ARKK vs GRAL: Correlation
Measured on weekly returns over the past three years, ARK Innovation ETF (ARKK) and GRAIL, Inc. (GRAL) carry a correlation of 0.44, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARKK and GRAL?
Over the past 3 years, ARKK and GRAL moved with a correlation of 0.44, which is moderate. Little has changed lately, as the 1-year reading of 0.37 lands near the 3-year figure. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is 1794.9 %².
By 3-year correlation, GRAL places #93 of the 122 assets tracked against ARKK. Correlation aside, the last 12 months split them widely, with GRAL ahead by 129.6 points (+15.7% versus +145.3%). One caveat on sizing: GRAL is 2.7 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 GRAL: side by side
| ARKK (ARK Innovation ETF) | GRAL (GRAIL, Inc.) | |
|---|---|---|
| 1-year return | +15.7% | +145.3% |
| 5-year return | -27.7% | n/a |
| Volatility (ann.) | 38.8% | 103.8% |
| Beta vs S&P 500 | 2.07 | 2.60 |
| Max drawdown (3Y) | -39.6% | -62.9% |
| Market cap | – | $3.7B |
| P/E (trailing) | – | – |
| Dividend yield | – | 0.00% |
| Sector / category | ETF · Thematic | US Listed |
Year-by-year returns
| Year | ARKK | GRAL |
|---|---|---|
| 2022 | -67.0% | – |
| 2023 | +69.0% | – |
| 2024 | +8.4% | – |
| 2025 | +35.5% | +379.5% |
| 2026 | +13.6% | -3.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARKK and GRAL good diversifiers for each other?
A fair diversifier. At 0.44, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ARKK and GRAL?
As of 2026-08-27, the correlation of weekly returns between ARKK and GRAL is 0.44 over 3 years, 0.37 over 1 year and n/a over 5 years.
Is GRAL a good diversifier for ARKK?
A fair diversifier. At 0.44, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.44 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
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Related comparisons
Hubs: ARKK correlations · GRAL correlations
