ACNB vs TMP: Correlation
How closely do ACNB Corporation (ACNB) and Tompkins Financial Corporation (TMP) trade together? Their weekly returns over three years give a correlation of 0.78, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACNB and TMP?
Over the past 3 years, ACNB and TMP moved with a correlation of 0.78, which is strong. The relationship has been stable: the 1-year correlation (0.79) sits close to the 3-year figure. Over 5 years the correlation is 0.67, and the annualized covariance of weekly returns is 829.5 %².
In ACNB's tracked universe of 11 assets, TMP sits right near the top at #2. Neither side won the trailing year by much: +45.8% against +41.8%.
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.
ACNB vs TMP: side by side
| ACNB (ACNB Corporation) | TMP (Tompkins Financial Corporation) | |
|---|---|---|
| 1-year return | +45.8% | +41.8% |
| 5-year return | +163.7% | +49.6% |
| Volatility (ann.) | 33.7% | 31.6% |
| Beta vs S&P 500 | 0.81 | 0.72 |
| Max drawdown (3Y) | -34.6% | -30.9% |
| Market cap | $0.7B | $1.4B |
| P/E (trailing) | 12.1 | 8.0 |
| Dividend yield | 2.36% | 2.68% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ACNB | TMP |
|---|---|---|
| 2022 | +31.2% | -4.4% |
| 2023 | +16.2% | -19.2% |
| 2024 | -8.0% | +17.8% |
| 2025 | +25.2% | +11.1% |
| 2026 | +36.8% | +37.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACNB and TMP good diversifiers for each other?
Only partially. A correlation of 0.78 means ACNB and TMP 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 ACNB and TMP?
The ACNB/TMP correlation stands at 0.78 on a 3-year window (1 year: 0.79, 5 years: 0.67), computed from weekly returns as of 2026-08-27.
Is TMP a good diversifier for ACNB?
Only partially. A correlation of 0.78 means ACNB and TMP share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.78 mean?
A reading of 0.78 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/acnb-vs-tmp.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/acnb-vs-tmp/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ACNB correlations · TMP correlations
