Atmos Energy Corporation
US ˙ NYSE ˙ US0495601058

SecurityATO / Atmos Energy Corporation
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership31,943 shares
Latest Disclosed Value $ 5,903,192
Advisor Group Holdings, Inc. reports 10.43% decrease in ownership of ATO / Atmos Energy Corporation

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 31,943 shares of Atmos Energy Corporation (US:ATO) valued at $5,900,511 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 35,662 shares of Atmos Energy Corporation. This represents a change in shares of -10.43% during the quarter. The current value of the position is $5,437,976 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ATMOS ENERGY COM 049560105 31,943 -3,719 -10.43 5,903 -1.29 0.0050
2026-02-17 2025-12-31 13F ATMOS ENERGY COM 049560105 35,662 6,734 23.28 5,981 22.69 0.0087
2025-11-14 2025-09-30 13F ATMOS ENERGY COM 049560105 28,928 3,902 15.59 4,874 26.17 0.0068
2025-09-04 2025-06-30 13F/A-1 TMOS ENERGY COM 049560105 25,026 -2,044 -7.55 3,864 -7.85 0.0069
2025-08-13 2025-06-30 13F TMOS ENERGY COM 049560105 26,126 -944 3,755 0.0043
2025-05-12 2025-03-31 13F ATMOS ENERGY COM 049560105 27,070 5,475 25.35 4,192 47.71 0.0093
2025-06-06 2024-12-31 13F/A-1 ATMOS ENERGY COM 049560105 21,595 -955 -4.24 2,838 -9.39 0.0064
2025-02-07 2024-12-31 13F ATMOS ENERGY COM 049560105 20,739 -1,811 2,708 0.0069
2024-11-13 2024-09-30 13F ATMOS ENERGY COM 049560105 22,550 -1,136 -4.80 3,132 13.31 0.0071
2024-08-13 2024-06-30 13F ATMOS ENERGY COM 049560105 23,686 6,285 36.12 2,764 33.59 0.0065
2024-05-10 2024-03-31 13F ATMOS ENERGY COM 049560105 17,401 -7,611 -30.43 2,070 -28.66 0.0046
2024-02-12 2023-12-31 13F ATMOS ENERGY COM 049560105 25,012 -14,401 -36.54 2,901 -30.57 0.0051
2023-11-13 2023-09-30 13F ATMOS ENERGY COM 049560105 39,413 12,948 48.92 4,177 35.57 0.0062
2023-08-21 2023-06-30 13F/A-1 ATMOS ENERGY COM 049560105 26,465 882 3.45 3,082 7.05 0.0055
2023-08-10 2023-06-30 13F ATMOS ENERGY COM 049560105 29,810 4,227 3,078 0.0008
2023-05-12 2023-03-31 13F ATMOS ENERGY COM 049560105 25,583 -3,306 -11.44 2,878 -11.15 0.0054
2023-02-10 2022-12-31 13F ATMOS ENERGY COM 049560105 28,889 -2,539 -8.08 3,239 1.19 0.0066
2022-11-14 2022-09-30 13F ATMOS ENERGY COM 049560105 31,428 -540 -1.69 3,201 -10.74 0.0073
2022-08-10 2022-06-30 13F ATMOS ENERGY COM 049560105 31,968 1,316 4.29 3,586 -6.52 0.0079
2022-05-04 2022-03-31 13F ATMOS ENERGY COM 049560105 30,652 8,191 36.47 3,836 62.96 0.0074
2022-02-03 2021-12-31 13F ATMOS ENERGY COM 049560105 22,461 -84 -0.37 2,354 18.29 0.0045
2021-11-05 2021-09-30 13F ATMOS ENERGY COM 049560105 22,545 1,816 8.76 1,990 -0.15 0.0041
2021-08-02 2021-06-30 13F ATMOS ENERGY COM 049560105 20,729 -2,442 -10.54 1,993 -12.89 0.0043
2021-05-13 2021-03-31 13F ATMOS ENERGY COM 049560105 23,171 2,682 13.09 2,288 17.09 0.0055
2021-02-10 2020-12-31 13F ATMOS ENERGY COM 049560105 20,489 -9,279 -31.17 1,954 -31.73 0.0052
2020-11-12 2020-09-30 13F ATMOS ENERGY COM 049560105 29,768 -3,901 -11.59 2,862 -14.64 0.0086
2020-08-14 2020-06-30 13F ATMOS ENERGY COM 049560105 33,669 -13,758 -29.01 3,353 -0.59 0.0113
2020-05-18 2020-03-31 13F ATMOS ENERGY COM 049560105 47,427 47,427 3,373 0.0138
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.