 of 15 tracked partners. Their recent paths diverged sharply: over the last 12 months THFF outperformed by 28.2 percentage points (+10.6% for OPBK 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.
OPBK vs THFF: side by side
| OPBK (OP Bancorp) | THFF (First Financial Corporation) | |
|---|---|---|
| 1-year return | +10.6% | +38.8% |
| 5-year return | +86.0% | +135.2% |
| Volatility (ann.) | 30.2% | 28.2% |
| Beta vs S&P 500 | 0.65 | 0.81 |
| Max drawdown (3Y) | -41.8% | -20.2% |
| Market cap | $0.2B | $0.9B |
| P/E (trailing) | 7.7 | 11.1 |
| Dividend yield | 3.33% | 2.77% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | OPBK | THFF |
|---|---|---|
| 2022 | -9.3% | +4.4% |
| 2023 | +3.2% | -2.6% |
| 2024 | +50.5% | +11.1% |
| 2025 | -7.4% | +36.2% |
| 2026 | +10.4% | +35.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are OPBK and THFF good diversifiers for each other?
Only partially. A correlation of 0.71 means OPBK and THFF share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between OPBK and THFF?
The OPBK/THFF correlation stands at 0.71 on a 3-year window (1 year: 0.74, 5 years: 0.65), computed from weekly returns as of 2026-08-27.
Is THFF a good diversifier for OPBK?
Only partially. A correlation of 0.71 means OPBK and THFF share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.71 mean?
On the −1 to +1 scale, 0.71 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/opbk-vs-thff.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/opbk-vs-thff/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: OPBK correlations · THFF correlations
