CTM vs SES: Correlation
How closely do Castellum, Inc. (CTM) and SES AI Corporation (SES) trade together? Their weekly returns over three years give a correlation of 0.53, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CTM and SES?
Across a 3-year window, the weekly returns of CTM and SES correlate at 0.53, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.20 versus 0.53 over 3 years. Stretching to 5 years gives 0.49, with an annualized covariance of 23281.9 %².
By 3-year correlation, SES places #4 of the 10 assets tracked against CTM. On 12-month performance CTM holds a 10.6-point edge, -40.4% against -51.0%. Note the risk asymmetry: SES runs 2.0 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.
CTM vs SES: side by side
| CTM (Castellum, Inc.) | SES (SES AI Corporation) | |
|---|---|---|
| 1-year return | -40.4% | -51.0% |
| 5-year return | n/a | -94.5% |
| Volatility (ann.) | 150.3% | 294.5% |
| Beta vs S&P 500 | 1.19 | 2.43 |
| Max drawdown (3Y) | -79.1% | -89.7% |
| Market cap | $0.1B | $0.2B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CTM | SES |
|---|---|---|
| 2022 | – | -68.3% |
| 2023 | -76.3% | -41.9% |
| 2024 | +571.1% | +19.7% |
| 2025 | -54.9% | -17.8% |
| 2026 | -32.7% | -69.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CTM and SES good diversifiers for each other?
Somewhat, no more. With 0.53 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between CTM and SES?
The CTM/SES correlation stands at 0.53 on a 3-year window (1 year: 0.20, 5 years: 0.49), computed from weekly returns as of 2026-08-27.
Is SES a good diversifier for CTM?
Somewhat, no more. With 0.53 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.53 mean?
A reading of 0.53 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/ctm-vs-ses.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/ctm-vs-ses/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: CTM correlations · SES correlations
