BOLD vs VXZ: Correlation
Boundless Bio, Inc. (BOLD) 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 -0.37.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BOLD and VXZ?
Over the past 3 years, BOLD and VXZ moved with a correlation of -0.37, which is negative, meaning they tend to move in opposite directions. Lately the two have moved closer together, with the 1-year correlation at -0.25 versus -0.37 over 3 years. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is -867.8 %².
VXZ is close to the least connected end of BOLD's tracked universe, ranking #18 of 18. Their recent paths diverged sharply: over the last 12 months BOLD outperformed by 167.0 percentage points (+150.9% for BOLD against -16.1% for VXZ). Risk is not evenly split, since BOLD carries 3.6 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.
BOLD vs VXZ: side by side
| BOLD (Boundless Bio, Inc.) | VXZ (iPath Series B S&P 500 VIX Mid-Term Futures ETN) | |
|---|---|---|
| 1-year return | +150.9% | -16.1% |
| 5-year return | n/a | -53.1% |
| Volatility (ann.) | 90.9% | 25.6% |
| Beta vs S&P 500 | 1.60 | -1.31 |
| Max drawdown (3Y) | -92.9% | -36.4% |
| Market cap | $0.1B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BOLD | VXZ |
|---|---|---|
| 2022 | – | +0.5% |
| 2023 | – | -44.0% |
| 2024 | – | -12.7% |
| 2025 | -58.6% | +5.7% |
| 2026 | +138.3% | -10.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BOLD and VXZ good diversifiers for each other?
Yes: at -0.37, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between BOLD and VXZ?
As of 2026-08-27, the correlation of weekly returns between BOLD and VXZ is -0.37 over 3 years, -0.25 over 1 year and n/a over 5 years.
Is VXZ a good diversifier for BOLD?
Yes: at -0.37, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.37 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/bold-vs-vxz.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/bold-vs-vxz/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BOLD correlations · VXZ correlations
