DDD vs RMT: Correlation
3D Systems Corporation (DDD) and Royce Micro-Cap Trust, Inc. (RMT) show a moderate relationship: their 3-year correlation of weekly returns is 0.45.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are DDD and RMT?
Across a 3-year window, the weekly returns of DDD and RMT correlate at 0.45, moderate. The relationship has been stable: the 1-year correlation (0.42) sits close to the 3-year figure. Stretching to 5 years gives 0.52, with an annualized covariance of 809.5 %².
Within DDD's tracked universe of 12 assets, RMT comes in at #5 by 3-year correlation. Over the last 12 months RMT came out ahead by 14.4 percentage points (+34.0% against +48.4%). Risk is not evenly split, since DDD carries 4.3 times the volatility of the other side.
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.
DDD vs RMT: side by side
| DDD (3D Systems Corporation) | RMT (Royce Micro-Cap Trust, Inc.) | |
|---|---|---|
| 1-year return | +34.0% | +48.4% |
| 5-year return | -88.6% | +80.1% |
| Volatility (ann.) | 88.0% | 20.5% |
| Beta vs S&P 500 | 2.29 | 1.09 |
| Max drawdown (3Y) | -79.8% | -26.4% |
| Market cap | $0.6B | $0.8B |
| P/E (trailing) | – | 8.5 |
| Dividend yield | 0.00% | 5.57% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | DDD | RMT |
|---|---|---|
| 2022 | -65.6% | -16.8% |
| 2023 | -14.2% | +15.8% |
| 2024 | -48.3% | +14.0% |
| 2025 | -46.0% | +16.1% |
| 2026 | +93.8% | +39.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are DDD and RMT good diversifiers for each other?
Reasonably. At 0.45, DDD and RMT keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between DDD and RMT?
As of 2026-08-27, the correlation of weekly returns between DDD and RMT is 0.45 over 3 years, 0.42 over 1 year and 0.52 over 5 years.
Is RMT a good diversifier for DDD?
Reasonably. At 0.45, DDD and RMT keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.45 mean?
On the −1 to +1 scale, 0.45 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/ddd-vs-rmt.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/ddd-vs-rmt/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: DDD correlations · RMT correlations
