ARKK vs RBBN: Correlation
How closely do ARK Innovation ETF (ARKK) and Ribbon Communications Inc. (RBBN) trade together? Their weekly returns over three years give a correlation of 0.50, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ARKK and RBBN?
Over the past 3 years, ARKK and RBBN moved with a correlation of 0.50, which is moderate. The relationship has been stable: the 1-year correlation (0.48) sits close to the 3-year figure. Over 5 years the correlation is 0.42, and the annualized covariance of weekly returns is 989.4 %².
Among the 122 assets we track against ARKK, RBBN ranks #64 by 3-year correlation. The last year tells two different stories: ARKK led by 65.6 percentage points, +15.7% for ARKK against -49.9% for RBBN.
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 RBBN: side by side
| ARKK (ARK Innovation ETF) | RBBN (Ribbon Communications Inc.) | |
|---|---|---|
| 1-year return | +15.7% | -49.9% |
| 5-year return | -27.7% | -69.7% |
| Volatility (ann.) | 38.8% | 50.8% |
| Beta vs S&P 500 | 2.07 | 1.67 |
| Max drawdown (3Y) | -39.6% | -62.1% |
| Market cap | – | $0.4B |
| P/E (trailing) | – | 25.0 |
| Dividend yield | – | 0.00% |
| Sector / category | ETF · Thematic | US Listed |
Year-by-year returns
| Year | ARKK | RBBN |
|---|---|---|
| 2022 | -67.0% | -53.9% |
| 2023 | +69.0% | +3.9% |
| 2024 | +8.4% | +43.4% |
| 2025 | +35.5% | -30.8% |
| 2026 | +13.6% | -30.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ARKK and RBBN good diversifiers for each other?
To a limited degree. At 0.50 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 ARKK and RBBN?
As of 2026-08-27, the correlation of weekly returns between ARKK and RBBN is 0.50 over 3 years, 0.48 over 1 year and 0.42 over 5 years.
Is RBBN a good diversifier for ARKK?
To a limited degree. At 0.50 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 0.50 mean?
A reading of 0.50 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/arkk-vs-rbbn.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/arkk-vs-rbbn/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ARKK correlations · RBBN correlations
