ISTR vs ORRF: Correlation
Investar Holding Corporation (ISTR) and Orrstown Financial Services, Inc. (ORRF) show a strong relationship: their 3-year correlation of weekly returns is 0.75.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ISTR and ORRF?
Over the past 3 years, ISTR and ORRF moved with a correlation of 0.75, which is strong. Recent behaviour matches the longer record: 0.75 over 1 year against 0.75 over 3. Over 5 years the correlation is 0.63, and the annualized covariance of weekly returns is 685.0 %².
ORRF is one of the assets that tracks ISTR most closely: it ranks #3 out of the 12 assets we track against ISTR. Over the last 12 months ISTR came out ahead by 7.7 percentage points (+32.3% against +24.6%).
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.
ISTR vs ORRF: side by side
| ISTR (Investar Holding Corporation) | ORRF (Orrstown Financial Services, Inc.) | |
|---|---|---|
| 1-year return | +32.3% | +24.6% |
| 5-year return | +50.1% | +111.1% |
| Volatility (ann.) | 32.1% | 28.5% |
| Beta vs S&P 500 | 0.84 | 0.84 |
| Max drawdown (3Y) | -35.3% | -35.9% |
| Market cap | $0.4B | $0.8B |
| P/E (trailing) | 12.4 | 9.5 |
| Dividend yield | 1.50% | 2.70% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ISTR | ORRF |
|---|---|---|
| 2022 | +19.0% | -5.3% |
| 2023 | -28.6% | +32.3% |
| 2024 | +50.7% | +27.7% |
| 2025 | +24.2% | -0.0% |
| 2026 | +14.2% | +21.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ISTR and ORRF good diversifiers for each other?
To a limited degree. At 0.75 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between ISTR and ORRF?
As of 2026-08-27, the correlation of weekly returns between ISTR and ORRF is 0.75 over 3 years, 0.75 over 1 year and 0.63 over 5 years.
Is ORRF a good diversifier for ISTR?
To a limited degree. At 0.75 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.75 mean?
On the −1 to +1 scale, 0.75 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/istr-vs-orrf.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/istr-vs-orrf/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ISTR correlations · ORRF correlations
