FFIN vs PB: Correlation
First Financial Bankshares, Inc. (FFIN) and Prosperity Bancshares, Inc. (PB) show a very strong relationship: their 3-year correlation of weekly returns is 0.84.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FFIN and PB?
Over the past 3 years, FFIN and PB moved with a correlation of 0.84, which is very strong, meaning they move nearly in lockstep. Recent behaviour matches the longer record: 0.80 over 1 year against 0.84 over 3. Over 5 years the correlation is 0.82, and the annualized covariance of weekly returns is 606.6 %².
Among the 20 assets we track against FFIN, PB ranks #8 by 3-year correlation. The last year tells two different stories: PB led by 18.9 percentage points, -10.8% for FFIN against +8.1% for PB.
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 PB: side by side
| FFIN (First Financial Bankshares, Inc.) | PB (Prosperity Bancshares, Inc.) | |
|---|---|---|
| 1-year return | -10.8% | +8.1% |
| 5-year return | -22.9% | +23.1% |
| Volatility (ann.) | 30.5% | 23.7% |
| Beta vs S&P 500 | 0.84 | 0.61 |
| Max drawdown (3Y) | -31.4% | -24.8% |
| Market cap | $4.7B | $8.7B |
| P/E (trailing) | 18.0 | 12.7 |
| Dividend yield | 2.35% | 3.26% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FFIN | PB |
|---|---|---|
| 2022 | -31.2% | +3.6% |
| 2023 | -9.8% | -3.3% |
| 2024 | +21.6% | +15.1% |
| 2025 | -15.3% | -5.1% |
| 2026 | +12.2% | +7.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FFIN and PB good diversifiers for each other?
Not really. At 0.84, the two trade almost as one position, and owning both buys little extra protection.
FAQ
What is the correlation between FFIN and PB?
Using weekly returns as of 2026-08-27: 0.84 over 3 years, with 0.80 over the last year and 0.82 over 5 years.
Is PB a good diversifier for FFIN?
Not really. At 0.84, the two trade almost as one position, and owning both buys little extra protection.
What does a correlation of 0.84 mean?
A reading of 0.84 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ffin-vs-pb.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/ffin-vs-pb/)
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Related comparisons
Hubs: FFIN correlations · PB correlations
