OSIS vs VXZ: Correlation
OSI Systems, Inc. (OSIS) and iPath Series B S&P 500 VIX Mid-Term Futures ETN (VXZ) show a negative relationship: their 3-year correlation of weekly returns is -0.42.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are OSIS and VXZ?
Across a 3-year window, the weekly returns of OSIS and VXZ correlate at -0.42, negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.35 over 1 year against -0.42 over 3. Stretching to 5 years gives -0.44, with an annualized covariance of -410.3 %².
VXZ is close to the least connected end of OSIS's tracked universe, ranking #11 of 12. On 12-month performance OSIS holds a 7.6-point edge, -8.5% against -16.1%.
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.
OSIS vs VXZ: side by side
| OSIS (OSI Systems, Inc.) | VXZ (iPath Series B S&P 500 VIX Mid-Term Futures ETN) | |
|---|---|---|
| 1-year return | -8.5% | -16.1% |
| 5-year return | +113.6% | -53.1% |
| Volatility (ann.) | 38.1% | 25.6% |
| Beta vs S&P 500 | 1.39 | -1.31 |
| Max drawdown (3Y) | -36.2% | -36.4% |
| Market cap | $3.4B | – |
| P/E (trailing) | 23.6 | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | OSIS | VXZ |
|---|---|---|
| 2022 | -14.7% | +0.5% |
| 2023 | +62.3% | -44.0% |
| 2024 | +29.7% | -12.7% |
| 2025 | +52.3% | +5.7% |
| 2026 | -17.3% | -10.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are OSIS and VXZ good diversifiers for each other?
By historical standards, yes. A correlation of -0.42 means the two rarely move for the same reasons.
FAQ
What is the correlation between OSIS and VXZ?
As of 2026-08-27, the correlation of weekly returns between OSIS and VXZ is -0.42 over 3 years, -0.35 over 1 year and -0.44 over 5 years.
Is VXZ a good diversifier for OSIS?
By historical standards, yes. A correlation of -0.42 means the two rarely move for the same reasons.
What does a correlation of -0.42 mean?
A reading of -0.42 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/osis-vs-vxz.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/osis-vs-vxz/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: OSIS correlations · VXZ correlations
