PTC vs VXX: Correlation
Measured on weekly returns over the past three years, PTC Inc. (PTC) and iPath Series B S&P 500 VIX Short-Term Futures ETN (VXX) carry a correlation of -0.38, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are PTC and VXX?
On 3 years of weekly data the PTC/VXX correlation comes out at -0.38, negative, meaning they tend to move in opposite directions. The link has tightened recently: the 1-year correlation (-0.16) runs above the 3-year figure (-0.38). The 5-year figure is -0.40, and annualized covariance runs at -673.3 %².
VXX is close to the least connected end of PTC's tracked universe, ranking #30 of 32. Their recent paths diverged sharply: over the last 12 months PTC outperformed by 23.1 percentage points (-26.6% for PTC against -49.7% for VXX). One caveat on sizing: VXX is 2.1 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.
PTC vs VXX: side by side
| PTC (PTC Inc.) | VXX (iPath Series B S&P 500 VIX Short-Term Futures ETN) | |
|---|---|---|
| 1-year return | -26.6% | -49.7% |
| 5-year return | +20.0% | -95.6% |
| Volatility (ann.) | 28.8% | 60.9% |
| Beta vs S&P 500 | 1.02 | -3.31 |
| Max drawdown (3Y) | -48.1% | -83.3% |
| Market cap | $17.2B | – |
| P/E (trailing) | 14.7 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | PTC | VXX |
|---|---|---|
| 2022 | -0.9% | -23.8% |
| 2023 | +45.8% | -72.5% |
| 2024 | +5.1% | -26.2% |
| 2025 | -5.3% | -42.2% |
| 2026 | -8.8% | -31.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are PTC and VXX good diversifiers for each other?
By historical standards, yes. A correlation of -0.38 means the two rarely move for the same reasons.
FAQ
What is the correlation between PTC and VXX?
The PTC/VXX correlation stands at -0.38 on a 3-year window (1 year: -0.16, 5 years: -0.40), computed from weekly returns as of 2026-08-27.
Is VXX a good diversifier for PTC?
By historical standards, yes. A correlation of -0.38 means the two rarely move for the same reasons.
What does a correlation of -0.38 mean?
A reading of -0.38 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/ptc-vs-vxx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ptc-vs-vxx/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: PTC correlations · VXX correlations
