OTTR vs STBA: Correlation
Otter Tail Corporation (OTTR) and S&T Bancorp, Inc. (STBA) show a moderate relationship: their 3-year correlation of weekly returns is 0.51.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are OTTR and STBA?
Over the past 3 years, OTTR and STBA moved with a correlation of 0.51, which is moderate. Lately the two have drifted apart, with the 1-year correlation at 0.36 versus 0.51 over 3 years. Over 5 years the correlation is 0.38, and the annualized covariance of weekly returns is 391.8 %².
Within OTTR's tracked universe of 10 assets, STBA comes in at #5 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months STBA outperformed by 18.3 percentage points (+10.7% for OTTR against +29.0% for STBA).
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.
OTTR vs STBA: side by side
| OTTR (Otter Tail Corporation) | STBA (S&T Bancorp, Inc.) | |
|---|---|---|
| 1-year return | +10.7% | +29.0% |
| 5-year return | +88.2% | +102.2% |
| Volatility (ann.) | 26.7% | 28.7% |
| Beta vs S&P 500 | 0.57 | 0.68 |
| Max drawdown (3Y) | -27.1% | -26.1% |
| Market cap | $3.8B | $1.8B |
| P/E (trailing) | 19.9 | 13.3 |
| Dividend yield | 2.39% | 1.44% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | OTTR | STBA |
|---|---|---|
| 2022 | -15.6% | +12.6% |
| 2023 | +48.1% | +2.1% |
| 2024 | -11.2% | +18.7% |
| 2025 | +12.3% | +6.7% |
| 2026 | +15.7% | +29.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are OTTR and STBA good diversifiers for each other?
Only partially. A correlation of 0.51 means OTTR and STBA 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 OTTR and STBA?
As of 2026-08-27, the correlation of weekly returns between OTTR and STBA is 0.51 over 3 years, 0.36 over 1 year and 0.38 over 5 years.
Is STBA a good diversifier for OTTR?
Only partially. A correlation of 0.51 means OTTR and STBA share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.51 mean?
A reading of 0.51 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/ottr-vs-stba.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/ottr-vs-stba/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: OTTR correlations · STBA correlations
