NSPR vs PVLA: Correlation
How closely do InspireMD Inc. (NSPR) and Palvella Therapeutics, Inc. (PVLA) trade together? Their weekly returns over three years give a correlation of 0.41, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NSPR and PVLA?
Across a 3-year window, the weekly returns of NSPR and PVLA correlate at 0.41, moderate. The link has loosened recently: the 1-year correlation (0.10) runs below the 3-year figure (0.41). Stretching to 5 years gives 0.32, with an annualized covariance of 2522.2 %².
Few assets follow NSPR as closely as PVLA, which ranks #1 of 13 tracked partners. Their recent paths diverged sharply: over the last 12 months PVLA outperformed by 229.9 percentage points (-63.6% for NSPR against +166.3% for PVLA). Note the risk asymmetry: PVLA runs 1.8 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
NSPR vs PVLA: side by side
| NSPR (InspireMD Inc.) | PVLA (Palvella Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | -63.6% | +166.3% |
| 5-year return | -80.3% | -62.3% |
| Volatility (ann.) | 58.4% | 105.3% |
| Beta vs S&P 500 | 0.05 | 0.24 |
| Max drawdown (3Y) | -82.8% | -77.6% |
| Market cap | – | $2.2B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | NSPR | PVLA |
|---|---|---|
| 2022 | -71.5% | -72.5% |
| 2023 | +226.7% | -82.5% |
| 2024 | -6.4% | -17.6% |
| 2025 | -32.3% | +772.2% |
| 2026 | -50.1% | +43.6% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NSPR and PVLA good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.41 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between NSPR and PVLA?
Using weekly returns as of 2026-08-27: 0.41 over 3 years, with 0.10 over the last year and 0.32 over 5 years.
Is PVLA a good diversifier for NSPR?
Yes, to a useful degree: a correlation of 0.41 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.41 mean?
A reading of 0.41 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/nspr-vs-pvla.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/nspr-vs-pvla/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: NSPR correlations · PVLA correlations
