STBA vs TRST: Correlation
How closely do S&T Bancorp, Inc. (STBA) and TrustCo Bank Corp NY (TRST) trade together? Their weekly returns over three years give a correlation of 0.87, which is very strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are STBA and TRST?
Over the past 3 years, STBA and TRST moved with a correlation of 0.87, which is very strong, meaning they move nearly in lockstep. Little has changed lately, as the 1-year reading of 0.82 lands near the 3-year figure. Over 5 years the correlation is 0.81, and the annualized covariance of weekly returns is 652.9 %².
By 3-year correlation, TRST places #7 of the 25 assets tracked against STBA. Correlation aside, the last 12 months split them widely, with TRST ahead by 21.9 points (+29.0% versus +50.9%).
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.
STBA vs TRST: side by side
| STBA (S&T Bancorp, Inc.) | TRST (TrustCo Bank Corp NY) | |
|---|---|---|
| 1-year return | +29.0% | +50.9% |
| 5-year return | +102.2% | +121.0% |
| Volatility (ann.) | 28.7% | 26.2% |
| Beta vs S&P 500 | 0.68 | 0.68 |
| Max drawdown (3Y) | -26.1% | -26.2% |
| Market cap | $1.8B | $1.0B |
| P/E (trailing) | 13.3 | 15.9 |
| Dividend yield | 1.44% | 2.66% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | STBA | TRST |
|---|---|---|
| 2022 | +12.6% | +17.6% |
| 2023 | +2.1% | -13.3% |
| 2024 | +18.7% | +12.4% |
| 2025 | +6.7% | +29.3% |
| 2026 | +29.7% | +41.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are STBA and TRST good diversifiers for each other?
No: a correlation of 0.87 means STBA and TRST tend to fall together, which is precisely when diversification is supposed to help.
FAQ
What is the correlation between STBA and TRST?
As of 2026-08-27, the correlation of weekly returns between STBA and TRST is 0.87 over 3 years, 0.82 over 1 year and 0.81 over 5 years.
Is TRST a good diversifier for STBA?
No: a correlation of 0.87 means STBA and TRST tend to fall together, which is precisely when diversification is supposed to help.
What does a correlation of 0.87 mean?
A reading of 0.87 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/stba-vs-trst.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/stba-vs-trst/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: STBA correlations · TRST correlations
