FFIN vs SBSI: Correlation
Measured on weekly returns over the past three years, First Financial Bankshares, Inc. (FFIN) and Southside Bancshares, Inc. (SBSI) carry a correlation of 0.86, a very strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FFIN and SBSI?
Across a 3-year window, the weekly returns of FFIN and SBSI correlate at 0.86, very strong, meaning they move nearly in lockstep. The link has loosened recently: the 1-year correlation (0.75) runs below the 3-year figure (0.86). Stretching to 5 years gives 0.79, with an annualized covariance of 644.5 %².
Among the 20 assets we track against FFIN, SBSI ranks #4 by 3-year correlation. Correlation aside, the last 12 months split them widely, with SBSI ahead by 17.2 points (-10.8% versus +6.4%).
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 SBSI: side by side
| FFIN (First Financial Bankshares, Inc.) | SBSI (Southside Bancshares, Inc.) | |
|---|---|---|
| 1-year return | -10.8% | +6.4% |
| 5-year return | -22.9% | +7.0% |
| Volatility (ann.) | 30.5% | 24.6% |
| Beta vs S&P 500 | 0.84 | 0.59 |
| Max drawdown (3Y) | -31.4% | -27.3% |
| Market cap | $4.7B | $1.0B |
| P/E (trailing) | 18.0 | 12.6 |
| Dividend yield | 2.35% | 4.49% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FFIN | SBSI |
|---|---|---|
| 2022 | -31.2% | -10.8% |
| 2023 | -9.8% | -8.9% |
| 2024 | +21.6% | +6.3% |
| 2025 | -15.3% | +0.5% |
| 2026 | +12.2% | +8.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FFIN and SBSI good diversifiers for each other?
No: a correlation of 0.86 means FFIN and SBSI tend to fall together, which is precisely when diversification is supposed to help.
FAQ
What is the correlation between FFIN and SBSI?
The FFIN/SBSI correlation stands at 0.86 on a 3-year window (1 year: 0.75, 5 years: 0.79), computed from weekly returns as of 2026-08-27.
Is SBSI a good diversifier for FFIN?
No: a correlation of 0.86 means FFIN and SBSI tend to fall together, which is precisely when diversification is supposed to help.
What does a correlation of 0.86 mean?
On the −1 to +1 scale, 0.86 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/ffin-vs-sbsi.json
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Related comparisons
Hubs: FFIN correlations · SBSI correlations
