애트모스 에너지 코퍼레이션
MX ˙ BMV ˙ US0495601058
SecurityMX:ATO / Atmos Energy Corporation
InstitutionGeode Capital Management, Llc
Latest Disclosed Ownership4,336,996 shares
Latest Disclosed Value $ 798,060,550
Geode Capital Management, Llc reports 2.89% increase in ownership of ATO / Atmos Energy Corporation

On May 15, 2026 - Geode Capital Management, Llc filed a 13F-HR form disclosing ownership of 4,336,996 shares of Atmos Energy Corporation (MX:ATO) valued at $798,060,550 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 4,214,985 shares of Atmos Energy Corporation. This represents a change in shares of 2.89% 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)
2026-05-15 2026-03-31 13F ATMOS ENERGY COM 049560105 4,336,996 122,011 2.89 798,061 13.39 0.0265
2026-02-09 2025-12-31 13F ATMOS ENERGY COM 049560105 4,214,985 78,438 1.90 703,824 0.05 0.0434
2025-11-12 2025-09-30 13F ATMOS ENERGY COM 049560105 4,136,547 62,661 1.54 703,439 12.52 0.0449
2025-08-08 2025-06-30 13F ATMOS ENERGY COM 049560105 4,073,886 63,166 1.57 625,180 1.15 0.0438
2025-05-13 2025-03-31 13F ATMOS ENERGY COM 049560105 4,010,720 204,271 5.37 618,053 16.89 0.0486
2025-02-12 2024-12-31 13F ATMOS ENERGY COM 049560105 3,806,449 107,700 2.91 528,760 3.41 0.0410
2024-11-12 2024-09-30 13F ATMOS ENERGY COM 049560105 3,698,749 -26,580 -0.71 511,344 17.97 0.0414
2024-08-09 2024-06-30 13F ATMOS ENERGY COM 049560105 3,725,329 95,794 2.64 433,446 0.72 0.0380
2024-05-13 2024-03-31 13F ATMOS ENERGY COM 049560105 3,629,535 193,216 5.62 430,366 8.33 0.0398
2024-02-13 2023-12-31 13F ATMOS ENERGY COM 049560105 3,436,319 86,517 2.58 397,256 12.18 0.0416
2023-11-13 2023-09-30 13F ATMOS ENERGY COM 049560105 3,349,802 145,413 4.54 354,115 -4.77 0.0422
2023-08-11 2023-06-30 13F ATMOS ENERGY COM 049560105 3,204,389 114,264 3.70 371,866 7.33 0.0437
2023-05-15 2023-03-31 13F ATMOS ENERGY COM 049560105 3,090,125 100,681 3.37 346,460 103,630.54 0.0450
2023-02-13 2022-12-31 13F ATMOS ENERGY COM 049560105 2,989,444 40,347 1.37 334 -99.89 0.0469
2022-11-14 2022-09-30 13F ATMOS ENERGY COM 049560105 2,949,097 90,239 3.16 300,033 -6.22 0.0455
2022-08-12 2022-06-30 13F ATMOS ENERGY COM 049560105 2,858,858 154,742 5.72 319,928 -0.76 0.0469
2022-05-13 2022-03-31 13F ATMOS ENERGY COM 049560105 2,704,116 198,213 7.91 322,367 23.10 0.0402
2022-02-11 2021-12-31 13F ATMOS ENERGY COM 049560105 2,505,903 85,829 3.55 261,871 23.00 0.0315
2021-11-12 2021-09-30 13F ATMOS ENERGY COM 049560105 2,420,074 56,259 2.38 212,910 -6.03 0.0287
2021-08-13 2021-06-30 13F ATMOS ENERGY COM 049560105 2,363,815 96,328 4.25 226,572 1.34 0.0312
2021-05-12 2021-03-31 13F ATMOS ENERGY COM 049560105 2,267,487 107,939 5.00 223,575 8.75 0.0342
2021-02-12 2020-12-31 13F ATMOS ENERGY COM 049560105 2,159,548 162,645 8.14 205,587 7.92 0.0345
2020-11-13 2020-09-30 13F ATMOS ENERGY COM 049560105 1,996,903 26,561 1.35 190,497 -2.73 0.0373
2020-08-13 2020-06-30 13F ATMOS ENERGY COM 049560105 1,970,342 -10,948 -0.55 195,849 -0.20 0.0419
2020-05-14 2020-03-31 13F ATMOS ENERGY COM 049560105 1,981,290 57,002 2.96 196,243 -8.65 0.0511
2020-02-20 2019-12-31 13F/A-1 ATMOS ENERGY COM 049560105 1,924,288 94,962 5.19 214,823 3.27 0.0449
2020-02-13 2019-12-31 13F ATMOS ENERGY COM 049560105 1,924,288 94,962 214,823 27,377.3078
2019-11-12 2019-09-30 13F ATMOS ENERGY COM 049560105 1,829,326 33,269 1.85 208,028 9.90 0.0485
2019-08-14 2019-06-30 13F ATMOS ENERGY COM 049560105 1,796,057 82,979 4.84 189,286 7.53 0.0458
2019-05-14 2019-03-31 13F ATMOS ENERGY COM 049560105 1,713,078 584,126 51.74 176,035 68.28 0.0456
2019-03-06 2018-12-31 13F/A-1 ATMOS ENERGY COM 049560105 1,128,952 106,370 10.40 104,610 9.01 0.0323
2019-02-13 2018-12-31 13F ATMOS ENERGY COM 049560105 1,128,952 106,370 104,610
2018-11-13 2018-09-30 13F ATMOS ENERGY COM 049560105 1,022,582 30,146 3.04 95,966 7.35 0.0270
2018-08-14 2018-06-30 13F ATMOS ENERGY COM 049560105 992,436 26,383 2.73 89,392 9.92 0.0275
2018-05-15 2018-03-31 13F ATMOS ENERGY COM 049560105 966,053 76,658 8.62 81,322 6.51 0.0265
2018-02-13 2017-12-31 13F ATMOS ENERGY COM 049560105 889,395 33,675 3.94 76,348 6.48 0.0259
2017-11-14 2017-09-30 13F ATMOS ENERGY COM 049560105 855,720 23,159 2.78 71,704 3.87 0.0265
2017-08-14 2017-06-30 13F ATMOS ENERGY COM 049560105 832,561 23,951 2.96 69,033 8.12 0.0271
2017-06-21 2017-03-31 13F/A-1 ATMOS ENERGY CORP COM COM 049560105 808,610 64,225 8.63 63,849 15.72 0.0262
2017-05-12 2017-03-31 13F ATMOS ENERGY CORP COM COM 049560105 808,610 63,849
2017-02-14 2016-12-31 13F ATMOS ENERGY CORP COM COM 049560105 744,385 53,943 7.81 55,176 7.35 0.0257
2016-11-10 2016-09-30 13F ATMOS ENERGY CORP COM COM 049560105 690,442 25,059 3.77 51,397 -4.97 0.0259
2016-08-12 2016-06-30 13F ATMOS ENERGY CORP COM COM 049560105 665,383 54,437 8.91 54,084 19.28 0.0294
2016-05-13 2016-03-31 13F ATMOS ENERGY CORP COM COM 049560105 610,946 9,989 1.66 45,341 19.68 0.0241
2016-02-12 2015-12-31 13F ATMOS ENERGY CORP COM COM 049560105 600,957 5,215 0.88 37,884 9.30 0.0216
2015-11-13 2015-09-30 13F ATMOS ENERGY CORP COM COM 049560105 595,742 7,895 1.34 34,660 14.98 0.0210
2015-08-14 2015-06-30 13F ATMOS ENERGY CORP COM COM 049560105 587,847 33,462 6.04 30,144 -1.67 0.0172
2015-05-14 2015-03-31 13F ATMOS ENERGY CORP COM COM 049560105 554,385 29,560 5.63 30,657 4.80 0.0175
2015-02-12 2014-12-31 13F ATMOS ENERGY CORP COM COM 049560105 524,825 15,318 3.01 29,253 20.37 0.0174
2014-11-14 2014-09-30 13F ATMOS ENERGY CORP COM COM 049560105 509,507 2,074 0.41 24,303 -10.31 0.0158
2014-08-13 2014-06-30 13F ATMOS ENERGY CORP COM COM 049560105 507,433 4,072 0.81 27,096 14.22 0.0175
2014-05-14 2014-03-31 13F ATMOS ENERGY CORP COM COM 049560105 503,361 67,576 15.51 23,723 19.86 0.0159
2014-02-14 2013-12-31 13F ATMOS ENERGY CORP COM COM 049560105 435,785 69,148 18.86 19,793 26.76 0.0137
2013-11-14 2013-09-30 13F ATMOS ENERGY CORP COM COM 049560105 366,637 23,036 6.70 15,615 10.68 0.0125
2013-08-14 2013-06-30 13F ATMOS ENERGY CORP COM COM 049560105 343,601 343,601 14,108 0.0124
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.