ARKK vs ARQQ: Correlation
Measured on weekly returns over the past three years, ARK Innovation ETF (ARKK) and Arqit Quantum Inc. (ARQQ) carry a correlation of 0.52, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARKK and ARQQ?
Across a 3-year window, the weekly returns of ARKK and ARQQ correlate at 0.52, moderate. The link has tightened recently: the 1-year correlation (0.69) runs above the 3-year figure (0.52). Stretching to 5 years gives 0.37, with an annualized covariance of 2713.3 %².
By 3-year correlation, ARQQ places #53 of the 122 assets tracked against ARKK. Their recent paths diverged sharply: over the last 12 months ARKK outperformed by 45.1 percentage points (+15.7% for ARKK against -29.4% for ARQQ). One caveat on sizing: ARQQ is 3.5 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
ARKK vs ARQQ: side by side
| ARKK (ARK Innovation ETF) | ARQQ (Arqit Quantum Inc.) | |
|---|---|---|
| 1-year return | +15.7% | -29.4% |
| 5-year return | -27.7% | -91.4% |
| Volatility (ann.) | 38.8% | 135.6% |
| Beta vs S&P 500 | 2.07 | 3.18 |
| Max drawdown (3Y) | -39.6% | -86.7% |
| Market cap | – | $0.4B |
| P/E (trailing) | – | – |
| Dividend yield | – | 0.00% |
| Sector / category | ETF · Thematic | US Listed |
Year-by-year returns
| Year | ARKK | ARQQ |
|---|---|---|
| 2022 | -67.0% | -84.9% |
| 2023 | +69.0% | -86.9% |
| 2024 | +8.4% | +227.8% |
| 2025 | +35.5% | -43.7% |
| 2026 | +13.6% | -1.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARKK and ARQQ good diversifiers for each other?
To a limited degree. At 0.52 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between ARKK and ARQQ?
Using weekly returns as of 2026-08-27: 0.52 over 3 years, with 0.69 over the last year and 0.37 over 5 years.
Is ARQQ a good diversifier for ARKK?
To a limited degree. At 0.52 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.52 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/arkk-vs-arqq.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/arkk-vs-arqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ARKK correlations · ARQQ correlations
