FSLR vs TOMZ: Correlation
Measured on weekly returns over the past three years, First Solar (FSLR) and TOMI Environmental Solutions, Inc. (TOMZ) carry a correlation of 0.32, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FSLR and TOMZ?
Over the past 3 years, FSLR and TOMZ moved with a correlation of 0.32, which is moderate. Recent behaviour matches the longer record: 0.37 over 1 year against 0.32 over 3. Over 5 years the correlation is 0.27, and the annualized covariance of weekly returns is 1233.6 %².
Within FSLR's tracked universe of 34 assets, TOMZ comes in at #22 by 3-year correlation. The last year tells two different stories: FSLR led by 38.8 percentage points, +9.9% for FSLR against -28.9% for TOMZ.
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.
FSLR vs TOMZ: side by side
| FSLR (First Solar) | TOMZ (TOMI Environmental Solutions, Inc.) | |
|---|---|---|
| 1-year return | +9.9% | -28.9% |
| 5-year return | +119.6% | -66.5% |
| Volatility (ann.) | 56.2% | 68.9% |
| Beta vs S&P 500 | 1.14 | 1.00 |
| Max drawdown (3Y) | -60.0% | -61.6% |
| Market cap | $22.6B | – |
| P/E (trailing) | 12.7 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | Information Technology | US Listed |
Year-by-year returns
| Year | FSLR | TOMZ |
|---|---|---|
| 2022 | +71.9% | -70.3% |
| 2023 | +15.0% | +106.1% |
| 2024 | +2.3% | +4.0% |
| 2025 | +48.2% | -25.7% |
| 2026 | -19.6% | -24.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FSLR and TOMZ good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.32 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between FSLR and TOMZ?
Using weekly returns as of 2026-08-27: 0.32 over 3 years, with 0.37 over the last year and 0.27 over 5 years.
Is TOMZ a good diversifier for FSLR?
Yes, to a useful degree: a correlation of 0.32 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.32 mean?
A reading of 0.32 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/fslr-vs-tomz.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/fslr-vs-tomz/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: FSLR correlations · TOMZ correlations
