ARKK vs PPSI: Correlation
How closely do ARK Innovation ETF (ARKK) and Pioneer Power Solutions, Inc. (PPSI) trade together? Their weekly returns over three years give a correlation of 0.46, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARKK and PPSI?
On 3 years of weekly data the ARKK/PPSI correlation comes out at 0.46, moderate. The relationship has been stable: the 1-year correlation (0.46) sits close to the 3-year figure. The 5-year figure is 0.25, and annualized covariance runs at 1233.2 %².
Among the 122 assets we track against ARKK, PPSI ranks #88 by 3-year correlation. The last year tells two different stories: ARKK led by 30.2 percentage points, +15.7% for ARKK against -14.5% for PPSI. One caveat on sizing: PPSI is 1.8 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 PPSI: side by side
| ARKK (ARK Innovation ETF) | PPSI (Pioneer Power Solutions, Inc.) | |
|---|---|---|
| 1-year return | +15.7% | -14.5% |
| 5-year return | -27.7% | -7.2% |
| Volatility (ann.) | 38.8% | 68.8% |
| Beta vs S&P 500 | 2.07 | 2.08 |
| Max drawdown (3Y) | -39.6% | -62.6% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | – | 0.00% |
| Sector / category | ETF · Thematic | US Listed |
Year-by-year returns
| Year | ARKK | PPSI |
|---|---|---|
| 2022 | -67.0% | -64.3% |
| 2023 | +69.0% | +153.4% |
| 2024 | +8.4% | -19.4% |
| 2025 | +35.5% | +14.5% |
| 2026 | +13.6% | -37.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARKK and PPSI good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.46 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between ARKK and PPSI?
As of 2026-08-27, the correlation of weekly returns between ARKK and PPSI is 0.46 over 3 years, 0.46 over 1 year and 0.25 over 5 years.
Is PPSI a good diversifier for ARKK?
Yes, to a useful degree: a correlation of 0.46 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.46 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-ppsi.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/arkk-vs-ppsi/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ARKK correlations · PPSI correlations
