CISS vs NSYS: Correlation
Measured on weekly returns over the past three years, C3is Inc. (CISS) and Nortech Systems Incorporated (NSYS) carry a correlation of -0.25, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CISS and NSYS?
On 3 years of weekly data the CISS/NSYS correlation comes out at -0.25, negative, meaning they tend to move in opposite directions. The past 12 months show a weaker link (-0.43) than the 3-year average (-0.25). The 5-year figure is n/a, and annualized covariance runs at -28005.3 %².
Within CISS's tracked universe of 42 assets, NSYS comes in at #26 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months NSYS outperformed by 136.1 percentage points (-99.5% for CISS against +36.6% for NSYS). Note the risk asymmetry: CISS runs 40.0 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.
CISS vs NSYS: side by side
| CISS (C3is Inc.) | NSYS (Nortech Systems Incorporated) | |
|---|---|---|
| 1-year return | -99.5% | +36.6% |
| 5-year return | n/a | -4.7% |
| Volatility (ann.) | 2098.5% | 52.5% |
| Beta vs S&P 500 | 2.24 | 0.23 |
| Max drawdown (3Y) | -100.0% | -62.0% |
| Market cap | – | – |
| P/E (trailing) | – | 34.2 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CISS | NSYS |
|---|---|---|
| 2022 | – | +18.4% |
| 2023 | – | -23.1% |
| 2024 | -98.9% | +9.2% |
| 2025 | -97.3% | -27.8% |
| 2026 | -93.4% | +65.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CISS and NSYS good diversifiers for each other?
By historical standards, yes. A correlation of -0.25 means the two rarely move for the same reasons.
FAQ
What is the correlation between CISS and NSYS?
Using weekly returns as of 2026-08-27: -0.25 over 3 years, with -0.43 over the last year and n/a over 5 years.
Is NSYS a good diversifier for CISS?
By historical standards, yes. A correlation of -0.25 means the two rarely move for the same reasons.
What does a correlation of -0.25 mean?
A reading of -0.25 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/ciss-vs-nsys.json
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Related comparisons
Hubs: CISS correlations · NSYS correlations
