BOKF vs SGI: Correlation
BOK Financial Corporation (BOKF) and Somnigroup International Inc. (SGI) show a strong relationship: their 3-year correlation of weekly returns is 0.63.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BOKF and SGI?
On 3 years of weekly data the BOKF/SGI correlation comes out at 0.63, strong. Recent behaviour matches the longer record: 0.57 over 1 year against 0.63 over 3. The 5-year figure is 0.53, and annualized covariance runs at 552.2 %².
By 3-year correlation, SGI places #7 of the 15 assets tracked against BOKF. The last year tells two different stories: BOKF led by 50.9 percentage points, +25.5% for BOKF against -25.4% for SGI.
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 SGI: side by side
| BOKF (BOK Financial Corporation) | SGI (Somnigroup International Inc.) | |
|---|---|---|
| 1-year return | +25.5% | -25.4% |
| 5-year return | +78.9% | +44.9% |
| Volatility (ann.) | 25.9% | 33.8% |
| Beta vs S&P 500 | 0.86 | 1.02 |
| Max drawdown (3Y) | -26.2% | -37.1% |
| Market cap | $8.4B | $13.1B |
| P/E (trailing) | 13.0 | 24.8 |
| Dividend yield | 1.82% | 1.02% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BOKF | SGI |
|---|---|---|
| 2022 | +1.2% | -26.0% |
| 2023 | -15.2% | +50.1% |
| 2024 | +27.2% | +12.3% |
| 2025 | +13.8% | +58.8% |
| 2026 | +18.4% | -29.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BOKF and SGI good diversifiers for each other?
To a limited degree. At 0.63 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between BOKF and SGI?
The BOKF/SGI correlation stands at 0.63 on a 3-year window (1 year: 0.57, 5 years: 0.53), computed from weekly returns as of 2026-08-27.
Is SGI a good diversifier for BOKF?
To a limited degree. At 0.63 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.63 mean?
On the −1 to +1 scale, 0.63 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/bokf-vs-sgi.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/bokf-vs-sgi/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: BOKF correlations · SGI correlations
