ARKK vs BJ: Correlation
ARK Innovation ETF (ARKK) and BJ's Wholesale Club Holdings, Inc. (BJ) show a negative relationship: their 3-year correlation of weekly returns is -0.13.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARKK and BJ?
Over the past 3 years, ARKK and BJ moved with a correlation of -0.13, which is negative, meaning they tend to move in opposite directions. The past 12 months show a weaker link (-0.35) than the 3-year average (-0.13). Over 5 years the correlation is 0.09, and the annualized covariance of weekly returns is -132.4 %².
Within ARKK's tracked universe of 122 assets, BJ comes in at #114 by 3-year correlation. Correlation aside, the last 12 months split them widely, with ARKK ahead by 22.6 points (+15.7% versus -6.9%).
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 BJ: side by side
| ARKK (ARK Innovation ETF) | BJ (BJ's Wholesale Club Holdings, Inc.) | |
|---|---|---|
| 1-year return | +15.7% | -6.9% |
| 5-year return | -27.7% | +59.5% |
| Volatility (ann.) | 38.8% | 26.4% |
| Beta vs S&P 500 | 2.07 | -0.14 |
| Max drawdown (3Y) | -39.6% | -30.1% |
| Market cap | – | $11.4B |
| P/E (trailing) | – | 20.4 |
| Dividend yield | – | 0.00% |
| Sector / category | ETF · Thematic | US Listed |
Year-by-year returns
| Year | ARKK | BJ |
|---|---|---|
| 2022 | -67.0% | -1.2% |
| 2023 | +69.0% | +0.8% |
| 2024 | +8.4% | +34.0% |
| 2025 | +35.5% | +0.8% |
| 2026 | +13.6% | +0.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARKK and BJ good diversifiers for each other?
Yes. With a correlation of -0.13, ARKK and BJ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between ARKK and BJ?
Using weekly returns as of 2026-08-27: -0.13 over 3 years, with -0.35 over the last year and 0.09 over 5 years.
Is BJ a good diversifier for ARKK?
Yes. With a correlation of -0.13, ARKK and BJ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.13 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-bj.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/arkk-vs-bj/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ARKK correlations · BJ correlations
