FFIN vs SFBS: Correlation
First Financial Bankshares, Inc. (FFIN) and ServisFirst Bancshares, Inc. (SFBS) show a very strong relationship: their 3-year correlation of weekly returns is 0.86.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FFIN and SFBS?
Across a 3-year window, the weekly returns of FFIN and SFBS correlate at 0.86, very strong, meaning they move nearly in lockstep. The relationship has been stable: the 1-year correlation (0.79) sits close to the 3-year figure. Stretching to 5 years gives 0.77, with an annualized covariance of 895.6 %².
Among the 20 assets we track against FFIN, SFBS ranks #5 by 3-year correlation. Over the last 12 months SFBS came out ahead by 10.0 percentage points (-10.8% against -0.8%).
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.
FFIN vs SFBS: side by side
| FFIN (First Financial Bankshares, Inc.) | SFBS (ServisFirst Bancshares, Inc.) | |
|---|---|---|
| 1-year return | -10.8% | -0.8% |
| 5-year return | -22.9% | +29.4% |
| Volatility (ann.) | 30.5% | 34.1% |
| Beta vs S&P 500 | 0.84 | 0.96 |
| Max drawdown (3Y) | -31.4% | -30.4% |
| Market cap | $4.7B | $4.7B |
| P/E (trailing) | 18.0 | 14.7 |
| Dividend yield | 2.35% | 1.70% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FFIN | SFBS |
|---|---|---|
| 2022 | -31.2% | -17.9% |
| 2023 | -9.8% | -1.2% |
| 2024 | +21.6% | +28.8% |
| 2025 | -15.3% | -13.9% |
| 2026 | +12.2% | +22.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FFIN and SFBS good diversifiers for each other?
No. With a correlation of 0.86, FFIN and SFBS move nearly in lockstep, so holding both adds very little diversification.
FAQ
What is the correlation between FFIN and SFBS?
The FFIN/SFBS correlation stands at 0.86 on a 3-year window (1 year: 0.79, 5 years: 0.77), computed from weekly returns as of 2026-08-27.
Is SFBS a good diversifier for FFIN?
No. With a correlation of 0.86, FFIN and SFBS move nearly in lockstep, so holding both adds very little diversification.
What does a correlation of 0.86 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/ffin-vs-sfbs.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ffin-vs-sfbs/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: FFIN correlations · SFBS correlations
