ACGL vs DDD: Correlation
Measured on weekly returns over the past three years, Arch Capital Group (ACGL) and 3D Systems Corporation (DDD) carry a correlation of -0.22, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACGL and DDD?
Across a 3-year window, the weekly returns of ACGL and DDD correlate at -0.22, negative, meaning they tend to move in opposite directions. The past 12 months show a weaker link (-0.41) than the 3-year average (-0.22). Stretching to 5 years gives -0.07, with an annualized covariance of -423.7 %².
Among the 36 assets we track against ACGL, DDD ranks #29 by 3-year correlation. The last year tells two different stories: DDD led by 26.3 percentage points, +7.7% for ACGL against +34.0% for DDD. One caveat on sizing: DDD is 4.1 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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 DDD: side by side
| ACGL (Arch Capital Group) | DDD (3D Systems Corporation) | |
|---|---|---|
| 1-year return | +7.7% | +34.0% |
| 5-year return | +151.8% | -88.6% |
| Volatility (ann.) | 21.5% | 88.0% |
| Beta vs S&P 500 | 0.28 | 2.29 |
| Max drawdown (3Y) | -22.4% | -79.8% |
| Market cap | $33.7B | $0.6B |
| P/E (trailing) | 7.9 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | Financials | US Listed |
Year-by-year returns
| Year | ACGL | DDD |
|---|---|---|
| 2022 | +41.2% | -65.6% |
| 2023 | +18.3% | -14.2% |
| 2024 | +30.8% | -48.3% |
| 2025 | +3.9% | -46.0% |
| 2026 | +3.0% | +93.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACGL and DDD good diversifiers for each other?
Yes: at -0.22, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between ACGL and DDD?
The ACGL/DDD correlation stands at -0.22 on a 3-year window (1 year: -0.41, 5 years: -0.07), computed from weekly returns as of 2026-08-27.
Is DDD a good diversifier for ACGL?
Yes: at -0.22, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.22 mean?
On the −1 to +1 scale, -0.22 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-ddd.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/acgl-vs-ddd/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ACGL correlations · DDD correlations
