CISS vs HHS: Correlation
How closely do C3is Inc. (CISS) and Harte Hanks, Inc. (HHS) trade together? Their weekly returns over three years give a correlation of 0.73, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CISS and HHS?
On 3 years of weekly data the CISS/HHS correlation comes out at 0.73, strong. Recent behaviour matches the longer record: 0.79 over 1 year against 0.73 over 3. The 5-year figure is n/a, and annualized covariance runs at 102750.8 %².
Within CISS's tracked universe of 42 assets, HHS comes in at #7 by 3-year correlation. The last year tells two different stories: HHS led by 119.4 percentage points, -99.5% for CISS against +19.9% for HHS. Note the risk asymmetry: CISS runs 31.2 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 HHS: side by side
| CISS (C3is Inc.) | HHS (Harte Hanks, Inc.) | |
|---|---|---|
| 1-year return | -99.5% | +19.9% |
| 5-year return | n/a | -33.4% |
| Volatility (ann.) | 2098.5% | 67.2% |
| Beta vs S&P 500 | 2.24 | 0.84 |
| Max drawdown (3Y) | -100.0% | -77.2% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CISS | HHS |
|---|---|---|
| 2022 | – | +53.8% |
| 2023 | – | -41.9% |
| 2024 | -98.9% | -24.2% |
| 2025 | -97.3% | -41.6% |
| 2026 | -93.4% | +43.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CISS and HHS good diversifiers for each other?
To a limited degree. At 0.73 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between CISS and HHS?
The CISS/HHS correlation stands at 0.73 on a 3-year window (1 year: 0.79, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is HHS a good diversifier for CISS?
To a limited degree. At 0.73 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.73 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ciss-vs-hhs.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ciss-vs-hhs/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: CISS correlations · HHS correlations
