ACHR vs ARKK: Correlation
Archer Aviation Inc. (ACHR) and ARK Innovation ETF (ARKK) show a strong relationship: their 3-year correlation of weekly returns is 0.63.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACHR and ARKK?
On 3 years of weekly data the ACHR/ARKK correlation comes out at 0.63, strong. The past 12 months show a tighter link (0.75) than the 3-year average (0.63). The 5-year figure is 0.51, and annualized covariance runs at 2157.9 %².
Few assets follow ACHR as closely as ARKK, which ranks #2 of 26 tracked partners. The last year tells two different stories: ARKK led by 50.9 percentage points, -35.2% for ACHR against +15.7% for ARKK. Note the risk asymmetry: ACHR runs 2.3 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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 ARKK: side by side
| ACHR (Archer Aviation Inc.) | ARKK (ARK Innovation ETF) | |
|---|---|---|
| 1-year return | -35.2% | +15.7% |
| 5-year return | -40.7% | -27.7% |
| Volatility (ann.) | 87.9% | 38.8% |
| Beta vs S&P 500 | 3.18 | 2.07 |
| Max drawdown (3Y) | -67.4% | -39.6% |
| Market cap | $4.6B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | ETF · Thematic |
Year-by-year returns
| Year | ACHR | ARKK |
|---|---|---|
| 2022 | -69.0% | -67.0% |
| 2023 | +228.3% | +69.0% |
| 2024 | +58.8% | +8.4% |
| 2025 | -22.9% | +35.5% |
| 2026 | -21.1% | +13.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACHR and ARKK good diversifiers for each other?
Only partially. A correlation of 0.63 means ACHR and ARKK 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 ACHR and ARKK?
Using weekly returns as of 2026-08-27: 0.63 over 3 years, with 0.75 over the last year and 0.51 over 5 years.
Is ARKK a good diversifier for ACHR?
Only partially. A correlation of 0.63 means ACHR and ARKK share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.63 mean?
On the −1 to +1 scale, 0.63 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/achr-vs-arkk.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/achr-vs-arkk/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ACHR correlations · ARKK correlations
