ACHV vs ARKK: Correlation
Achieve Life Sciences, Inc. (ACHV) and ARK Innovation ETF (ARKK) show a moderate relationship: their 3-year correlation of weekly returns is 0.42.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACHV and ARKK?
On 3 years of weekly data the ACHV/ARKK correlation comes out at 0.42, moderate. The past 12 months show a tighter link (0.52) than the 3-year average (0.42). The 5-year figure is 0.39, and annualized covariance runs at 1321.7 %².
By 3-year correlation, ARKK places #4 of the 13 assets tracked against ACHV. Their recent paths diverged sharply: over the last 12 months ACHV outperformed by 158.8 percentage points (+174.5% for ACHV against +15.7% for ARKK). Note the risk asymmetry: ACHV runs 2.1 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.
ACHV vs ARKK: side by side
| ACHV (Achieve Life Sciences, Inc.) | ARKK (ARK Innovation ETF) | |
|---|---|---|
| 1-year return | +174.5% | +15.7% |
| 5-year return | +3.2% | -27.7% |
| Volatility (ann.) | 81.5% | 38.8% |
| Beta vs S&P 500 | 2.08 | 2.07 |
| Max drawdown (3Y) | -66.2% | -39.6% |
| Market cap | $0.8B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | ETF · Thematic |
Year-by-year returns
| Year | ACHV | ARKK |
|---|---|---|
| 2022 | -68.5% | -67.0% |
| 2023 | +68.2% | +69.0% |
| 2024 | -14.6% | +8.4% |
| 2025 | +41.2% | +35.5% |
| 2026 | +64.6% | +13.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACHV and ARKK good diversifiers for each other?
A fair diversifier. At 0.42, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ACHV and ARKK?
As of 2026-08-27, the correlation of weekly returns between ACHV and ARKK is 0.42 over 3 years, 0.52 over 1 year and 0.39 over 5 years.
Is ARKK a good diversifier for ACHV?
A fair diversifier. At 0.42, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.42 mean?
A reading of 0.42 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/achv-vs-arkk.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/achv-vs-arkk/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ACHV correlations · ARKK correlations
