STRO vs VXX: Correlation
Sutro Biopharma, Inc. (STRO) and iPath Series B S&P 500 VIX Short-Term Futures ETN (VXX) show a negative relationship: their 3-year correlation of weekly returns is -0.29.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are STRO and VXX?
On 3 years of weekly data the STRO/VXX correlation comes out at -0.29, negative, meaning they tend to move in opposite directions. Lately the two have moved closer together, with the 1-year correlation at 0.01 versus -0.29 over 3 years. The 5-year figure is -0.25, and annualized covariance runs at -2019.4 %².
Among the 13 assets we track against STRO, VXX sits near the bottom by co-movement, at rank #11. Correlation aside, the last 12 months split them widely, with STRO ahead by 186.5 points (+136.8% versus -49.7%). Risk is not evenly split, since STRO carries 1.8 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.
STRO vs VXX: side by side
| STRO (Sutro Biopharma, Inc.) | VXX (iPath Series B S&P 500 VIX Short-Term Futures ETN) | |
|---|---|---|
| 1-year return | +136.8% | -49.7% |
| 5-year return | -90.2% | -95.6% |
| Volatility (ann.) | 112.5% | 60.9% |
| Beta vs S&P 500 | 3.52 | -3.31 |
| Max drawdown (3Y) | -90.8% | -83.3% |
| Market cap | $0.4B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | STRO | VXX |
|---|---|---|
| 2022 | -45.7% | -23.8% |
| 2023 | -46.9% | -72.5% |
| 2024 | -57.1% | -26.2% |
| 2025 | -37.1% | -42.2% |
| 2026 | +84.2% | -31.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are STRO 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 STRO and VXX?
Using weekly returns as of 2026-08-27: -0.29 over 3 years, with 0.01 over the last year and -0.25 over 5 years.
Is VXX a good diversifier for STRO?
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/stro-vs-vxx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/stro-vs-vxx/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: STRO correlations · VXX correlations
