CMTL vs RKLB: Correlation
Measured on weekly returns over the past three years, Comtech Telecommunications Corp. (CMTL) and Rocket Lab Corporation (RKLB) carry a correlation of 0.33, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CMTL and RKLB?
On 3 years of weekly data the CMTL/RKLB correlation comes out at 0.33, moderate. Recent behaviour matches the longer record: 0.25 over 1 year against 0.33 over 3. The 5-year figure is 0.33, and annualized covariance runs at 2809.6 %².
By 3-year correlation, RKLB places #6 of the 11 assets tracked against CMTL. Their recent paths diverged sharply: over the last 12 months RKLB outperformed by 59.4 percentage points (-13.4% for CMTL against +46.0% for RKLB).
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.
CMTL vs RKLB: side by side
| CMTL (Comtech Telecommunications Corp.) | RKLB (Rocket Lab Corporation) | |
|---|---|---|
| 1-year return | -13.4% | +46.0% |
| 5-year return | -92.9% | +573.3% |
| Volatility (ann.) | 100.4% | 85.6% |
| Beta vs S&P 500 | 1.44 | 2.58 |
| Max drawdown (3Y) | -90.2% | -61.0% |
| Market cap | $0.1B | $43.2B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CMTL | RKLB |
|---|---|---|
| 2022 | -47.1% | -69.3% |
| 2023 | -30.0% | +46.7% |
| 2024 | -52.4% | +360.6% |
| 2025 | +31.9% | +173.9% |
| 2026 | -66.9% | -3.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CMTL and RKLB good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.33 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between CMTL and RKLB?
As of 2026-08-27, the correlation of weekly returns between CMTL and RKLB is 0.33 over 3 years, 0.25 over 1 year and 0.33 over 5 years.
Is RKLB a good diversifier for CMTL?
Yes, to a useful degree: a correlation of 0.33 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.33 mean?
On the −1 to +1 scale, 0.33 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/cmtl-vs-rklb.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/cmtl-vs-rklb/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CMTL correlations · RKLB correlations
