ACWI vs ARKK: Correlation
How closely do iShares MSCI ACWI ETF (ACWI) and ARK Innovation ETF (ARKK) trade together? Their weekly returns over three years give a correlation of 0.76, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACWI and ARKK?
On 3 years of weekly data the ACWI/ARKK correlation comes out at 0.76, strong. Recent behaviour matches the longer record: 0.68 over 1 year against 0.76 over 3. The 5-year figure is 0.77, and annualized covariance runs at 408.1 %².
Among the 119 assets we track against ACWI, ARKK ranks #51 by 3-year correlation. On 12-month performance ACWI holds a 7.0-point edge, +22.7% against +15.7%. Stability stands out here, with the rolling one-year correlation confined to 0.62 through 0.86. Risk is not evenly split, since ARKK carries 2.8 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.
ACWI vs ARKK: side by side
| ACWI (iShares MSCI ACWI ETF) | ARKK (ARK Innovation ETF) | |
|---|---|---|
| 1-year return | +22.7% | +15.7% |
| 5-year return | +69.0% | -27.7% |
| Volatility (ann.) | 13.8% | 38.8% |
| Beta vs S&P 500 | 0.92 | 2.07 |
| Max drawdown (3Y) | -16.5% | -39.6% |
| Dividend yield | 1.44% | – |
| Expense ratio | 0.32% | – |
| Assets under management | $32.5B | – |
| Sector / category | ETF · Global | ETF · Thematic |
ACWI is a Global Large-Stock Blend fund from iShares: $32.5B under management, 1590 holdings, a 0.32% expense ratio, a 1.44% trailing dividend yield.
Year-by-year returns
| Year | ACWI | ARKK |
|---|---|---|
| 2022 | -18.4% | -67.0% |
| 2023 | +22.3% | +69.0% |
| 2024 | +17.4% | +8.4% |
| 2025 | +22.4% | +35.5% |
| 2026 | +14.9% | +13.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACWI and ARKK good diversifiers for each other?
To a limited degree. At 0.76 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 ACWI and ARKK?
The ACWI/ARKK correlation stands at 0.76 on a 3-year window (1 year: 0.68, 5 years: 0.77), computed from weekly returns as of 2026-08-27.
Is ARKK a good diversifier for ACWI?
To a limited degree. At 0.76 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 0.76 mean?
A reading of 0.76 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/acwi-vs-arkk.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/acwi-vs-arkk/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ACWI correlations · ARKK correlations
