FNB vs PB: Correlation
How closely do F.N.B. Corporation (FNB) and Prosperity Bancshares, Inc. (PB) trade together? Their weekly returns over three years give a correlation of 0.84, which is very strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FNB and PB?
Across a 3-year window, the weekly returns of FNB and PB correlate at 0.84, very strong, meaning they move nearly in lockstep. Recent behaviour matches the longer record: 0.80 over 1 year against 0.84 over 3. Stretching to 5 years gives 0.82, with an annualized covariance of 545.7 %².
By 3-year correlation, PB places #27 of the 53 assets tracked against FNB. On 12-month performance FNB holds a 5.3-point edge, +13.4% against +8.1%.
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.
FNB vs PB: side by side
| FNB (F.N.B. Corporation) | PB (Prosperity Bancshares, Inc.) | |
|---|---|---|
| 1-year return | +13.4% | +8.1% |
| 5-year return | +91.1% | +23.1% |
| Volatility (ann.) | 27.4% | 23.7% |
| Beta vs S&P 500 | 1.03 | 0.61 |
| Max drawdown (3Y) | -32.6% | -24.8% |
| Market cap | $6.6B | $8.7B |
| P/E (trailing) | 11.0 | 12.7 |
| Dividend yield | 2.65% | 3.26% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FNB | PB |
|---|---|---|
| 2022 | +11.7% | +3.6% |
| 2023 | +9.8% | -3.3% |
| 2024 | +11.0% | +15.1% |
| 2025 | +19.4% | -5.1% |
| 2026 | +9.7% | +7.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FNB and PB good diversifiers for each other?
No: a correlation of 0.84 means FNB and PB tend to fall together, which is precisely when diversification is supposed to help.
FAQ
What is the correlation between FNB and PB?
As of 2026-08-27, the correlation of weekly returns between FNB and PB is 0.84 over 3 years, 0.80 over 1 year and 0.82 over 5 years.
Is PB a good diversifier for FNB?
No: a correlation of 0.84 means FNB and PB tend to fall together, which is precisely when diversification is supposed to help.
What does a correlation of 0.84 mean?
On the −1 to +1 scale, 0.84 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/fnb-vs-pb.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/fnb-vs-pb/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: FNB correlations · PB correlations
