SSTI vs VXX: Correlation
Measured on weekly returns over the past three years, SoundThinking, Inc. (SSTI) and iPath Series B S&P 500 VIX Short-Term Futures ETN (VXX) carry a correlation of -0.33, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SSTI and VXX?
On 3 years of weekly data the SSTI/VXX correlation comes out at -0.33, negative, meaning they tend to move in opposite directions. The link has tightened recently: the 1-year correlation (-0.22) runs above the 3-year figure (-0.33). The 5-year figure is -0.25, and annualized covariance runs at -1070.7 %².
VXX is close to the least connected end of SSTI's tracked universe, ranking #10 of 11. Their 12-month results are close: -49.3% for SSTI against -49.7% for VXX.
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.
SSTI vs VXX: side by side
| SSTI (SoundThinking, Inc.) | VXX (iPath Series B S&P 500 VIX Short-Term Futures ETN) | |
|---|---|---|
| 1-year return | -49.3% | -49.7% |
| 5-year return | -83.7% | -95.6% |
| Volatility (ann.) | 53.5% | 60.9% |
| Beta vs S&P 500 | 1.25 | -3.31 |
| Max drawdown (3Y) | -78.3% | -83.3% |
| Market cap | $0.1B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | SSTI | VXX |
|---|---|---|
| 2022 | +14.6% | -23.8% |
| 2023 | -24.5% | -72.5% |
| 2024 | -48.9% | -26.2% |
| 2025 | -38.5% | -42.2% |
| 2026 | -21.3% | -31.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SSTI and VXX good diversifiers for each other?
Yes. With a correlation of -0.33, SSTI and VXX have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between SSTI and VXX?
Using weekly returns as of 2026-08-27: -0.33 over 3 years, with -0.22 over the last year and -0.25 over 5 years.
Is VXX a good diversifier for SSTI?
Yes. With a correlation of -0.33, SSTI and VXX have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.33 mean?
A reading of -0.33 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/ssti-vs-vxx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ssti-vs-vxx/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: SSTI correlations · VXX correlations
