DGICB vs WMS: Correlation
Donegal Group, Inc. (DGICB) and Advanced Drainage Systems, Inc. (WMS) show a moderate relationship: their 3-year correlation of weekly returns is 0.31.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DGICB and WMS?
On 3 years of weekly data the DGICB/WMS correlation comes out at 0.31, moderate. Lately the two have moved closer together, with the 1-year correlation at 0.43 versus 0.31 over 3 years. The 5-year figure is 0.21, and annualized covariance runs at 477.0 %².
WMS is one of the assets that tracks DGICB most closely: it ranks #1 out of the 19 assets we track against DGICB. Their recent paths diverged sharply: over the last 12 months DGICB outperformed by 72.7 percentage points (+68.3% for DGICB against -4.4% for WMS).
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.
DGICB vs WMS: side by side
| DGICB (Donegal Group, Inc.) | WMS (Advanced Drainage Systems, Inc.) | |
|---|---|---|
| 1-year return | +68.3% | -4.4% |
| 5-year return | +82.3% | +22.1% |
| Volatility (ann.) | 41.5% | 37.1% |
| Beta vs S&P 500 | 0.15 | 1.31 |
| Max drawdown (3Y) | -30.3% | -45.8% |
| Market cap | $0.9B | $10.5B |
| P/E (trailing) | 12.1 | 23.6 |
| Dividend yield | 3.00% | 0.52% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | DGICB | WMS |
|---|---|---|
| 2022 | +25.8% | -39.5% |
| 2023 | -6.8% | +72.4% |
| 2024 | +1.6% | -17.5% |
| 2025 | +30.8% | +26.0% |
| 2026 | +34.6% | -3.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DGICB and WMS good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.31 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between DGICB and WMS?
As of 2026-08-27, the correlation of weekly returns between DGICB and WMS is 0.31 over 3 years, 0.43 over 1 year and 0.21 over 5 years.
Is WMS a good diversifier for DGICB?
Yes, to a useful degree: a correlation of 0.31 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.31 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/dgicb-vs-wms.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/dgicb-vs-wms/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: DGICB correlations · WMS correlations
