ACGL vs ERIE: Correlation
Measured on weekly returns over the past three years, Arch Capital Group (ACGL) and Erie Indemnity (ERIE) carry a correlation of 0.44, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACGL and ERIE?
Across a 3-year window, the weekly returns of ACGL and ERIE correlate at 0.44, moderate. The relationship has been stable: the 1-year correlation (0.43) sits close to the 3-year figure. Stretching to 5 years gives 0.34, with an annualized covariance of 286.2 %².
By 3-year correlation, ERIE places #20 of the 36 assets tracked against ACGL. Their recent paths diverged sharply: over the last 12 months ACGL outperformed by 32.2 percentage points (+7.7% for ACGL against -24.5% for ERIE). The relationship is regime-dependent: the rolling one-year correlation swung between -0.06 and 0.65 over the past three years, so this pair behaves very differently depending on the market environment.
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.
ACGL vs ERIE: side by side
| ACGL (Arch Capital Group) | ERIE (Erie Indemnity) | |
|---|---|---|
| 1-year return | +7.7% | -24.5% |
| 5-year return | +151.8% | +61.3% |
| Volatility (ann.) | 21.5% | 30.3% |
| Beta vs S&P 500 | 0.28 | 0.37 |
| Max drawdown (3Y) | -22.4% | -60.9% |
| Market cap | $33.7B | $13.6B |
| P/E (trailing) | 7.9 | 23.4 |
| Dividend yield | 0.00% | 2.24% |
| Sector / category | Financials | Financials |
Year-by-year returns
| Year | ACGL | ERIE |
|---|---|---|
| 2022 | +41.2% | +32.0% |
| 2023 | +18.3% | +37.3% |
| 2024 | +30.8% | +24.7% |
| 2025 | +3.9% | -29.4% |
| 2026 | +3.0% | -8.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACGL and ERIE good diversifiers for each other?
A fair diversifier. At 0.44, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ACGL and ERIE?
The ACGL/ERIE correlation stands at 0.44 on a 3-year window (1 year: 0.43, 5 years: 0.34), computed from weekly returns as of 2026-08-27.
Is ERIE a good diversifier for ACGL?
A fair diversifier. At 0.44, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.44 mean?
On the −1 to +1 scale, 0.44 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/acgl-vs-erie.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/acgl-vs-erie/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ACGL correlations · ERIE correlations
