BANR vs IBOC: Correlation
How closely do Banner Corporation (BANR) and International Bancshares Corporation (IBOC) trade together? Their weekly returns over three years give a correlation of 0.86, which is very strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BANR and IBOC?
On 3 years of weekly data the BANR/IBOC correlation comes out at 0.86, very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.77 lands near the 3-year figure. The 5-year figure is 0.81, and annualized covariance runs at 666.4 %².
Within BANR's tracked universe of 18 assets, IBOC comes in at #4 by 3-year correlation. The trailing year gives BANR the advantage: +7.1% versus -0.9%, a 8.0-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.
BANR vs IBOC: side by side
| BANR (Banner Corporation) | IBOC (International Bancshares Corporation) | |
|---|---|---|
| 1-year return | +7.1% | -0.9% |
| 5-year return | +46.1% | +91.3% |
| Volatility (ann.) | 28.8% | 26.9% |
| Beta vs S&P 500 | 0.80 | 0.77 |
| Max drawdown (3Y) | -25.4% | -24.1% |
| Market cap | $2.4B | $4.4B |
| P/E (trailing) | 11.6 | 10.7 |
| Dividend yield | 2.84% | 2.02% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BANR | IBOC |
|---|---|---|
| 2022 | +7.2% | +10.9% |
| 2023 | -11.9% | +22.0% |
| 2024 | +29.5% | +19.1% |
| 2025 | -3.2% | +7.4% |
| 2026 | +14.6% | +8.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BANR and IBOC good diversifiers for each other?
No. With a correlation of 0.86, BANR and IBOC move nearly in lockstep, so holding both adds very little diversification.
FAQ
What is the correlation between BANR and IBOC?
The BANR/IBOC correlation stands at 0.86 on a 3-year window (1 year: 0.77, 5 years: 0.81), computed from weekly returns as of 2026-08-27.
Is IBOC a good diversifier for BANR?
No. With a correlation of 0.86, BANR and IBOC move nearly in lockstep, so holding both adds very little diversification.
What does a correlation of 0.86 mean?
A reading of 0.86 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/banr-vs-iboc.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/banr-vs-iboc/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BANR correlations · IBOC correlations
