STM vs VXZ: Correlation
How closely do STMicroelectronics N.V. (STM) 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 -0.33, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are STM and VXZ?
Over the past 3 years, STM and VXZ moved with a correlation of -0.33, which is negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.25 over 1 year against -0.33 over 3. Over 5 years the correlation is -0.42, and the annualized covariance of weekly returns is -397.9 %².
Among the 15 assets we track against STM, VXZ sits near the bottom by co-movement, at rank #13. Correlation aside, the last 12 months split them widely, with STM ahead by 107.1 points (+91.0% versus -16.1%). One caveat on sizing: STM is 1.8 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.
STM vs VXZ: side by side
| STM (STMicroelectronics N.V.) | VXZ (iPath Series B S&P 500 VIX Mid-Term Futures ETN) | |
|---|---|---|
| 1-year return | +91.0% | -16.1% |
| 5-year return | +19.4% | -53.1% |
| Volatility (ann.) | 46.5% | 25.6% |
| Beta vs S&P 500 | 1.62 | -1.31 |
| Max drawdown (3Y) | -64.6% | -36.4% |
| Market cap | $45.8B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.72% | – |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | STM | VXZ |
|---|---|---|
| 2022 | -26.8% | +0.5% |
| 2023 | +41.7% | -44.0% |
| 2024 | -49.7% | -12.7% |
| 2025 | +5.3% | +5.7% |
| 2026 | +98.7% | -10.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are STM and VXZ good diversifiers for each other?
Yes: at -0.33, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between STM and VXZ?
Using weekly returns as of 2026-08-27: -0.33 over 3 years, with -0.25 over the last year and -0.42 over 5 years.
Is VXZ a good diversifier for STM?
Yes: at -0.33, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.33 mean?
On the −1 to +1 scale, -0.33 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/stm-vs-vxz.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/stm-vs-vxz/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: STM correlations · VXZ correlations
