BY vs CASS: Correlation
Byline Bancorp, Inc. (BY) and Cass Information Systems, Inc (CASS) show a strong relationship: their 3-year correlation of weekly returns is 0.62.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BY and CASS?
Over the past 3 years, BY and CASS moved with a correlation of 0.62, which is strong. Recent behaviour matches the longer record: 0.71 over 1 year against 0.62 over 3. Over 5 years the correlation is 0.52, and the annualized covariance of weekly returns is 386.7 %².
By 3-year correlation, CASS places #57 of the 70 assets tracked against BY. Neither side won the trailing year by much: +32.5% against +36.1%.
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.
BY vs CASS: side by side
| BY (Byline Bancorp, Inc.) | CASS (Cass Information Systems, Inc) | |
|---|---|---|
| 1-year return | +32.5% | +36.1% |
| 5-year return | +66.2% | +45.6% |
| Volatility (ann.) | 26.8% | 23.2% |
| Beta vs S&P 500 | 0.80 | 0.66 |
| Max drawdown (3Y) | -27.2% | -20.5% |
| Market cap | $1.7B | $0.7B |
| P/E (trailing) | 11.5 | 20.7 |
| Dividend yield | 1.15% | 2.23% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BY | CASS |
|---|---|---|
| 2022 | -14.7% | +20.0% |
| 2023 | +4.3% | +1.1% |
| 2024 | +25.0% | -6.7% |
| 2025 | +2.0% | +4.5% |
| 2026 | +32.7% | +38.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BY and CASS good diversifiers for each other?
To a limited degree. At 0.62 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 BY and CASS?
The BY/CASS correlation stands at 0.62 on a 3-year window (1 year: 0.71, 5 years: 0.52), computed from weekly returns as of 2026-08-27.
Is CASS a good diversifier for BY?
To a limited degree. At 0.62 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 0.62 mean?
On the −1 to +1 scale, 0.62 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/by-vs-cass.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/by-vs-cass/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BY correlations · CASS correlations
