RBBN vs VXZ: Correlation
How closely do Ribbon Communications Inc. (RBBN) and iPath Series B S&P 500 VIX Mid-Term Futures ETN (VXZ) trade together? Their weekly returns over three years give a correlation of -0.39, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RBBN and VXZ?
Over the past 3 years, RBBN and VXZ moved with a correlation of -0.39, which is negative, meaning they tend to move in opposite directions. Lately the two have moved closer together, with the 1-year correlation at -0.26 versus -0.39 over 3 years. Over 5 years the correlation is -0.32, and the annualized covariance of weekly returns is -501.6 %².
Out of 11 assets tracked against RBBN, VXZ lands near the bottom at #9. Their recent paths diverged sharply: over the last 12 months VXZ outperformed by 33.8 percentage points (-49.9% for RBBN against -16.1% for VXZ). One caveat on sizing: RBBN is 2.0 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.
RBBN vs VXZ: side by side
| RBBN (Ribbon Communications Inc.) | VXZ (iPath Series B S&P 500 VIX Mid-Term Futures ETN) | |
|---|---|---|
| 1-year return | -49.9% | -16.1% |
| 5-year return | -69.7% | -53.1% |
| Volatility (ann.) | 50.8% | 25.6% |
| Beta vs S&P 500 | 1.67 | -1.31 |
| Max drawdown (3Y) | -62.1% | -36.4% |
| Market cap | $0.4B | – |
| P/E (trailing) | 25.0 | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | RBBN | VXZ |
|---|---|---|
| 2022 | -53.9% | +0.5% |
| 2023 | +3.9% | -44.0% |
| 2024 | +43.4% | -12.7% |
| 2025 | -30.8% | +5.7% |
| 2026 | -30.6% | -10.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RBBN and VXZ good diversifiers for each other?
By historical standards, yes. A correlation of -0.39 means the two rarely move for the same reasons.
FAQ
What is the correlation between RBBN and VXZ?
Using weekly returns as of 2026-08-27: -0.39 over 3 years, with -0.26 over the last year and -0.32 over 5 years.
Is VXZ a good diversifier for RBBN?
By historical standards, yes. A correlation of -0.39 means the two rarely move for the same reasons.
What does a correlation of -0.39 mean?
On the −1 to +1 scale, -0.39 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/rbbn-vs-vxz.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/rbbn-vs-vxz/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: RBBN correlations · VXZ correlations
