BY vs TFSL: Correlation
Measured on weekly returns over the past three years, Byline Bancorp, Inc. (BY) and TFS Financial Corporation (TFSL) carry a correlation of 0.77, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BY and TFSL?
Across a 3-year window, the weekly returns of BY and TFSL correlate at 0.77, strong. Little has changed lately, as the 1-year reading of 0.68 lands near the 3-year figure. Stretching to 5 years gives 0.72, with an annualized covariance of 474.7 %².
By 3-year correlation, TFSL places #43 of the 70 assets tracked against BY. Neither side won the trailing year by much: +32.5% against +36.2%.
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 TFSL: side by side
| BY (Byline Bancorp, Inc.) | TFSL (TFS Financial Corporation) | |
|---|---|---|
| 1-year return | +32.5% | +36.2% |
| 5-year return | +66.2% | +35.4% |
| Volatility (ann.) | 26.8% | 23.1% |
| Beta vs S&P 500 | 0.80 | 0.49 |
| Max drawdown (3Y) | -27.2% | -21.3% |
| Market cap | $1.7B | $5.0B |
| P/E (trailing) | 11.5 | 49.7 |
| Dividend yield | 1.15% | 6.31% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BY | TFSL |
|---|---|---|
| 2022 | -14.7% | -13.0% |
| 2023 | +4.3% | +11.2% |
| 2024 | +25.0% | -6.7% |
| 2025 | +2.0% | +16.0% |
| 2026 | +32.7% | +39.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BY and TFSL good diversifiers for each other?
Somewhat, no more. With 0.77 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between BY and TFSL?
Using weekly returns as of 2026-08-27: 0.77 over 3 years, with 0.68 over the last year and 0.72 over 5 years.
Is TFSL a good diversifier for BY?
Somewhat, no more. With 0.77 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.77 mean?
A reading of 0.77 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-tfsl.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/by-vs-tfsl/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BY correlations · TFSL correlations
