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Companies / Utilities / Atmos Energy
ATO

Atmos Energy

UtilitiesElectric, Gas & WaterS&P 500
Ticker ATODALLAS, TXFiscal year ends SeptemberBook value per share $91.17Diluted shares 167.4M

Atmos Energy Corporation (NYSE: ATO) is a natural gas-only distributor that delivers gas through regulated sales and transportation arrangements to approximately 3.4 million residential, commercial, public authority and industrial customers in eight states, primarily in the South. Its two reportable segments are… From the company’s description.

In fiscal 2025, Atmos Energy reported revenue of $4.70B, up 12.9% from fiscal 2024, and net income of $1.20B. Its operating margin was 33.2%, and operations generated $2.05B in cash. Over the twelve months to Jun 30, 2026, revenue was $4.92B.

Fiscal year 2025 · ends 09-30Changes are against fiscal 2024The amber dot is the latest twelve months, to 2026-06-30
Sales & profitability
$4.70BFY2025
+12.9% year over year
Last 12 mo $4.92B
33.17%FY2025
+0.6 percentage points
Last 12 mo 36.97%
$1.20BFY2025
+14.9% year over year
Last 12 mo $1.40B
8.84%FY2025
+0.3 percentage points
Last 12 mo 9.19%
Cash & financing
$2.05BFY2025
+18.2% year over year
Last 12 mo $2.02B
$-1.51BFY2025
−25.6% year over year
Last 12 mo $-2.02B
0.66FY2025
Was 0.64× a year earlier
Last 12 mo 0.67
160.6MFY2025
+5.2% year over year
Last 12 mo 167.4M

Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.

What Atmos Energy does

In the company’s own words

Atmos Energy Corporation (NYSE: ATO) is a natural gas-only distributor that delivers gas through regulated sales and transportation arrangements to approximately 3.4 million residential, commercial, public authority and industrial customers in eight states, primarily in the South. Its two reportable segments are distribution, comprising regulated gas distribution and related sales, and pipeline and storage, comprising regulated pipeline, storage and transmission operations in Texas and Louisiana. The company also transports and stores gas for local distribution companies, industrial and electric generation customers, marketers and producers; its Atmos Pipeline–Texas division operates five underground storage facilities and one of the largest intrastate pipeline systems in Texas. At September 30, 2025, Atmos Energy had 5,487 employees and operated more than 81,000 miles of distribution and transmission lines. Its website is www.atmosenergy.com.

Company details
Sector
Utilities
Industry (SIC)
Electric, Gas & Water
Headquarters
DALLAS, TX
Fiscal year end
September
CIK
731802
SIC
4924

Financial performance, year by year

Fiscal 2013–2025 · USD
$-494.09M$988.18M$2.47B$3.95B$5.44B2013201420152016201720182019202020212022202320242025Last 12 moLast 12 monthsLast 12 months

The full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.

Ownership

Who owns Atmos Energy — and what changed

Funds as of 2026Q2 · superinvestors as of 2026-06-30

668
funds hold it
0 of 35
superinvestors hold it
$13.53B
held by funds, at market
45.2%
of shares held by funds
19
bond issues held by funds

Largest fund holders · Atmos Energy’s weight in each

VANGUARD TOTAL STOCK MARKET INDEX FUND
VTI · VANGUARD INDEX FUNDS
0.04%of fund net assets
VANGUARD 500 INDEX FUND
VOO · VANGUARD INDEX FUNDS
0.04%of fund net assets
VANGUARD SMALL-CAP INDEX FUND
VB · VANGUARD INDEX FUNDS
0.35%of fund net assets
—of fund net assets
0.30%of fund net assets

Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.

Atmos Energy’s bonds, as funds hold them

Funds report holding 19 issues of Atmos Energy’s debt, $853.16M at market value — what funds hold, not the company’s total debt. Weighted-average coupon 4.52%, maturing 2027 to 2056.

Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.

Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.

Connected research

Put this business in context.

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  • “How do Atmos Energy and its peers compare on margins and cash generation over ten years?”
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