ARKK vs SPYG: Correlation
How closely do ARK Innovation ETF (ARKK) and SPDR Portfolio S&P 500 Growth ETF (SPYG) trade together? Their weekly returns over three years give a correlation of 0.75, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARKK and SPYG?
Across a 3-year window, the weekly returns of ARKK and SPYG correlate at 0.75, strong. The relationship has been stable: the 1-year correlation (0.72) sits close to the 3-year figure. Stretching to 5 years gives 0.77, with an annualized covariance of 554.6 %².
Within ARKK's tracked universe of 122 assets, SPYG comes in at #14 by 3-year correlation. The trailing year gives SPYG the advantage: +15.7% versus +22.4%, a 6.7-point spread. On a rolling one-year basis the correlation drifted between 0.63 and 0.88, a moderate band. One caveat on sizing: ARKK is 2.1 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 SPYG: side by side
| ARKK (ARK Innovation ETF) | SPYG (SPDR Portfolio S&P 500 Growth ETF) | |
|---|---|---|
| 1-year return | +15.7% | +22.4% |
| 5-year return | -27.7% | +85.9% |
| Volatility (ann.) | 38.8% | 18.9% |
| Beta vs S&P 500 | 2.07 | 1.25 |
| Max drawdown (3Y) | -39.6% | -22.1% |
| Dividend yield | – | 0.49% |
| Expense ratio | – | 0.04% |
| Assets under management | – | $52.2B |
| Sector / category | ETF · Thematic | ETF · US Style |
SPYG is a Large Growth fund from State Street Investment Management: $52.2B under management, 148 holdings, a 0.04% expense ratio, a 0.49% trailing dividend yield.
Year-by-year returns
| Year | ARKK | SPYG |
|---|---|---|
| 2022 | -67.0% | -29.4% |
| 2023 | +69.0% | +30.0% |
| 2024 | +8.4% | +36.0% |
| 2025 | +35.5% | +22.1% |
| 2026 | +13.6% | +14.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARKK and SPYG good diversifiers for each other?
Only partially. A correlation of 0.75 means ARKK and SPYG 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 ARKK and SPYG?
As of 2026-08-27, the correlation of weekly returns between ARKK and SPYG is 0.75 over 3 years, 0.72 over 1 year and 0.77 over 5 years.
Is SPYG a good diversifier for ARKK?
Only partially. A correlation of 0.75 means ARKK and SPYG share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.75 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
$ curl https://www.pairbook.io/api/v1/pairs/arkk-vs-spyg.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/arkk-vs-spyg/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ARKK correlations · SPYG correlations
