CDTG vs DAL: Correlation
CDT Environmental Technology Investment Holdings Limited (CDTG) and Delta Air Lines (DAL) show a negative relationship: their 3-year correlation of weekly returns is -0.20.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CDTG and DAL?
Over the past 3 years, CDTG and DAL moved with a correlation of -0.20, which is negative, meaning they tend to move in opposite directions. Lately the two have moved closer together, with the 1-year correlation at -0.08 versus -0.20 over 3 years. Over 5 years the correlation is n/a, and the annualized covariance of weekly returns is -1247.9 %².
Among the 34 assets we track against CDTG, DAL ranks #13 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months DAL outperformed by 126.5 percentage points (-92.6% for CDTG against +33.9% for DAL). One caveat on sizing: CDTG is 4.3 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
CDTG vs DAL: side by side
| CDTG (CDT Environmental Technology Investment Holdings Limited) | DAL (Delta Air Lines) | |
|---|---|---|
| 1-year return | -92.6% | +33.9% |
| 5-year return | n/a | +110.6% |
| Volatility (ann.) | 160.6% | 37.1% |
| Beta vs S&P 500 | 0.42 | 1.17 |
| Max drawdown (3Y) | -99.2% | -47.9% |
| Market cap | – | – |
| P/E (trailing) | – | 13.8 |
| Dividend yield | 0.00% | 0.94% |
| Sector / category | US Listed | Industrials |
Year-by-year returns
| Year | CDTG | DAL |
|---|---|---|
| 2022 | – | -15.9% |
| 2023 | – | +23.0% |
| 2024 | – | +52.0% |
| 2025 | -92.2% | +16.1% |
| 2026 | -87.0% | +17.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CDTG and DAL good diversifiers for each other?
Yes. With a correlation of -0.20, CDTG and DAL have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between CDTG and DAL?
The CDTG/DAL correlation stands at -0.20 on a 3-year window (1 year: -0.08, 5 years: n/a), computed from weekly returns as of 2026-08-27.
Is DAL a good diversifier for CDTG?
Yes. With a correlation of -0.20, CDTG and DAL have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of -0.20 mean?
A reading of -0.20 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/cdtg-vs-dal.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/cdtg-vs-dal/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: CDTG correlations · DAL correlations
