CATY vs FIBK: Correlation
Measured on weekly returns over the past three years, Cathay General Bancorp (CATY) and First Interstate BancSystem, Inc. (FIBK) carry a correlation of 0.86, a very strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CATY and FIBK?
On 3 years of weekly data the CATY/FIBK correlation comes out at 0.86, very strong, meaning they move nearly in lockstep. The relationship has been stable: the 1-year correlation (0.83) sits close to the 3-year figure. The 5-year figure is 0.82, and annualized covariance runs at 700.1 %².
Among the 28 assets we track against CATY, FIBK ranks #9 by 3-year correlation. Neither side won the trailing year by much: +26.7% against +21.9%.
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.
CATY vs FIBK: side by side
| CATY (Cathay General Bancorp) | FIBK (First Interstate BancSystem, Inc.) | |
|---|---|---|
| 1-year return | +26.7% | +21.9% |
| 5-year return | +83.2% | +13.8% |
| Volatility (ann.) | 26.8% | 30.3% |
| Beta vs S&P 500 | 0.82 | 0.98 |
| Max drawdown (3Y) | -29.7% | -31.8% |
| Market cap | $4.1B | $3.6B |
| P/E (trailing) | 12.1 | 11.5 |
| Dividend yield | 2.39% | 5.05% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CATY | FIBK |
|---|---|---|
| 2022 | -2.1% | -0.8% |
| 2023 | +13.5% | -14.8% |
| 2024 | +10.3% | +12.9% |
| 2025 | +4.6% | +13.5% |
| 2026 | +30.2% | +11.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CATY and FIBK good diversifiers for each other?
No. With a correlation of 0.86, CATY and FIBK move nearly in lockstep, so holding both adds very little diversification.
FAQ
What is the correlation between CATY and FIBK?
As of 2026-08-27, the correlation of weekly returns between CATY and FIBK is 0.86 over 3 years, 0.83 over 1 year and 0.82 over 5 years.
Is FIBK a good diversifier for CATY?
No. With a correlation of 0.86, CATY and FIBK move nearly in lockstep, so holding both adds very little diversification.
What does a correlation of 0.86 mean?
On the −1 to +1 scale, 0.86 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/caty-vs-fibk.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/caty-vs-fibk/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: CATY correlations · FIBK correlations
