ACHR vs ARQQ: Correlation
Archer Aviation Inc. (ACHR) and Arqit Quantum Inc. (ARQQ) show a moderate relationship: their 3-year correlation of weekly returns is 0.53.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACHR and ARQQ?
Across a 3-year window, the weekly returns of ACHR and ARQQ correlate at 0.53, moderate. The link has tightened recently: the 1-year correlation (0.69) runs above the 3-year figure (0.53). Stretching to 5 years gives 0.33, with an annualized covariance of 6339.4 %².
Among the 26 assets we track against ACHR, ARQQ ranks #7 by 3-year correlation. Over the last 12 months ARQQ came out ahead by 5.8 percentage points (-35.2% against -29.4%). Risk is not evenly split, since ARQQ carries 1.5 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.
ACHR vs ARQQ: side by side
| ACHR (Archer Aviation Inc.) | ARQQ (Arqit Quantum Inc.) | |
|---|---|---|
| 1-year return | -35.2% | -29.4% |
| 5-year return | -40.7% | -91.4% |
| Volatility (ann.) | 87.9% | 135.6% |
| Beta vs S&P 500 | 3.18 | 3.18 |
| Max drawdown (3Y) | -67.4% | -86.7% |
| Market cap | $4.6B | $0.4B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ACHR | ARQQ |
|---|---|---|
| 2022 | -69.0% | -84.9% |
| 2023 | +228.3% | -86.9% |
| 2024 | +58.8% | +227.8% |
| 2025 | -22.9% | -43.7% |
| 2026 | -21.1% | -1.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACHR and ARQQ good diversifiers for each other?
Somewhat, no more. With 0.53 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between ACHR and ARQQ?
Using weekly returns as of 2026-08-27: 0.53 over 3 years, with 0.69 over the last year and 0.33 over 5 years.
Is ARQQ a good diversifier for ACHR?
Somewhat, no more. With 0.53 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.53 mean?
A reading of 0.53 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/achr-vs-arqq.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/achr-vs-arqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ACHR correlations · ARQQ correlations
