NAII vs ZNTL: Correlation
Natural Alternatives International, Inc. (NAII) and Zentalis Pharmaceuticals, Inc. (ZNTL) show a weak relationship: their 3-year correlation of weekly returns is 0.29.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NAII and ZNTL?
On 3 years of weekly data the NAII/ZNTL correlation comes out at 0.29, weak. Recent behaviour matches the longer record: 0.38 over 1 year against 0.29 over 3. The 5-year figure is 0.25, and annualized covariance runs at 2257.1 %².
ZNTL is one of the assets that tracks NAII most closely: it ranks #2 out of the 14 assets we track against NAII. The last year tells two different stories: ZNTL led by 149.2 percentage points, -36.0% for NAII against +113.2% for ZNTL. Note the risk asymmetry: ZNTL runs 3.2 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.
NAII vs ZNTL: side by side
| NAII (Natural Alternatives International, Inc.) | ZNTL (Zentalis Pharmaceuticals, Inc.) | |
|---|---|---|
| 1-year return | -36.0% | +113.2% |
| 5-year return | -85.1% | -94.1% |
| Volatility (ann.) | 49.2% | 159.7% |
| Beta vs S&P 500 | 0.09 | 2.82 |
| Max drawdown (3Y) | -71.7% | -96.2% |
| Market cap | – | $0.4B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | NAII | ZNTL |
|---|---|---|
| 2022 | -33.7% | -76.0% |
| 2023 | -22.2% | -24.8% |
| 2024 | -34.0% | -80.0% |
| 2025 | -16.9% | -55.4% |
| 2026 | -36.0% | +187.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NAII and ZNTL good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.29 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between NAII and ZNTL?
As of 2026-08-27, the correlation of weekly returns between NAII and ZNTL is 0.29 over 3 years, 0.38 over 1 year and 0.25 over 5 years.
Is ZNTL a good diversifier for NAII?
Yes, to a useful degree: a correlation of 0.29 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.29 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/naii-vs-zntl.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/naii-vs-zntl/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: NAII correlations · ZNTL correlations
