阿特莫斯能源公司
MX ˙ BMV ˙ US0495601058
SecurityMX:ATO / Atmos Energy Corporation
InstitutionM&t Bank Corp
Latest Disclosed Ownership44,493 shares
Latest Disclosed Value $ 8,218,747
M&t Bank Corp reports 21.34% decrease in ownership of ATO / Atmos Energy Corporation

On May 12, 2026 - M&t Bank Corp filed a 13F-HR form disclosing ownership of 44,493 shares of Atmos Energy Corporation (MX:ATO) valued at $8,218,747 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 30, 2026 disclosing 56,567 shares of Atmos Energy Corporation. This represents a change in shares of -21.34% 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.

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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)
2026-05-12 2026-03-31 13F ATMOS ENERGY COM 049560105 44,493 -12,074 -21.34 8,219 -13.32 0.0067
2026-01-30 2025-12-31 13F/A-1 ATMOS ENERGY COM 049560105 56,567 10,018 21.52 9,482 19.29 0.0304
2026-01-28 2025-12-31 13F ATMOS ENERGY COM 049560105 14,610 -31,939 2,361 0.0014
2025-11-14 2025-09-30 13F ATMOS ENERGY COM 049560105 46,549 -20,657 -30.74 7,949 -23.25 0.0267
2025-08-13 2025-06-30 13F ATMOS ENERGY COM 049560105 67,206 -5,278 -7.28 10,357 -7.57 0.0356
2025-04-30 2025-03-31 13F ATMOS ENERGY COM 049560105 72,484 -5,102 -6.58 11,204 3.70 0.0408
2025-02-06 2024-12-31 13F ATMOS ENERGY COM 049560105 77,586 6,424 9.03 10,805 9.46 0.0362
2024-11-19 2024-09-30 13F/A-1 ATMOS ENERGY COM 049560105 71,162 -1,481 -2.04 9,871 16.47 0.0325
2024-11-15 2024-09-30 13F ALLSTATE COM 049560105 138,186 65,543 21,973 0.0132
2024-07-31 2024-06-30 13F ATMOS ENERGY COM 049560105 72,643 -2,714 -3.60 8,474 -5.39 0.0289
2024-05-07 2024-03-31 13F ATMOS ENERGY COM 049560105 75,357 6,789 9.90 8,958 12.72 0.0312
2024-02-06 2023-12-31 13F ATMOS ENERGY COM 049560105 68,568 4,257 6.62 7,946 16.65 0.0292
2023-11-02 2023-09-30 13F ATMOS ENERGY COM 049560105 64,311 -3,133 -4.65 6,812 -13.19 0.0272
2023-08-09 2023-06-30 13F ATMOS ENERGY COM 049560105 67,444 1,702 2.59 7,847 6.24 0.0293
2023-05-11 2023-03-31 13F ATMOS ENERGY COM 049560105 65,742 -3,296 -4.77 7,386 -4.52 0.0286
2023-02-13 2022-12-31 13F/A-1 ATMOS ENERGY COM 049560105 69,038 -500 -0.72 7,737 9.23 0.0311
2023-02-13 2022-12-31 13F ATLASSIAN CL A 049560105 69,046 -492 7,738 0.0311
2022-11-17 2022-09-30 13F/A-1 ATMOS ENERGY COM 049560105 69,538 -1,921 -2.69 7,082 -10.94 0.0315
2022-11-14 2022-09-30 13F ATMOS ENERGY COM 049560105 69,538 -1,921 7,082 0.0060
2022-08-05 2022-06-30 13F ATMOS ENERGY COM 049560105 71,459 9,898 16.08 7,952 8.12 0.0375
2022-05-09 2022-03-31 13F ATMOS ENERGY COM 049560105 61,561 56,855 1,208.14 7,355 1,394.92 0.0325
2022-02-07 2021-12-31 13F ATMOS ENERGY COM 049560105 4,706 -1,634 -25.77 492 -11.83 0.0021
2021-10-28 2021-09-30 13F ATMOS ENERGY COM 049560105 6,340 -170 -2.61 558 -10.72 0.0025
2021-08-13 2021-06-30 13F ATMOS ENERGY COM 049560105 6,510 -190 -2.84 625 -5.59 0.0027
2021-05-06 2021-03-31 13F ATMOS ENERGY COM 049560105 6,700 -48 -0.71 662 2.64 0.0029
2021-02-12 2020-12-31 13F ATMOS ENERGY COM 049560105 6,748 2,122 45.87 645 46.26 0.0028
2020-11-06 2020-09-30 13F ATMOS ENERGY COM 049560105 4,626 816 21.42 441 16.36 0.0022
2020-07-29 2020-06-30 13F ATMOS ENERGY COM 049560105 3,810 -349 -8.39 379 -8.23 0.0020
2020-05-14 2020-03-31 13F ATMOS ENERGY COM 049560105 4,159 526 14.48 413 1.72 0.0024
2020-02-07 2019-12-31 13F ATMOS ENERGY COM 049560105 3,633 -45 -1.22 406 -2.87 0.0019
2019-11-12 2019-09-30 13F ATMOS ENERGY COM 049560105 3,678 175 5.00 418 13.28 0.0021
2019-08-12 2019-06-30 13F ATMOS ENERGY COM 049560105 3,503 3,503 369 0.0019
2018-05-04 2018-03-31 13F ATMOS ENERGY COM 049560105 0 -2,417 -100.00 0 -100.00
2018-02-06 2017-12-31 13F ATMOS ENERGY COM 049560105 2,417 -615 -20.28 209 -18.04 0.0011
2017-11-13 2017-09-30 13F ATMOS ENERGY COM 049560105 3,032 -288 -8.67 255 -7.61 0.0014
2017-08-11 2017-06-30 13F ATMOS ENERGY COM 049560105 3,320 -215 -6.08 276 -1.08 0.0016
2017-05-10 2017-03-31 13F ATMOS ENERGY COM 049560105 3,535 -8,734 -71.19 279 -69.37 0.0017
2017-02-14 2016-12-31 13F ATMOS ENERGY COM 049560105 12,269 -946 -7.16 911 -7.42 0.0057
2016-11-04 2016-09-30 13F ATMOS ENERGY COM 049560105 13,215 -2,207 -14.31 984 -21.53 0.0063
2016-08-04 2016-06-30 13F ATMOS ENERGY COM 049560105 15,422 -88 -0.57 1,254 8.85 0.0084
2016-05-11 2016-03-31 13F ATMOS ENERGY COM 049560105 15,510 1,378 9.75 1,152 29.29 0.0078
2016-02-12 2015-12-31 13F ATMOS ENERGY COM 049560105 14,132 -1,418 -9.12 891 -1.55 0.0059
2015-11-13 2015-09-30 13F ATMOS ENERGY COM 049560105 15,550 -3,131 -16.76 905 -5.53 0.0062
2015-08-14 2015-06-30 13F ATMOS ENERGY COM 049560105 18,681 858 4.81 958 -2.64 0.0058
2015-05-14 2015-03-31 13F ATMOS ENERGY COM 049560105 17,823 2,729 18.08 984 17.00 0.0061
2015-02-12 2014-12-31 13F ATMOS ENERGY COM 049560105 15,094 2,245 17.47 841 37.64 0.0053
2014-11-14 2014-09-30 13F ATMOS ENERGY COM 049560105 12,849 12,819 42,730.00 611 30,450.00 0.0043
2014-08-13 2014-06-30 13F ATMOS ENERGY COMMON 049560105 30 0 0.00 2 100.00 0.0001
2014-05-14 2014-03-31 13F ATMOS ENERGY COMMON STOCK 049560105 30 0 0.00 1 0.00 0.0000
2014-02-12 2013-12-31 13F ATMOS ENERGY COMMON STOCK 049560105 30 0 0.00 1 0.00 0.0000
2013-11-13 2013-09-30 13F ATMOS ENERGY COMMON STOCK 049560105 30 0 0.00 1 0.00 0.0000
2013-07-30 2013-06-30 13F ATMOS ENERGY COMMON STOCK 049560105 30 30 1 0.0000
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.