Atmos Energy Corporation
MX ˙ BMV ˙ US0495601058
SecurityMX:ATO / Atmos Energy Corporation
InstitutionFirst Trust Advisors Lp
Latest Disclosed Ownership340,408 shares
Latest Disclosed Value $ 62,880,094
First Trust Advisors Lp reports 26.23% decrease in ownership of ATO / Atmos Energy Corporation

On May 13, 2026 - First Trust Advisors Lp filed a 13F-HR form disclosing ownership of 340,408 shares of Atmos Energy Corporation (MX:ATO) valued at $62,880,094 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 461,418 shares of Atmos Energy Corporation. This represents a change in shares of -26.23% during the quarter.

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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-13 2026-03-31 13F ATMOS ENERGY COM 049560105 340,408 -121,010 -26.23 62,880 -18.70 0.0448
2026-02-13 2025-12-31 13F ATMOS ENERGY COM 049560105 461,418 -116,398 -20.14 77,347 -21.60 0.0562
2025-11-12 2025-09-30 13F ATMOS ENERGY COM 049560105 577,816 -10,680 -1.81 98,662 8.79 0.0733
2025-08-13 2025-06-30 13F ATMOS ENERGY COM 049560105 588,496 -47,002 -7.40 90,693 -7.68 0.0729
2025-05-14 2025-03-31 13F ATMOS ENERGY COM 049560105 635,498 118,863 23.01 98,235 36.53 0.0870
2025-02-13 2024-12-31 13F ATMOS ENERGY COM 049560105 516,635 -35,685 -6.46 71,952 -6.08 0.0634
2024-11-13 2024-09-30 13F ATMOS ENERGY COM 049560105 552,320 -1,497 -0.27 76,612 18.59 0.0730
2024-08-13 2024-06-30 13F ATMOS ENERGY COM 049560105 553,817 -125,316 -18.45 64,603 -19.98 0.0659
2024-05-13 2024-03-31 13F ATMOS ENERGY COM 049560105 679,133 -70,302 -9.38 80,729 -7.06 0.0819
2024-02-13 2023-12-31 13F ATMOS ENERGY COM 049560105 749,435 5,197 0.70 86,860 10.18 0.0948
2023-11-13 2023-09-30 13F ATMOS ENERGY COM 049560105 744,238 -48,193 -6.08 78,837 -14.49 0.0934
2023-08-14 2023-06-30 13F ATMOS ENERGY COM 049560105 792,431 -27,624 -3.37 92,191 0.05 0.1048
2023-05-15 2023-03-31 13F ATMOS ENERGY COM 049560105 820,055 9,909 1.22 92,141 1.48 0.1064
2023-02-09 2022-12-31 13F ATMOS ENERGY COM 049560105 810,146 74,939 10.19 90,801 21.26 0.1080
2022-11-14 2022-09-30 13F ATMOS ENERGY COM 049560105 735,207 -27,501 -3.61 74,880 -12.42 0.0971
2022-08-12 2022-06-30 13F ATMOS ENERGY COM 049560105 762,708 119,790 18.63 85,500 11.30 0.1056
2022-05-13 2022-03-31 13F ATMOS ENERGY COM 049560105 642,918 -92,343 -12.56 76,822 -0.27 0.0786
2022-02-08 2021-12-31 13F ATMOS ENERGY COM 049560105 735,261 -57,410 -7.24 77,033 10.18 0.0749
2021-11-15 2021-09-30 13F ATMOS ENERGY COM 049560105 792,671 26,905 3.51 69,914 -5.02 0.0752
2021-10-12 2021-06-30 13F/A-1 ATMOS ENERGY COM 049560105 765,766 -68,786 -8.24 73,609 -10.77 0.0797
2021-08-16 2021-06-30 13F ATMOS ENERGY COM 049560105 1,429,808 595,256 137,419 0.1417
2021-05-14 2021-03-31 13F ATMOS ENERGY COM 049560105 834,552 62,394 8.08 82,495 11.95 0.0999
2021-02-02 2020-12-31 13F ATMOS ENERGY COM 049560105 772,158 69,682 9.92 73,687 9.73 0.0976
2020-11-05 2020-09-30 13F ATMOS ENERGY COM 049560105 702,476 191,065 37.36 67,150 31.86 0.1076
2020-07-22 2020-06-30 13F ATMOS ENERGY COM 049560105 511,411 -155,711 -23.34 50,926 -23.07 0.0883
2020-05-06 2020-03-31 13F ATMOS ENERGY COM 049560105 667,122 66,361 11.05 66,199 -1.49 0.1500
2020-02-03 2019-12-31 13F ATMOS ENERGY COM 049560105 600,761 34,806 6.15 67,201 4.26 0.1148
2019-11-04 2019-09-30 13F ATMOS ENERGY COM 049560105 565,955 56,678 11.13 64,457 19.90 0.1214
2019-07-30 2019-06-30 13F ATMOS ENERGY COM 049560105 509,277 43,274 9.29 53,759 12.08 0.1014
2019-06-19 2019-03-31 13F/A-1 ATMOS ENERGY COM 049560105 466,003 230,346 97.75 47,966 119.52 0.0954
2019-05-09 2019-03-31 13F ATMOS ENERGY COM 049560105 466,003 230,346 47,966
2019-02-07 2018-12-31 13F ATMOS ENERGY COM 049560105 235,657 -181,482 -43.51 21,850 -44.22 0.0518
2018-10-25 2018-09-30 13F ATMOS ENERGY COM 049560105 417,139 65,669 18.68 39,174 23.65 0.0729
2018-08-02 2018-06-30 13F ATMOS ENERGY COM 049560105 351,470 -23,336 -6.23 31,682 0.34 0.0657
2018-04-23 2018-03-31 13F ATMOS ENERGY COM 049560105 374,806 -9,892 -2.57 31,574 -4.44 0.0725
2018-02-08 2017-12-31 13F ATMOS ENERGY COM 049560105 384,698 -79,939 -17.20 33,042 -15.18 0.0787
2017-10-24 2017-09-30 13F ATMOS ENERGY COM 049560105 464,637 -41,842 -8.26 38,955 -7.28 0.1002
2017-08-02 2017-06-30 13F ATMOS ENERGY COM 049560105 506,479 5,021 1.00 42,012 6.06 0.1121
2017-05-02 2017-03-31 13F ATMOS ENERGY COM 049560105 501,458 46,544 10.23 39,610 17.43 0.1098
2017-02-06 2016-12-31 13F ATMOS ENERGY COM 049560105 454,914 152,096 50.23 33,732 49.58 0.1004
2016-11-01 2016-09-30 13F ATMOS ENERGY COM 049560105 302,818 -206,445 -40.54 22,551 -45.55 0.0673
2016-08-04 2016-06-30 13F ATMOS ENERGY COM 049560105 509,263 150,591 41.99 41,413 55.48 0.1304
2016-05-10 2016-03-31 13F ATMOS ENERGY COM 049560105 358,672 185,053 106.59 26,635 143.35 0.0856
2016-05-04 2015-12-31 13F/A-1 ATMOS ENERGY COM 049560105 173,619 -95,681 -35.53 10,945 -30.14 0.0284
2016-02-03 2015-12-31 13F ATMOS ENERGY COM 049560105 173,619 10,945
2015-11-05 2015-09-30 13F ATMOS ENERGY COM 049560105 269,300 34,842 14.86 15,668 30.32 0.0454
2015-08-04 2015-06-30 13F ATMOS ENERGY COM 049560105 234,458 21,382 10.03 12,023 2.04 0.0312
2015-05-04 2015-03-31 13F ATMOS ENERGY COM 049560105 213,076 -218,633 -50.64 11,783 -51.03 0.0346
2015-02-13 2014-12-31 13F ATMOS ENERGY COM 049560105 431,709 193,643 81.34 24,063 111.90 0.0812
2014-11-12 2014-09-30 13F ATMOS ENERGY COM 049560105 238,066 -195,708 -45.12 11,356 -50.98 0.0447
2014-08-11 2014-06-30 13F ATMOS ENERGY COM 049560105 433,774 110,266 34.08 23,164 51.92 0.0962
2014-05-12 2014-03-31 13F ATMOS ENERGY COM 049560105 323,508 60,364 22.94 15,247 27.57 0.0670
2014-08-08 2013-12-31 13F/A-1 ATMOS ENERGY COM 049560105 263,144 -187,677 -41.63 11,952 -37.75 0.0579
2014-02-13 2013-12-31 13F ATMOS ENERGY COM 049560105 397,982 18,076
2013-11-12 2013-09-30 13F ATMOS ENERGY COM 049560105 450,821 53,752 13.54 19,200 17.76 0.1041
2013-08-12 2013-06-30 13F ATMOS ENERGY COM 049560105 397,069 397,069 16,304 0.1061
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.