$156.44▼ −1.16 · −0.7%from $157.60 the session before · Sep 30, 2026 close · end of day
Open
$158.13
High
$158.16
Low
$156.25
Day's range
$1.91.2% of the previous close
VWAP
$156.78close −0.22% from it
Volume, shares
966K0.94× the 20-session average
Traded, $
$151.4M
Trades
17.5K55 shares per trade
Previous close
$157.60−1.16 to the close
Market cap
$26.44Bat the close of Sep 30
Day range10% of the way up
$156.25$158.16
52-week range4% of the way up
$155.00 Sep 23$192.51 Apr 9
−19% from the high · +0.93% from the low
Options
No listed options on ATO
Close $ · S&P 500 rebased to the first close126 sessions to Sep 30 · axis fixed at 4 × ATR-14 around the last close · hover or tap a session and the read beside the chart follows it
consolidated · latest filed Aug 5, 2026 · SEC filings
Revenue $879.1M, +4.8% on a year earlier; profit $242.7M, +30% in the Jun 2026 quarter, consolidated.
Last 8 quarters, consolidatedUS dollars as filed · year on year against the same quarter a year earlier · market: close on the first session after the filing against the last close before it, S&P 500 over the same session
Quarterly results of ATO on the consolidated basis with the market's move on the first session after each filing
Quarter
Revenue $
Revenue YoY
Profit $
Profit YoY
EPS $
Market on the day
Jun 2026filed Aug 5
$879.1M
▲ +4.8%
$242.7M
▲ +30%
1.43
▼ −0.1%S&P 500 −0.2% · 0.0 pp
Mar 2026filed Aug 5
$1.96B
▲ +0.61%
$581.9M
▲ +20%
3.47
▼ −0.1%S&P 500 −0.2% · 0.0 pp
Dec 2025filed Aug 5
$1.34B
▲ +14%
$403.0M
▲ +15%
2.44
▼ −0.1%S&P 500 −0.2% · 0.0 pp
Sep 2025filed Nov 14
$737.5M
▲ +12%
$174.9M
▲ +31%
1.04
—not reached
Jun 2025filed Aug 5
$838.8M
▲ +20%
$186.4M
▲ +13%
1.16
▼ −0.1%S&P 500 −0.2% · 0.0 pp
Mar 2025filed Aug 5
$1.95B
▲ +18%
$485.6M
▲ +12%
3.03
▼ −0.1%S&P 500 −0.2% · 0.0 pp
Dec 2024filed Aug 5
$1.18B
▲ +1.5%
$351.9M
▲ +13%
2.23
▼ −0.1%S&P 500 −0.2% · 0.0 pp
Sep 2024filed Nov 18
$657.9M
▲ +12%
$134.0M
▲ +13%
0.82
—not reached
By fiscal yearfiscal years as filed in the 10-K · named by the year the fiscal year ends
Financial-year results of ATO on the consolidated basis, summed from the quarters filed
Year
Revenue $
Revenue YoY
Profit $
Profit YoY
EPS $
FY25to Sep 2025
$4.70B
▲ +13%
$1.20B
▲ +15%
7.46
FY24to Sep 2024
$4.17B
▼ −2.6%
$1.04B
▲ +18%
6.83
FY23to Sep 2023
$4.28B
▲ +1.8%
$885.9M
▲ +14%
6.10
FY22to Sep 2022
$4.20B
▲ +23%
$774.4M
▲ +16%
5.60
FY21to Sep 2021
$3.41B
▲ +21%
$665.6M
▲ +11%
5.12
Fundamentals
consolidated · filings to Jun 2026 · close $156.44 on Sep 30
ATO trades at 19 times trailing earnings, 1.7 times book value, revenue +6.5% over twelve months, a 1.3% dividend yield, market cap $26.44B.
Valuation
Market cap
$26.44Bon Sep 30
Price to earnings
19consolidated · four quarters to Jun 2026
Trailing EPS
$8.38diluted · consolidated · four quarters to Jun 2026
Price to book
1.7consolidated · balance sheet to Jun 2026
Book value a share
$90.29consolidated · balance sheet to Jun 2026
Debt to equity
—
Return on equity
9.8%trailing profit over average equity · consolidated
Dividend yield
1.3%$2.00 a share in 365 days
Price to sales
5.4market cap over revenue, four quarters to Jun 2026
Shares outstanding
169Mon Sep 30
Growthsums of the four quarters filed to Jun 2026 · growth against the four quarters before them · consolidated
Revenue, trailing 12 months
$4.92Bfour quarters to Jun 2026
Revenue growth, 12 months
▲ +6.5%against the twelve months before
Revenue 3-year CAGR
▲ +3.7%trailing twelve months against the twelve months 3 years earlier · consolidated
Profit, trailing 12 months
$1.40Bfour quarters to Jun 2026
Profit growth, 12 months
▲ +21%against the twelve months before
Profit 3-year CAGR
▲ +19%trailing twelve months against the twelve months 3 years earlier · consolidated
Shareholding
quarter to Jun 2026 · SEC Form 13F
13F managers hold 190% of shares, BlackRock, Inc. the largest at 18%, STATE STREET CORP 13% and VANGUARD CAPITAL MANAGEMENT LLC 13%, as filed for the quarter to Jun 2026.
18.0%13.5%12.9%142.7%
BlackRock, Inc. 18.0%
STATE STREET CORP 13.5%
VANGUARD CAPITAL MANAGEMENT LLC 12.9%
Other 13F managers 142.7%
Held by 13F managers
190%of shares outstanding
Shares held
316M−1.2% on Mar 2026 among managers filing both
Managers holding
982960 a quarter earlier
Largest holder
18%BlackRock, Inc.
Largest 10 holderspercent of shares outstanding · change in shares against the previous quarter
Largest 13F holders of ATO
Manager
Shares
Of outstanding
Value
Change on quarter
BlackRock, Inc.
30.5M
18%
$5.25B
−4.43M
STATE STREET CORP
22.8M
13%
$3.92B
+14.6K
VANGUARD CAPITAL MANAGEMENT LLC
21.8M
13%
$3.75B
+299K
VANGUARD PORTFOLIO MANAGEMENT LLC
18.7M
11%
$3.22B
+149K
WELLINGTON MANAGEMENT GROUP LLP
18.4M
11%
$3.16B
−931K
Capital International Investors
15M
8.9%
$2.58B
+312K
GEODE CAPITAL MANAGEMENT, LLC
8.98M
5.3%
$1.54B
+305K
BANK OF AMERICA CORP /DE/
8.36M
5.0%
$1.44B
−37.4K
Invesco Ltd.
6.35M
3.8%
$1.09B
+333K
MORGAN STANLEY
5.73M
3.4%
$986.7M
−275K
Insider tradesSEC Forms 3, 4 and 5 · the latest 10
No open-market insider buying or selling in the last 90 days.
ATO insider trades
Insider
Trade
Shares
Price
Held after
AKERS JOHN KDirector,Officer
exercised · May 2, 2026
16,850
$189.74
142,214
AKERS JOHN KDirector,Officer
withheld for tax · May 2, 2026
6,235
$187.74
135,979
FAULK MICHELLEOfficer
exercised · May 2, 2026
175
$189.74
1,272
FAULK MICHELLEOfficer
withheld for tax · May 2, 2026
70
$189.74
1,202
Forsythe Christopher TOfficer
exercised · May 2, 2026
3,970
$189.74
63,585
Forsythe Christopher TOfficer
withheld for tax · May 2, 2026
1,563
$189.74
62,022
HARTSFIELD KAREN EOfficer
exercised · May 2, 2026
2,815
$189.74
34,028
HARTSFIELD KAREN EOfficer
withheld for tax · May 2, 2026
1,042
$189.74
32,986
MCDILL JOHN SOfficer
withheld for tax · May 2, 2026
1,042
$189.74
36,372
MCDILL JOHN SOfficer
exercised · May 2, 2026
2,815
$189.74
37,414
Corporate actions
exchange records
Nothing upcoming on record; the last was a dividend of $1.00 a share, ex-date Aug 24, 2026.
Actionsex-dates · upcoming first, then the last eight · dividends in dollars a share, splits as ratios
Corporate actions of ATO, upcoming first, then the most recent
Ex-date
Action
Amount or ratio
Record date
recent
Aug 24, 2026
dividend
$1.00
—
May 26, 2026
dividend
$1.00
—
Calendardividends by ex-date
Dividends in 365 days
$2.00a share · ex-dates inside the year
Last dividend
$1.00ex-date Aug 24, 2026
Price history
131 sessions on record · to Sep 30 · end of day
ATO is −6.7% over 20 sessions against the S&P 500's +0.1%, 19% below its 52-week high, realised volatility 10% annualised.
Returns against S&P 500longest window first · S&P 500 over the same sessions
Returns of the stock and S&P 500 over six windows, longest first
Window
From $
ATO %
S&P 500 %
Difference pp
120 sessionssince Apr 9
$192.28
▼ −19%
▲ +12%
−31
60 sessionssince Jul 7
$177.57
▼ −12%
▲ +2.0%
−14
20 sessionssince Sep 1
$167.69
▼ −6.7%
▲ +0.11%
−6.8
5 sessionssince Sep 23
$156.24
▲ +0.13%
▼ −0.67%
+0.80
1 sessionsince Sep 29
$157.61
▼ −0.74%
▼ −0.21%
−0.53
Averages of the closeclose against each average
5-session average
$156.94close −0.32% from it
20-session average
$161.69close −3.2% from it
50-session average
$167.60close −6.7% from it
Range and volumetrue range over 14 sessions · high to low over 20 · volume against the 20-session average
Average true range, 14
$2.01.3% of the close
Average day's range, 20
$2.01.3% of the close
Volume against 20 sessions
0.94×966K vs 1.03M average
Volatility and co-movement with S&P 500annualised from daily returns
Realised volatility, 20
10%≈ ±0.65% a session · moved more than that on 10 of 20
Realised volatility, 60
14%≈ ±0.89% a session · moved more than that on 20 of 60
Beta to S&P 500, 60
-0.30moved with S&P 500 on 34 of 60 sessions
Up and down sessionscloses above and below the previous close
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