AI vs ARKK: Correlation
How closely do C3.ai, Inc. (AI) and ARK Innovation ETF (ARKK) trade together? Their weekly returns over three years give a correlation of 0.55, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AI and ARKK?
Across a 3-year window, the weekly returns of AI and ARKK correlate at 0.55, moderate. Recent behaviour matches the longer record: 0.58 over 1 year against 0.55 over 3. Stretching to 5 years gives 0.61, with an annualized covariance of 1403.3 %².
In AI's tracked universe of 15 assets, ARKK sits right near the top at #3. The last year tells two different stories: ARKK led by 56.0 percentage points, -40.3% for AI against +15.7% for ARKK. Risk is not evenly split, since AI carries 1.7 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.
AI vs ARKK: side by side
| AI (C3.ai, Inc.) | ARKK (ARK Innovation ETF) | |
|---|---|---|
| 1-year return | -40.3% | +15.7% |
| 5-year return | -79.8% | -27.7% |
| Volatility (ann.) | 65.5% | 38.8% |
| Beta vs S&P 500 | 2.09 | 2.07 |
| Max drawdown (3Y) | -81.9% | -39.6% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | ETF · Thematic |
Year-by-year returns
| Year | AI | ARKK |
|---|---|---|
| 2022 | -64.2% | -67.0% |
| 2023 | +156.6% | +69.0% |
| 2024 | +19.9% | +8.4% |
| 2025 | -60.8% | +35.5% |
| 2026 | -23.4% | +13.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AI and ARKK good diversifiers for each other?
Somewhat, no more. With 0.55 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between AI and ARKK?
The AI/ARKK correlation stands at 0.55 on a 3-year window (1 year: 0.58, 5 years: 0.61), computed from weekly returns as of 2026-08-27.
Is ARKK a good diversifier for AI?
Somewhat, no more. With 0.55 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.55 mean?
A reading of 0.55 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/ai-vs-arkk.json
Markdown for the live badge, attribution link included:
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Related comparisons
Hubs: AI correlations · ARKK correlations
