ATO vs SR: Correlation
How closely do Atmos Energy (ATO) and Spire Inc. (SR) trade together? Their weekly returns over three years give a correlation of 0.70, which is strong.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ATO and SR?
Over the past 3 years, ATO and SR moved with a correlation of 0.70, which is strong. The relationship has been stable: the 1-year correlation (0.72) sits close to the 3-year figure. Over 5 years the correlation is 0.75, and the annualized covariance of weekly returns is 218.7 %².
By 3-year correlation, SR places #14 of the 32 assets tracked against ATO. The trailing year gives SR the advantage: +2.9% versus +11.6%, a 8.7-point spread.
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.
ATO vs SR: side by side
| ATO (Atmos Energy) | SR (Spire Inc.) | |
|---|---|---|
| 1-year return | +2.9% | +11.6% |
| 5-year return | +94.1% | +53.3% |
| Volatility (ann.) | 15.9% | 19.6% |
| Beta vs S&P 500 | 0.15 | 0.17 |
| Max drawdown (3Y) | -12.7% | -19.4% |
| Market cap | $28.3B | $4.9B |
| P/E (trailing) | 19.9 | 18.2 |
| Dividend yield | 2.28% | 3.90% |
| Sector / category | Utilities | US Listed |
Year-by-year returns
| Year | ATO | SR |
|---|---|---|
| 2022 | +9.6% | +9.8% |
| 2023 | +6.2% | -5.3% |
| 2024 | +23.4% | +14.1% |
| 2025 | +23.1% | +27.1% |
| 2026 | +1.5% | +1.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ATO and SR good diversifiers for each other?
To a limited degree. At 0.70 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between ATO and SR?
As of 2026-08-27, the correlation of weekly returns between ATO and SR is 0.70 over 3 years, 0.72 over 1 year and 0.75 over 5 years.
Is SR a good diversifier for ATO?
To a limited degree. At 0.70 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.70 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ato-vs-sr.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/ato-vs-sr/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ATO correlations · SR correlations
