SPOK vs VXX: Correlation
How closely do Spok Holdings, Inc. (SPOK) and iPath Series B S&P 500 VIX Short-Term Futures ETN (VXX) trade together? Their weekly returns over three years give a correlation of -0.29, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SPOK and VXX?
On 3 years of weekly data the SPOK/VXX correlation comes out at -0.29, negative, meaning they tend to move in opposite directions. The past 12 months show a tighter link (-0.09) than the 3-year average (-0.29). The 5-year figure is -0.24, and annualized covariance runs at -481.8 %².
Among the 10 assets we track against SPOK, VXX sits near the bottom by co-movement, at rank #9. On 12-month performance SPOK holds a 14.8-point edge, -34.9% against -49.7%. Risk is not evenly split, since VXX carries 2.3 times the volatility of the other side.
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.
SPOK vs VXX: side by side
| SPOK (Spok Holdings, Inc.) | VXX (iPath Series B S&P 500 VIX Short-Term Futures ETN) | |
|---|---|---|
| 1-year return | -34.9% | -49.7% |
| 5-year return | +119.7% | -95.6% |
| Volatility (ann.) | 26.9% | 60.9% |
| Beta vs S&P 500 | 0.60 | -3.31 |
| Max drawdown (3Y) | -39.9% | -83.3% |
| Market cap | $0.2B | – |
| P/E (trailing) | 18.2 | – |
| Dividend yield | 12.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | SPOK | VXX |
|---|---|---|
| 2022 | +2.9% | -23.8% |
| 2023 | +108.0% | -72.5% |
| 2024 | +12.1% | -26.2% |
| 2025 | -10.9% | -42.2% |
| 2026 | -14.5% | -31.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SPOK and VXX good diversifiers for each other?
Yes: at -0.29, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between SPOK and VXX?
Using weekly returns as of 2026-08-27: -0.29 over 3 years, with -0.09 over the last year and -0.24 over 5 years.
Is VXX a good diversifier for SPOK?
Yes: at -0.29, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.29 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/spok-vs-vxx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/spok-vs-vxx/)
Free with attribution; caching and terms are described in the API documentation.
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Hubs: SPOK correlations · VXX correlations
