BOKF vs TRMK: Correlation
How closely do BOK Financial Corporation (BOKF) and Trustmark Corporation (TRMK) 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 BOKF and TRMK?
Over the past 3 years, BOKF and TRMK moved with a correlation of 0.84, which is very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.74 lands near the 3-year figure. Over 5 years the correlation is 0.77, and the annualized covariance of weekly returns is 590.3 %².
Within BOKF's tracked universe of 15 assets, TRMK comes in at #5 by 3-year correlation. The trailing year gives BOKF the advantage: +25.5% versus +16.5%, a 9.0-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.
BOKF vs TRMK: side by side
| BOKF (BOK Financial Corporation) | TRMK (Trustmark Corporation) | |
|---|---|---|
| 1-year return | +25.5% | +16.5% |
| 5-year return | +78.9% | +69.7% |
| Volatility (ann.) | 25.9% | 27.0% |
| Beta vs S&P 500 | 0.86 | 0.91 |
| Max drawdown (3Y) | -26.2% | -22.0% |
| Market cap | $8.4B | $2.7B |
| P/E (trailing) | 13.0 | 11.8 |
| Dividend yield | 1.82% | 2.12% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BOKF | TRMK |
|---|---|---|
| 2022 | +1.2% | +10.7% |
| 2023 | -15.2% | -17.0% |
| 2024 | +27.2% | +30.6% |
| 2025 | +13.8% | +13.0% |
| 2026 | +18.4% | +20.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BOKF and TRMK good diversifiers for each other?
No: a correlation of 0.84 means BOKF and TRMK tend to fall together, which is precisely when diversification is supposed to help.
FAQ
What is the correlation between BOKF and TRMK?
The BOKF/TRMK correlation stands at 0.84 on a 3-year window (1 year: 0.74, 5 years: 0.77), computed from weekly returns as of 2026-08-27.
Is TRMK a good diversifier for BOKF?
No: a correlation of 0.84 means BOKF and TRMK tend to fall together, which is precisely when diversification is supposed to help.
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.
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Hubs: BOKF correlations · TRMK correlations
