FFIV vs NXTC: Correlation
How closely do F5, Inc. (FFIV) and NextCure, Inc. (NXTC) trade together? Their weekly returns over three years give a correlation of -0.20, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FFIV and NXTC?
On 3 years of weekly data the FFIV/NXTC correlation comes out at -0.20, negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.30) sits close to the 3-year figure. The 5-year figure is -0.13, and annualized covariance runs at -867.1 %².
Within FFIV's tracked universe of 34 assets, NXTC comes in at #25 by 3-year correlation. On 12-month performance FFIV holds a 13.8-point edge, +29.1% against +15.3%. Risk is not evenly split, since NXTC carries 6.0 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.
FFIV vs NXTC: side by side
| FFIV (F5, Inc.) | NXTC (NextCure, Inc.) | |
|---|---|---|
| 1-year return | +29.1% | +15.3% |
| 5-year return | +99.3% | -93.2% |
| Volatility (ann.) | 26.6% | 160.1% |
| Beta vs S&P 500 | 0.77 | 1.18 |
| Max drawdown (3Y) | -34.7% | -94.6% |
| Market cap | $23.2B | – |
| P/E (trailing) | 31.8 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | FFIV | NXTC |
|---|---|---|
| 2022 | -41.4% | -76.5% |
| 2023 | +24.7% | -19.1% |
| 2024 | +40.5% | -32.4% |
| 2025 | +1.5% | +53.4% |
| 2026 | +60.7% | -57.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FFIV and NXTC good diversifiers for each other?
Yes: at -0.20, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between FFIV and NXTC?
As of 2026-08-27, the correlation of weekly returns between FFIV and NXTC is -0.20 over 3 years, -0.30 over 1 year and -0.13 over 5 years.
Is NXTC a good diversifier for FFIV?
Yes: at -0.20, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.20 mean?
A reading of -0.20 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/ffiv-vs-nxtc.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/ffiv-vs-nxtc/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: FFIV correlations · NXTC correlations
