FEMY vs NXP: Correlation
How closely do Femasys Inc. (FEMY) and Nuveen Select Tax Free Income Portfolio (NXP) trade together? Their weekly returns over three years give a correlation of -0.37, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FEMY and NXP?
Across a 3-year window, the weekly returns of FEMY and NXP correlate at -0.37, negative, meaning they tend to move in opposite directions. The past 12 months show a tighter link (-0.20) than the 3-year average (-0.37). Stretching to 5 years gives -0.24, with an annualized covariance of -1714.9 %².
Among the 32 assets we track against FEMY, NXP sits near the bottom by co-movement, at rank #30. The last year tells two different stories: NXP led by 67.5 percentage points, -61.2% for FEMY against +6.3% for NXP. Note the risk asymmetry: FEMY runs 56.0 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.
FEMY vs NXP: side by side
| FEMY (Femasys Inc.) | NXP (Nuveen Select Tax Free Income Portfolio) | |
|---|---|---|
| 1-year return | -61.2% | +6.3% |
| 5-year return | -98.0% | +0.3% |
| Volatility (ann.) | 509.3% | 9.1% |
| Beta vs S&P 500 | -0.49 | 0.11 |
| Max drawdown (3Y) | -97.2% | -9.1% |
| Market cap | – | – |
| P/E (trailing) | – | 24.9 |
| Dividend yield | 0.00% | 4.45% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FEMY | NXP |
|---|---|---|
| 2022 | -76.9% | -9.5% |
| 2023 | +8.3% | +10.7% |
| 2024 | +12.8% | +6.9% |
| 2025 | -47.6% | -2.7% |
| 2026 | -75.8% | +3.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FEMY and NXP good diversifiers for each other?
Yes. With a correlation of -0.37, FEMY and NXP have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between FEMY and NXP?
Using weekly returns as of 2026-08-27: -0.37 over 3 years, with -0.20 over the last year and -0.24 over 5 years.
Is NXP a good diversifier for FEMY?
Yes. With a correlation of -0.37, FEMY and NXP have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
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/femy-vs-nxp.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/femy-vs-nxp/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: FEMY correlations · NXP correlations
