RGEN vs VXZ: Correlation
Repligen Corporation (RGEN) 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 -0.31.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RGEN and VXZ?
Over the past 3 years, RGEN and VXZ moved with a correlation of -0.31, which is negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.39) sits close to the 3-year figure. Over 5 years the correlation is -0.30, and the annualized covariance of weekly returns is -386.7 %².
Among the 17 assets we track against RGEN, VXZ sits near the bottom by co-movement, at rank #17. Correlation aside, the last 12 months split them widely, with RGEN ahead by 69.2 points (+53.1% versus -16.1%). Risk is not evenly split, since RGEN carries 1.9 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.
RGEN vs VXZ: side by side
| RGEN (Repligen Corporation) | VXZ (iPath Series B S&P 500 VIX Mid-Term Futures ETN) | |
|---|---|---|
| 1-year return | +53.1% | -16.1% |
| 5-year return | -35.6% | -53.1% |
| Volatility (ann.) | 49.5% | 25.6% |
| Beta vs S&P 500 | 1.35 | -1.31 |
| Max drawdown (3Y) | -50.6% | -36.4% |
| Market cap | $10.3B | – |
| P/E (trailing) | 252.8 | – |
| Dividend yield | 0.00% | – |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | RGEN | VXZ |
|---|---|---|
| 2022 | -36.1% | +0.5% |
| 2023 | +6.2% | -44.0% |
| 2024 | -19.9% | -12.7% |
| 2025 | +13.8% | +5.7% |
| 2026 | +11.1% | -10.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RGEN and VXZ good diversifiers for each other?
Yes: at -0.31, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between RGEN and VXZ?
As of 2026-08-27, the correlation of weekly returns between RGEN and VXZ is -0.31 over 3 years, -0.39 over 1 year and -0.30 over 5 years.
Is VXZ a good diversifier for RGEN?
Yes: at -0.31, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.31 mean?
A reading of -0.31 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/rgen-vs-vxz.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/rgen-vs-vxz/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: RGEN correlations · VXZ correlations
