FIBK vs FULT: Correlation
First Interstate BancSystem, Inc. (FIBK) and Fulton Financial Corporation (FULT) show a very strong relationship: their 3-year correlation of weekly returns is 0.86.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FIBK and FULT?
Across a 3-year window, the weekly returns of FIBK and FULT correlate at 0.86, very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.83 lands near the 3-year figure. Stretching to 5 years gives 0.82, with an annualized covariance of 790.0 %².
By 3-year correlation, FULT places #5 of the 20 assets tracked against FIBK. Twelve-month performance is nearly a tie, at +21.9% for FIBK and +24.1% for FULT.
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.
FIBK vs FULT: side by side
| FIBK (First Interstate BancSystem, Inc.) | FULT (Fulton Financial Corporation) | |
|---|---|---|
| 1-year return | +21.9% | +24.1% |
| 5-year return | +13.8% | +85.0% |
| Volatility (ann.) | 30.3% | 30.3% |
| Beta vs S&P 500 | 0.98 | 1.03 |
| Max drawdown (3Y) | -31.8% | -29.9% |
| Market cap | $3.6B | $4.5B |
| P/E (trailing) | 11.5 | 11.4 |
| Dividend yield | 5.05% | 3.15% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FIBK | FULT |
|---|---|---|
| 2022 | -0.8% | +3.1% |
| 2023 | -14.8% | +2.5% |
| 2024 | +12.9% | +21.9% |
| 2025 | +13.5% | +4.3% |
| 2026 | +11.8% | +25.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FIBK and FULT good diversifiers for each other?
No. With a correlation of 0.86, FIBK and FULT move nearly in lockstep, so holding both adds very little diversification.
FAQ
What is the correlation between FIBK and FULT?
Using weekly returns as of 2026-08-27: 0.86 over 3 years, with 0.83 over the last year and 0.82 over 5 years.
Is FULT a good diversifier for FIBK?
No. With a correlation of 0.86, FIBK and FULT 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/fibk-vs-fult.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/fibk-vs-fult/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: FIBK correlations · FULT correlations
