T vs TOMZ: Correlation
Measured on weekly returns over the past three years, AT&T (T) and TOMI Environmental Solutions, Inc. (TOMZ) carry a correlation of -0.27, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are T and TOMZ?
Over the past 3 years, T and TOMZ moved with a correlation of -0.27, which is negative, meaning they tend to move in opposite directions. The link has loosened recently: the 1-year correlation (-0.43) runs below the 3-year figure (-0.27). Over 5 years the correlation is -0.06, and the annualized covariance of weekly returns is -416.1 %².
TOMZ is close to the least connected end of T's tracked universe, ranking #32 of 32. Correlation aside, the last 12 months split them widely, with T ahead by 20.5 points (-8.4% versus -28.9%). One caveat on sizing: TOMZ is 3.1 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.
T vs TOMZ: side by side
| T (AT&T) | TOMZ (TOMI Environmental Solutions, Inc.) | |
|---|---|---|
| 1-year return | -8.4% | -28.9% |
| 5-year return | +67.2% | -66.5% |
| Volatility (ann.) | 22.4% | 68.9% |
| Beta vs S&P 500 | 0.05 | 1.00 |
| Max drawdown (3Y) | -28.9% | -61.6% |
| Market cap | $174.3B | – |
| P/E (trailing) | 8.4 | – |
| Dividend yield | 4.29% | 0.00% |
| Sector / category | Communication Services | US Listed |
Year-by-year returns
| Year | T | TOMZ |
|---|---|---|
| 2022 | +6.5% | -70.3% |
| 2023 | -2.7% | +106.1% |
| 2024 | +44.1% | +4.0% |
| 2025 | +14.0% | -25.7% |
| 2026 | +6.1% | -24.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are T and TOMZ good diversifiers for each other?
By historical standards, yes. A correlation of -0.27 means the two rarely move for the same reasons.
FAQ
What is the correlation between T and TOMZ?
Using weekly returns as of 2026-08-27: -0.27 over 3 years, with -0.43 over the last year and -0.06 over 5 years.
Is TOMZ a good diversifier for T?
By historical standards, yes. A correlation of -0.27 means the two rarely move for the same reasons.
What does a correlation of -0.27 mean?
On the −1 to +1 scale, -0.27 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/t-vs-tomz.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/t-vs-tomz/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: T correlations · TOMZ correlations
