ARCT vs HOWL: Correlation
Arcturus Therapeutics Holdings Inc. (ARCT) and Werewolf Therapeutics, Inc. (HOWL) show a moderate relationship: their 3-year correlation of weekly returns is 0.48.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARCT and HOWL?
Over the past 3 years, ARCT and HOWL moved with a correlation of 0.48, which is moderate. The past 12 months show a tighter link (0.63) than the 3-year average (0.48). Over 5 years the correlation is 0.36, and the annualized covariance of weekly returns is 5368.6 %².
Within ARCT's tracked universe of 14 assets, HOWL comes in at #6 by 3-year correlation. The last year tells two different stories: ARCT led by 20.5 percentage points, -6.5% for ARCT against -27.0% for HOWL.
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 HOWL: side by side
| ARCT (Arcturus Therapeutics Holdings Inc.) | HOWL (Werewolf Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | -6.5% | -27.0% |
| 5-year return | -69.9% | -94.4% |
| Volatility (ann.) | 90.6% | 124.1% |
| Beta vs S&P 500 | 2.39 | 1.39 |
| Max drawdown (3Y) | -87.5% | -96.1% |
| Market cap | $0.5B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ARCT | HOWL |
|---|---|---|
| 2022 | -54.2% | -82.8% |
| 2023 | +85.9% | +88.3% |
| 2024 | -46.2% | -61.7% |
| 2025 | -63.9% | -57.2% |
| 2026 | +163.8% | +53.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARCT and HOWL good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.48 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between ARCT and HOWL?
Using weekly returns as of 2026-08-27: 0.48 over 3 years, with 0.63 over the last year and 0.36 over 5 years.
Is HOWL a good diversifier for ARCT?
Yes, to a useful degree: a correlation of 0.48 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.48 mean?
On the −1 to +1 scale, 0.48 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/arct-vs-howl.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/arct-vs-howl/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ARCT correlations · HOWL correlations
