ROMA vs ULBI: Correlation
Measured on weekly returns over the past three years, Roma Green Finance Limited - Class A (ROMA) and Ultralife Corporation (ULBI) carry a correlation of 0.32, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ROMA and ULBI?
On 3 years of weekly data the ROMA/ULBI correlation comes out at 0.32, moderate. The relationship has been stable: the 1-year correlation (0.31) sits close to the 3-year figure. The 5-year figure is n/a, and annualized covariance runs at 2236.8 %².
Within ROMA's tracked universe of 11 assets, ULBI comes in at #5 by 3-year correlation. The last year tells two different stories: ROMA led by 269.3 percentage points, +263.6% for ROMA against -5.7% for ULBI. Risk is not evenly split, since ROMA carries 2.1 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.
ROMA vs ULBI: side by side
| ROMA (Roma Green Finance Limited - Class A) | ULBI (Ultralife Corporation) | |
|---|---|---|
| 1-year return | +263.6% | -5.7% |
| 5-year return | n/a | -19.1% |
| Volatility (ann.) | 122.9% | 59.1% |
| Beta vs S&P 500 | 0.47 | 1.74 |
| Max drawdown (3Y) | -88.0% | -68.8% |
| Market cap | $0.5B | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ROMA | ULBI |
|---|---|---|
| 2022 | – | -36.1% |
| 2023 | – | +76.7% |
| 2024 | – | +9.2% |
| 2025 | +116.7% | -23.2% |
| 2026 | +442.1% | +13.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ROMA and ULBI good diversifiers for each other?
Reasonably. At 0.32, ROMA and ULBI keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between ROMA and ULBI?
The ROMA/ULBI correlation stands at 0.32 on a 3-year window (1 year: 0.31, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is ULBI a good diversifier for ROMA?
Reasonably. At 0.32, ROMA and ULBI keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.32 mean?
A reading of 0.32 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/roma-vs-ulbi.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/roma-vs-ulbi/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ROMA correlations · ULBI correlations
