BFST vs BY: Correlation
Business First Bancshares, Inc. (BFST) and Byline Bancorp, Inc. (BY) 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 BFST and BY?
Over the past 3 years, BFST and BY moved with a correlation of 0.86, which is very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.90 lands near the 3-year figure. Over 5 years the correlation is 0.78, and the annualized covariance of weekly returns is 682.6 %².
BY is one of the assets that tracks BFST most closely: it ranks #3 out of the 19 assets we track against BFST. On 12-month performance BY holds a 6.9-point edge, +25.6% against +32.5%.
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.
BFST vs BY: side by side
| BFST (Business First Bancshares, Inc.) | BY (Byline Bancorp, Inc.) | |
|---|---|---|
| 1-year return | +25.6% | +32.5% |
| 5-year return | +47.5% | +66.2% |
| Volatility (ann.) | 29.7% | 26.8% |
| Beta vs S&P 500 | 0.82 | 0.80 |
| Max drawdown (3Y) | -27.3% | -27.2% |
| Market cap | $1.0B | $1.7B |
| P/E (trailing) | 11.1 | 11.5 |
| Dividend yield | 1.93% | 1.15% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BFST | BY |
|---|---|---|
| 2022 | -20.2% | -14.7% |
| 2023 | +14.4% | +4.3% |
| 2024 | +6.9% | +25.0% |
| 2025 | +4.0% | +2.0% |
| 2026 | +21.3% | +32.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BFST and BY good diversifiers for each other?
Not really. At 0.86, the two trade almost as one position, and owning both buys little extra protection.
FAQ
What is the correlation between BFST and BY?
Using weekly returns as of 2026-08-27: 0.86 over 3 years, with 0.90 over the last year and 0.78 over 5 years.
Is BY a good diversifier for BFST?
Not really. At 0.86, the two trade almost as one position, and owning both buys little extra protection.
What does a correlation of 0.86 mean?
A reading of 0.86 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
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Related comparisons
Hubs: BFST correlations · BY correlations
