ADT vs CET: Correlation
ADT Inc. (ADT) and Central Securities Corporation (CET) show a moderate relationship: their 3-year correlation of weekly returns is 0.49.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ADT and CET?
Over the past 3 years, ADT and CET moved with a correlation of 0.49, which is moderate. The link has tightened recently: the 1-year correlation (0.61) runs above the 3-year figure (0.49). Over 5 years the correlation is 0.53, and the annualized covariance of weekly returns is 188.5 %².
In ADT's tracked universe of 10 assets, CET sits right near the top at #2. The last year tells two different stories: CET led by 28.0 percentage points, -12.3% for ADT against +15.7% for CET. One caveat on sizing: ADT is 2.4 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.
ADT vs CET: side by side
| ADT (ADT Inc.) | CET (Central Securities Corporation) | |
|---|---|---|
| 1-year return | -12.3% | +15.7% |
| 5-year return | +1.2% | +73.3% |
| Volatility (ann.) | 30.1% | 12.8% |
| Beta vs S&P 500 | 0.85 | 0.78 |
| Max drawdown (3Y) | -27.1% | -15.4% |
| Market cap | $5.4B | – |
| P/E (trailing) | 10.4 | 7.3 |
| Dividend yield | 2.96% | 5.03% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ADT | CET |
|---|---|---|
| 2022 | +9.8% | -19.7% |
| 2023 | -23.1% | +19.2% |
| 2024 | +4.5% | +26.8% |
| 2025 | +20.0% | +17.2% |
| 2026 | -6.0% | +8.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ADT and CET good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.49 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between ADT and CET?
The ADT/CET correlation stands at 0.49 on a 3-year window (1 year: 0.61, 5 years: 0.53), computed from weekly returns as of 2026-08-27.
Is CET a good diversifier for ADT?
Yes, to a useful degree: a correlation of 0.49 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.49 mean?
A reading of 0.49 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/adt-vs-cet.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/adt-vs-cet/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: ADT correlations · CET correlations
