ICLR vs VXX: Correlation
Measured on weekly returns over the past three years, ICON plc (ICLR) and iPath Series B S&P 500 VIX Short-Term Futures ETN (VXX) carry a correlation of -0.28, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ICLR and VXX?
Across a 3-year window, the weekly returns of ICLR and VXX correlate at -0.28, negative, meaning they tend to move in opposite directions. Recent behaviour matches the longer record: -0.22 over 1 year against -0.28 over 3. Stretching to 5 years gives -0.34, with an annualized covariance of -886.2 %².
Out of 11 assets tracked against ICLR, VXX lands near the bottom at #9. Correlation aside, the last 12 months split them widely, with ICLR ahead by 47.2 points (-2.5% versus -49.7%).
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.
ICLR vs VXX: side by side
| ICLR (ICON plc) | VXX (iPath Series B S&P 500 VIX Short-Term Futures ETN) | |
|---|---|---|
| 1-year return | -2.5% | -49.7% |
| 5-year return | -33.7% | -95.6% |
| Volatility (ann.) | 51.4% | 60.9% |
| Beta vs S&P 500 | 1.03 | -3.31 |
| Max drawdown (3Y) | -76.9% | -83.3% |
| Market cap | $13.1B | – |
| P/E (trailing) | 265.2 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ICLR | VXX |
|---|---|---|
| 2022 | -37.3% | -23.8% |
| 2023 | +45.7% | -72.5% |
| 2024 | -25.9% | -26.2% |
| 2025 | -13.1% | -42.2% |
| 2026 | -6.9% | -31.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ICLR and VXX good diversifiers for each other?
Yes. With a correlation of -0.28, ICLR and VXX have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between ICLR and VXX?
Using weekly returns as of 2026-08-27: -0.28 over 3 years, with -0.22 over the last year and -0.34 over 5 years.
Is VXX a good diversifier for ICLR?
Yes. With a correlation of -0.28, ICLR and VXX have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.28 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/iclr-vs-vxx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/iclr-vs-vxx/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ICLR correlations · VXX correlations
