CISS vs QTRX: Correlation
How closely do C3is Inc. (CISS) and Quanterix Corporation (QTRX) trade together? Their weekly returns over three years give a correlation of -0.27, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CISS and QTRX?
Over the past 3 years, CISS and QTRX moved with a correlation of -0.27, which is negative, meaning they tend to move in opposite directions. The link has loosened recently: the 1-year correlation (-0.42) runs below the 3-year figure (-0.27). Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is -41468.2 %².
Within CISS's tracked universe of 42 assets, QTRX comes in at #29 by 3-year correlation. Correlation aside, the last 12 months split them widely, with QTRX ahead by 56.8 points (-99.5% versus -42.7%). Note the risk asymmetry: CISS runs 28.7 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 QTRX: side by side
| CISS (C3is Inc.) | QTRX (Quanterix Corporation) | |
|---|---|---|
| 1-year return | -99.5% | -42.7% |
| 5-year return | n/a | -94.7% |
| Volatility (ann.) | 2098.5% | 73.1% |
| Beta vs S&P 500 | 2.24 | 1.18 |
| Max drawdown (3Y) | -100.0% | -91.6% |
| Market cap | – | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CISS | QTRX |
|---|---|---|
| 2022 | – | -67.3% |
| 2023 | – | +97.4% |
| 2024 | -98.9% | -61.1% |
| 2025 | -97.3% | -40.2% |
| 2026 | -93.4% | -58.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CISS and QTRX good diversifiers for each other?
Yes. With a correlation of -0.27, CISS and QTRX have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between CISS and QTRX?
The CISS/QTRX correlation stands at -0.27 on a 3-year window (1 year: -0.42, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is QTRX a good diversifier for CISS?
Yes. With a correlation of -0.27, CISS and QTRX have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.27 mean?
A reading of -0.27 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: CISS correlations · QTRX correlations
