AMSC vs RMT: Correlation
American Superconductor Corporation (AMSC) and Royce Micro-Cap Trust, Inc. (RMT) show a moderate relationship: their 3-year correlation of weekly returns is 0.52.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AMSC and RMT?
Over the past 3 years, AMSC and RMT moved with a correlation of 0.52, which is moderate. The relationship has been stable: the 1-year correlation (0.49) sits close to the 3-year figure. Over 5 years the correlation is 0.54, and the annualized covariance of weekly returns is 840.5 %².
In AMSC's tracked universe of 13 assets, RMT sits right near the top at #1. Correlation aside, the last 12 months split them widely, with RMT ahead by 91.1 points (-42.7% versus +48.4%). Risk is not evenly split, since AMSC carries 3.8 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.
AMSC vs RMT: side by side
| AMSC (American Superconductor Corporation) | RMT (Royce Micro-Cap Trust, Inc.) | |
|---|---|---|
| 1-year return | -42.7% | +48.4% |
| 5-year return | +141.8% | +80.1% |
| Volatility (ann.) | 78.4% | 20.5% |
| Beta vs S&P 500 | 2.16 | 1.09 |
| Max drawdown (3Y) | -61.1% | -26.4% |
| Market cap | $1.4B | $0.8B |
| P/E (trailing) | 9.6 | 8.5 |
| Dividend yield | 0.00% | 5.57% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | AMSC | RMT |
|---|---|---|
| 2022 | -66.2% | -16.8% |
| 2023 | +202.7% | +15.8% |
| 2024 | +121.1% | +14.0% |
| 2025 | +16.8% | +16.1% |
| 2026 | +3.7% | +39.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AMSC and RMT good diversifiers for each other?
To a limited degree. At 0.52 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between AMSC and RMT?
Using weekly returns as of 2026-08-27: 0.52 over 3 years, with 0.49 over the last year and 0.54 over 5 years.
Is RMT a good diversifier for AMSC?
To a limited degree. At 0.52 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.52 mean?
A reading of 0.52 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/amsc-vs-rmt.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/amsc-vs-rmt/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: AMSC correlations · RMT correlations
