BOXL vs CISS: Correlation
How closely do Boxlight Corporation (BOXL) and C3is Inc. (CISS) trade together? Their weekly returns over three years give a correlation of 0.50, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BOXL and CISS?
Over the past 3 years, BOXL and CISS moved with a correlation of 0.50, which is moderate. Lately the two have moved closer together, with the 1-year correlation at 0.66 versus 0.50 over 3 years. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is 138614.6 %².
Among the 10 assets we track against BOXL, CISS ranks #4 by 3-year correlation. The trailing year gives BOXL the advantage: -90.8% versus -99.5%, a 8.7-point spread. Risk is not evenly split, since CISS carries 15.9 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.
BOXL vs CISS: side by side
| BOXL (Boxlight Corporation) | CISS (C3is Inc.) | |
|---|---|---|
| 1-year return | -90.8% | -99.5% |
| 5-year return | -99.8% | n/a |
| Volatility (ann.) | 131.7% | 2098.5% |
| Beta vs S&P 500 | 1.16 | 2.24 |
| Max drawdown (3Y) | -99.3% | -100.0% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BOXL | CISS |
|---|---|---|
| 2022 | -77.5% | – |
| 2023 | -57.0% | – |
| 2024 | -64.3% | -98.9% |
| 2025 | -85.2% | -97.3% |
| 2026 | -40.2% | -93.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BOXL and CISS good diversifiers for each other?
Somewhat, no more. With 0.50 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between BOXL and CISS?
As of 2026-08-27, the correlation of weekly returns between BOXL and CISS is 0.50 over 3 years, 0.66 over 1 year and n/a over 5 years.
Is CISS a good diversifier for BOXL?
Somewhat, no more. With 0.50 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.50 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.
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Related comparisons
Hubs: BOXL correlations · CISS correlations
