SRTA vs VXZ: Correlation
Measured on weekly returns over the past three years, Strata Critical Medical, Inc. (SRTA) and iPath Series B S&P 500 VIX Mid-Term Futures ETN (VXZ) carry a correlation of -0.35, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SRTA and VXZ?
Across a 3-year window, the weekly returns of SRTA and VXZ correlate at -0.35, negative, meaning they tend to move in opposite directions. The past 12 months show a tighter link (-0.23) than the 3-year average (-0.35). Stretching to 5 years gives -0.37, with an annualized covariance of -618.0 %².
VXZ is close to the least connected end of SRTA's tracked universe, ranking #10 of 11. The last year tells two different stories: SRTA led by 50.8 percentage points, +34.7% for SRTA against -16.1% for VXZ. Risk is not evenly split, since SRTA carries 2.7 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.
SRTA vs VXZ: side by side
| SRTA (Strata Critical Medical, Inc.) | VXZ (iPath Series B S&P 500 VIX Mid-Term Futures ETN) | |
|---|---|---|
| 1-year return | +34.7% | -16.1% |
| 5-year return | -28.6% | -53.1% |
| Volatility (ann.) | 69.8% | 25.6% |
| Beta vs S&P 500 | 2.02 | -1.31 |
| Max drawdown (3Y) | -48.9% | -36.4% |
| Market cap | $0.5B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | SRTA | VXZ |
|---|---|---|
| 2022 | -59.5% | +0.5% |
| 2023 | -1.4% | -44.0% |
| 2024 | +20.4% | -12.7% |
| 2025 | +13.2% | +5.7% |
| 2026 | +28.3% | -10.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SRTA and VXZ good diversifiers for each other?
Yes. With a correlation of -0.35, SRTA and VXZ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between SRTA and VXZ?
Using weekly returns as of 2026-08-27: -0.35 over 3 years, with -0.23 over the last year and -0.37 over 5 years.
Is VXZ a good diversifier for SRTA?
Yes. With a correlation of -0.35, SRTA and VXZ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.35 mean?
On the −1 to +1 scale, -0.35 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/srta-vs-vxz.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/srta-vs-vxz/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: SRTA correlations · VXZ correlations
