BFST vs THFF: Correlation
How closely do Business First Bancshares, Inc. (BFST) and First Financial Corporation (THFF) trade together? Their weekly returns over three years give a correlation of 0.87, which is very strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BFST and THFF?
Across a 3-year window, the weekly returns of BFST and THFF correlate at 0.87, very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.88 lands near the 3-year figure. Stretching to 5 years gives 0.77, with an annualized covariance of 729.6 %².
Few assets follow BFST as closely as THFF, which ranks #2 of 19 tracked partners. The trailing year gives THFF the advantage: +25.6% versus +38.8%, a 13.2-point spread.
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.
BFST vs THFF: side by side
| BFST (Business First Bancshares, Inc.) | THFF (First Financial Corporation) | |
|---|---|---|
| 1-year return | +25.6% | +38.8% |
| 5-year return | +47.5% | +135.2% |
| Volatility (ann.) | 29.7% | 28.2% |
| Beta vs S&P 500 | 0.82 | 0.81 |
| Max drawdown (3Y) | -27.3% | -20.2% |
| Market cap | $1.0B | $0.9B |
| P/E (trailing) | 11.1 | 11.1 |
| Dividend yield | 1.93% | 2.77% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BFST | THFF |
|---|---|---|
| 2022 | -20.2% | +4.4% |
| 2023 | +14.4% | -2.6% |
| 2024 | +6.9% | +11.1% |
| 2025 | +4.0% | +36.2% |
| 2026 | +21.3% | +35.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BFST and THFF good diversifiers for each other?
No. With a correlation of 0.87, BFST and THFF move nearly in lockstep, so holding both adds very little diversification.
FAQ
What is the correlation between BFST and THFF?
As of 2026-08-27, the correlation of weekly returns between BFST and THFF is 0.87 over 3 years, 0.88 over 1 year and 0.77 over 5 years.
Is THFF a good diversifier for BFST?
No. With a correlation of 0.87, BFST and THFF move nearly in lockstep, so holding both adds very little diversification.
What does a correlation of 0.87 mean?
On the −1 to +1 scale, 0.87 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/bfst-vs-thff.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/bfst-vs-thff/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: BFST correlations · THFF correlations
