ARCT vs MRNA: Correlation
Measured on weekly returns over the past three years, Arcturus Therapeutics Holdings Inc. (ARCT) and Moderna (MRNA) carry a correlation of 0.51, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARCT and MRNA?
On 3 years of weekly data the ARCT/MRNA correlation comes out at 0.51, moderate. The link has tightened recently: the 1-year correlation (0.66) runs above the 3-year figure (0.51). The 5-year figure is 0.53, and annualized covariance runs at 4681.2 %².
By 3-year correlation, MRNA places #4 of the 14 assets tracked against ARCT. Their recent paths diverged sharply: over the last 12 months MRNA outperformed by 475.3 percentage points (-6.5% for ARCT against +468.8% for MRNA).
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.
ARCT vs MRNA: side by side
| ARCT (Arcturus Therapeutics Holdings Inc.) | MRNA (Moderna) | |
|---|---|---|
| 1-year return | -6.5% | +468.8% |
| 5-year return | -69.9% | -61.5% |
| Volatility (ann.) | 90.6% | 100.7% |
| Beta vs S&P 500 | 2.39 | 0.98 |
| Max drawdown (3Y) | -87.5% | -86.6% |
| Market cap | $0.5B | $57.0B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | Health Care |
Year-by-year returns
| Year | ARCT | MRNA |
|---|---|---|
| 2022 | -54.2% | -29.3% |
| 2023 | +85.9% | -44.6% |
| 2024 | -46.2% | -58.2% |
| 2025 | -63.9% | -29.1% |
| 2026 | +163.8% | +384.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARCT and MRNA good diversifiers for each other?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between ARCT and MRNA?
The ARCT/MRNA correlation stands at 0.51 on a 3-year window (1 year: 0.66, 5 years: 0.53), computed from weekly returns as of 2026-08-27.
Is MRNA a good diversifier for ARCT?
Somewhat, no more. With 0.51 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.51 mean?
A reading of 0.51 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/arct-vs-mrna.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/arct-vs-mrna/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ARCT correlations · MRNA correlations
