ARQQ vs IONQ: Correlation
Measured on weekly returns over the past three years, Arqit Quantum Inc. (ARQQ) and IonQ, Inc. (IONQ) carry a correlation of 0.57, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARQQ and IONQ?
Across a 3-year window, the weekly returns of ARQQ and IONQ correlate at 0.57, moderate. The relationship has been stable: the 1-year correlation (0.60) sits close to the 3-year figure. Stretching to 5 years gives 0.44, with an annualized covariance of 7761.8 %².
IONQ is one of the assets that tracks ARQQ most closely: it ranks #2 out of the 16 assets we track against ARQQ. The last year tells two different stories: IONQ led by 31.9 percentage points, -29.4% for ARQQ against +2.5% for IONQ.
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.
ARQQ vs IONQ: side by side
| ARQQ (Arqit Quantum Inc.) | IONQ (IonQ, Inc.) | |
|---|---|---|
| 1-year return | -29.4% | +2.5% |
| 5-year return | -91.4% | +325.5% |
| Volatility (ann.) | 135.6% | 100.0% |
| Beta vs S&P 500 | 3.18 | 3.23 |
| Max drawdown (3Y) | -86.7% | -67.6% |
| Market cap | $0.4B | $17.2B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ARQQ | IONQ |
|---|---|---|
| 2022 | -84.9% | -79.3% |
| 2023 | -86.9% | +259.1% |
| 2024 | +227.8% | +237.1% |
| 2025 | -43.7% | +7.4% |
| 2026 | -1.9% | -5.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARQQ and IONQ good diversifiers for each other?
Only partially. A correlation of 0.57 means ARQQ and IONQ share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between ARQQ and IONQ?
Using weekly returns as of 2026-08-27: 0.57 over 3 years, with 0.60 over the last year and 0.44 over 5 years.
Is IONQ a good diversifier for ARQQ?
Only partially. A correlation of 0.57 means ARQQ and IONQ share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.57 mean?
A reading of 0.57 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/arqq-vs-ionq.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/arqq-vs-ionq/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ARQQ correlations · IONQ correlations
