NSSC vs XRTX: Correlation
Measured on weekly returns over the past three years, NAPCO Security Technologies, Inc. (NSSC) and XORTX Therapeutics Inc. (XRTX) carry a correlation of -0.24, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NSSC and XRTX?
On 3 years of weekly data the NSSC/XRTX correlation comes out at -0.24, negative, meaning they tend to move in opposite directions. The link has tightened recently: the 1-year correlation (-0.11) runs above the 3-year figure (-0.24). The 5-year figure is -0.14, and annualized covariance runs at -1560.2 %².
XRTX is close to the least connected end of NSSC's tracked universe, ranking #11 of 14. Correlation aside, the last 12 months split them widely, with NSSC ahead by 31.6 points (-6.8% versus -38.4%). Note the risk asymmetry: XRTX runs 2.5 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.
NSSC vs XRTX: side by side
| NSSC (NAPCO Security Technologies, Inc.) | XRTX (XORTX Therapeutics Inc.) | |
|---|---|---|
| 1-year return | -6.8% | -38.4% |
| 5-year return | +91.1% | -99.9% |
| Volatility (ann.) | 51.3% | 129.2% |
| Beta vs S&P 500 | 1.46 | 0.23 |
| Max drawdown (3Y) | -65.4% | -99.4% |
| Market cap | $1.3B | – |
| P/E (trailing) | 29.6 | – |
| Dividend yield | 1.62% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | NSSC | XRTX |
|---|---|---|
| 2022 | +10.0% | -60.6% |
| 2023 | +25.6% | -96.5% |
| 2024 | +5.0% | -51.1% |
| 2025 | +19.2% | -50.3% |
| 2026 | -14.7% | -13.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NSSC and XRTX good diversifiers for each other?
By historical standards, yes. A correlation of -0.24 means the two rarely move for the same reasons.
FAQ
What is the correlation between NSSC and XRTX?
Using weekly returns as of 2026-08-27: -0.24 over 3 years, with -0.11 over the last year and -0.14 over 5 years.
Is XRTX a good diversifier for NSSC?
By historical standards, yes. A correlation of -0.24 means the two rarely move for the same reasons.
What does a correlation of -0.24 mean?
On the −1 to +1 scale, -0.24 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/nssc-vs-xrtx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/nssc-vs-xrtx/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: NSSC correlations · XRTX correlations
