阿特莫斯能源公司
MX ˙ BMV ˙ US0495601058
SecurityMX:ATO / Atmos Energy Corporation
InstitutionFirst Dallas Securities Inc.
Latest Disclosed Ownership4,462 shares
Latest Disclosed Value $ 824,184
First Dallas Securities Inc. reports 2.13% decrease in ownership of ATO / Atmos Energy Corporation

On April 27, 2026 - First Dallas Securities Inc. filed a 13F-HR form disclosing ownership of 4,462 shares of Atmos Energy Corporation (MX:ATO) valued at $824,184 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 4,559 shares of Atmos Energy Corporation. This represents a change in shares of -2.13% 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)
2026-04-27 2026-03-31 13F Atmos Energy COM 049560105 4,462 -97 -2.13 824 7.85 0.3049
2026-02-11 2025-12-31 13F Atmos Energy COM 049560105 4,559 -297 -6.12 764 -7.84 0.2844
2026-02-11 2025-12-31 13F Atmos Energy COM 049560105 4,559 764
2025-11-05 2025-09-30 13F Atmos Energy COM 049560105 4,856 53 1.10 829 12.03 0.3106
2025-08-07 2025-06-30 13F Atmos Energy COM 049560105 4,803 3 0.06 740 -0.27 0.2926
2025-05-16 2025-03-31 13F ATMOS ENERGY COM 049560105 4,800 -21 -0.44 742 10.58 0.3101
2025-01-24 2024-12-31 13F ATMOS ENERGY COM 049560105 4,821 -99 -2.01 671 -1.61 0.2735
2024-11-18 2024-09-30 13F ATMOS ENERGY COM 049560105 4,920 -626 -11.29 682 5.57 0.2852
2024-08-02 2024-06-30 13F ATMOS ENERGY COM 049560105 5,546 4 0.07 647 0.2840
2024-04-16 2024-03-31 13F ATMOS ENERGY COM 049560105 5,542 -246 -4.25 1 0.3031
2024-02-13 2023-12-31 13F ATMOS ENERGY COM 049560105 5,788 5,788 1 0.3457
2023-11-14 2023-09-30 13F ATMOS ENERGY COM 049560105 0 -6,331 -100.00 0 0.0000
2023-08-07 2023-06-30 13F ATMOS ENERGY COM 049560105 6,331 -96 -1.49 1 0.4111
2023-05-15 2023-03-31 13F ATMOS ENERGY COM 049560105 6,427 -197 -2.97 1 0.4259
2023-02-03 2022-12-31 13F ATMOS ENERGY COM 049560105 6,624 -180 -2.65 1 -100.00 0.4472
2022-10-21 2022-09-30 13F ATMOS ENERGY COM 049560105 6,804 -522 -7.13 693 -15.59 0.4761
2022-07-28 2022-06-30 13F ATMOS ENERGY COM 049560105 7,326 -1,271 -14.78 821 -20.06 0.5533
2022-05-12 2022-03-31 13F ATMOS ENERGY COM 049560105 8,597 -1,134 -11.65 1,027 0.69 0.5801
2022-02-07 2021-12-31 13F ATMOS ENERGY COM 049560105 9,731 -9 -0.09 1,020 18.74 0.6690
2021-10-06 2021-09-30 13F ATMOS ENERGY COM 049560105 9,740 4 0.04 859 -8.23 0.5929
2021-07-06 2021-06-30 13F ATMOS ENERGY COM 049560105 9,736 -652 -6.28 936 -8.86 0.6134
2021-05-26 2021-03-31 13F ATMOS ENERGY COM 049560105 10,388 115 1.12 1,027 4.80 0.8735
2021-02-01 2020-12-31 13F ATMOS ENERGY COM 049560105 10,273 -182 -1.74 980 -1.90 0.8849
2020-10-15 2020-09-30 13F ATMOS ENERGY COM 049560105 10,455 -1,741 -14.28 999 -17.44 1.1231
2020-05-04 2020-03-31 13F ATMOS ENERGY COM 049560105 12,196 -2,072 -14.52 1,210 -24.19 1.6866
2020-02-04 2019-12-31 13F ATMOS ENERGY COM 049560105 14,268 -3,482 -19.62 1,596 -21.07 1.3622
2019-11-14 2019-09-30 13F ATMOS ENERGY COM 049560105 17,750 -800 -4.31 2,022 3.27 1.7928
2019-08-22 2019-06-30 13F ATMOS ENERGY COM 049560105 18,550 -98 -0.53 1,958 2.03 1.7127
2019-05-17 2019-03-31 13F Atmos Energy COM 049560105 18,648 -2,676 -12.55 1,919 -2.93 1.3801
2019-02-11 2018-12-31 13F Atmos Energy COM 049560105 21,324 -2,233 -9.48 1,977 -10.62 1.6477
2018-10-31 2018-09-30 13F Atmos Energy COM 049560105 23,557 -259 -1.09 2,212 3.08 1.3819
2018-07-31 2018-06-30 13F Atmos Energy COM 049560105 23,816 -254 -1.06 2,146 5.87 1.3721
2018-05-04 2018-03-31 13F Atmos Energy COM 049560105 24,070 -101 -0.42 2,027 -2.36 1.3237
2018-02-07 2017-12-31 13F ATMOS ENERGY COM 049560105 24,171 -368 -1.50 2,076 0.87 1.3200
2017-11-07 2017-09-30 13F Atmos Energy COM 049560105 24,539 -192 -0.78 2,058 0.34 1.4264
2017-08-14 2017-06-30 13F Atmos Energy COM 049560105 24,731 -321 -1.28 2,051 3.64 1.4983
2017-05-05 2017-03-31 13F Atmos Energy COM 049560105 25,052 -1,172 -4.47 1,979 1.38 1.3798
2017-01-11 2016-12-31 13F ATMOS ENERGY COM 049560105 26,224 -6,847 -20.70 1,952 -20.75 1.3357
2016-11-15 2016-09-30 13F ATMOS ENERGY COM 049560105 33,071 -21,896 -39.83 2,463 -44.90 1.8275
2016-07-26 2016-06-30 13F ATMOS ENERGY COM 049560105 54,967 -8,260 -13.06 4,470 -4.79 3.4510
2016-05-03 2016-03-31 13F ATMOS ENERGY COM 049560105 63,227 -7,693 -10.85 4,695 5.01 3.7984
2016-01-27 2015-12-31 13F ATMOS ENERGY COM 049560105 70,920 -3,899 -5.21 4,471 2.71 3.6620
2015-11-12 2015-09-30 13F ATMOS ENERGY COM 049560105 74,819 -6,123 -7.56 4,353 4.87 3.5784
2015-07-27 2015-06-30 13F Atmos Energy COM 049560105 80,942 -3,554 -4.21 4,151 -11.17 2.9937
2015-05-05 2015-03-31 13F/A-1 Atmos Energy COM 049560105 84,496 -11,725 -12.19 4,673 -12.87 3.2584
2015-05-05 2015-03-31 13F Atmos Energy COM 049560105 84,496 4,673
2015-02-17 2014-12-31 13F Atmos Energy COM 049560105 96,221 -2,188 -2.22 5,363 14.25 3.4899
2014-11-12 2014-09-30 13F Atmos Energy COM 049560105 98,409 -2,643 -2.62 4,694 -13.03 2.7878
2014-07-11 2014-06-30 13F ATMOS ENERGY CORP COM COM 049560105 101,052 -970 -0.95 5,397 12.23 3.2435
2014-04-15 2014-03-31 13F ATMOS ENERGY CORP COM COM 049560105 102,022 190 0.19 4,809 3.98 3.2113
2014-01-29 2013-12-31 13F ATMOS ENERGY CORP COM COM 049560105 101,832 -403 -0.39 4,625 6.22 3.0996
2013-11-13 2013-09-30 13F/A-1 ATMOS ENERGY CORP COM COM 049560105 102,235 -3,844 -3.62 4,354 -0.05 3.3242
2013-11-12 2013-09-30 13F ATMOS ENERGY CORP COM COM 049560105 102,235 4,354
2013-08-15 2013-06-30 13F ATMOS ENERGY CORP COM COM 049560105 106,079 106,079 4,356 3.3549
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.