BY vs THFF: Correlation
How closely do Byline Bancorp, Inc. (BY) and First Financial Corporation (THFF) trade together? Their weekly returns over three years give a correlation of 0.90, which is very strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BY and THFF?
Over the past 3 years, BY and THFF moved with a correlation of 0.90, which is very strong, meaning they move nearly in lockstep. The relationship has been stable: the 1-year correlation (0.94) sits close to the 3-year figure. Over 5 years the correlation is 0.85, and the annualized covariance of weekly returns is 679.4 %².
In BY's tracked universe of 70 assets, THFF sits right near the top at #2. Over the last 12 months THFF came out ahead by 6.3 percentage points (+32.5% against +38.8%).
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 THFF: side by side
| BY (Byline Bancorp, Inc.) | THFF (First Financial Corporation) | |
|---|---|---|
| 1-year return | +32.5% | +38.8% |
| 5-year return | +66.2% | +135.2% |
| Volatility (ann.) | 26.8% | 28.2% |
| Beta vs S&P 500 | 0.80 | 0.81 |
| Max drawdown (3Y) | -27.2% | -20.2% |
| Market cap | $1.7B | $0.9B |
| P/E (trailing) | 11.5 | 11.1 |
| Dividend yield | 1.15% | 2.77% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BY | THFF |
|---|---|---|
| 2022 | -14.7% | +4.4% |
| 2023 | +4.3% | -2.6% |
| 2024 | +25.0% | +11.1% |
| 2025 | +2.0% | +36.2% |
| 2026 | +32.7% | +35.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BY and THFF good diversifiers for each other?
Not really. At 0.90, the two trade almost as one position, and owning both buys little extra protection.
FAQ
What is the correlation between BY and THFF?
Using weekly returns as of 2026-08-27: 0.90 over 3 years, with 0.94 over the last year and 0.85 over 5 years.
Is THFF a good diversifier for BY?
Not really. At 0.90, the two trade almost as one position, and owning both buys little extra protection.
What does a correlation of 0.90 mean?
On the −1 to +1 scale, 0.90 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-thff.json
Markdown for the live badge, attribution link included:
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Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: BY correlations · THFF correlations
