BY vs WSBF: Correlation
Measured on weekly returns over the past three years, Byline Bancorp, Inc. (BY) and Waterstone Financial, Inc. (WSBF) carry a correlation of 0.75, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BY and WSBF?
On 3 years of weekly data the BY/WSBF correlation comes out at 0.75, strong. Little has changed lately, as the 1-year reading of 0.67 lands near the 3-year figure. The 5-year figure is 0.65, and annualized covariance runs at 524.0 %².
By 3-year correlation, WSBF places #46 of the 70 assets tracked against BY. Correlation aside, the last 12 months split them widely, with WSBF ahead by 17.4 points (+32.5% versus +49.9%).
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.
BY vs WSBF: side by side
| BY (Byline Bancorp, Inc.) | WSBF (Waterstone Financial, Inc.) | |
|---|---|---|
| 1-year return | +32.5% | +49.9% |
| 5-year return | +66.2% | +33.3% |
| Volatility (ann.) | 26.8% | 26.2% |
| Beta vs S&P 500 | 0.80 | 0.61 |
| Max drawdown (3Y) | -27.2% | -26.5% |
| Market cap | $1.7B | $0.4B |
| P/E (trailing) | 11.5 | 12.1 |
| Dividend yield | 1.15% | 3.05% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BY | WSBF |
|---|---|---|
| 2022 | -14.7% | -15.8% |
| 2023 | +4.3% | -13.1% |
| 2024 | +25.0% | -0.9% |
| 2025 | +2.0% | +28.8% |
| 2026 | +32.7% | +30.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BY and WSBF good diversifiers for each other?
Only partially. A correlation of 0.75 means BY and WSBF share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between BY and WSBF?
The BY/WSBF correlation stands at 0.75 on a 3-year window (1 year: 0.67, 5 years: 0.65), computed from weekly returns as of 2026-08-27.
Is WSBF a good diversifier for BY?
Only partially. A correlation of 0.75 means BY and WSBF share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.75 mean?
A reading of 0.75 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/by-vs-wsbf.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/by-vs-wsbf/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BY correlations · WSBF correlations
