CISS vs DFSC: Correlation
How closely do C3is Inc. (CISS) and DEFSEC Technologies Inc. (DFSC) trade together? Their weekly returns over three years give a correlation of 0.51, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CISS and DFSC?
On 3 years of weekly data the CISS/DFSC correlation comes out at 0.51, moderate. The past 12 months show a tighter link (0.74) than the 3-year average (0.51). The 5-year figure is n/a, and annualized covariance runs at 163451.2 %².
By 3-year correlation, DFSC places #9 of the 42 assets tracked against CISS. Their recent paths diverged sharply: over the last 12 months DFSC outperformed by 55.4 percentage points (-99.5% for CISS against -44.1% for DFSC). Risk is not evenly split, since CISS carries 13.8 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.
CISS vs DFSC: side by side
| CISS (C3is Inc.) | DFSC (DEFSEC Technologies Inc.) | |
|---|---|---|
| 1-year return | -99.5% | -44.1% |
| 5-year return | n/a | -100.0% |
| Volatility (ann.) | 2098.5% | 152.6% |
| Beta vs S&P 500 | 2.24 | 0.90 |
| Max drawdown (3Y) | -100.0% | -99.9% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CISS | DFSC |
|---|---|---|
| 2022 | – | -96.2% |
| 2023 | – | -65.1% |
| 2024 | -98.9% | -92.2% |
| 2025 | -97.3% | -88.4% |
| 2026 | -93.4% | +9.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CISS and DFSC good diversifiers for each other?
Only partially. A correlation of 0.51 means CISS and DFSC share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between CISS and DFSC?
The CISS/DFSC correlation stands at 0.51 on a 3-year window (1 year: 0.74, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is DFSC a good diversifier for CISS?
Only partially. A correlation of 0.51 means CISS and DFSC share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.51 mean?
On the −1 to +1 scale, 0.51 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/ciss-vs-dfsc.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ciss-vs-dfsc/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: CISS correlations · DFSC correlations
