Atmos Energy Corporation
MX ˙ BMV ˙ US0495601058
SecurityMX:ATO / Atmos Energy Corporation
InstitutionAmeriprise Financial Inc
Latest Disclosed Ownership65,071 shares
Latest Disclosed Value $ 12,023,070
Ameriprise Financial Inc reports 53.90% decrease in ownership of ATO / Atmos Energy Corporation

On May 15, 2026 - Ameriprise Financial Inc filed a 13F-HR form disclosing ownership of 65,071 shares of Atmos Energy Corporation (MX:ATO) valued at $12,023,070 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 141,138 shares of Atmos Energy Corporation. This represents a change in shares of -53.90% 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 65,071 -76,067 -53.90 12,023 -49.18 0.0005
2026-02-17 2025-12-31 13F ATMOS ENERGY COM 049560105 141,138 -4,335 -2.98 23,659 -4.78 0.0053
2025-11-14 2025-09-30 13F ATMOS ENERGY COM 049560105 145,473 -1,636 -1.11 24,846 10.27 0.0057
2025-08-14 2025-06-30 13F ATMOS ENERGY COM 049560105 147,109 20,914 16.57 22,532 15.51 0.0056
2025-05-14 2025-03-31 13F ATMOS ENERGY COM 049560105 126,195 15,236 13.73 19,507 26.20 0.0053
2025-02-14 2024-12-31 13F ATMOS ENERGY COM 049560105 110,959 -20,889 -15.84 15,457 -15.48 0.0040
2024-11-14 2024-09-30 13F ATMOS ENERGY COM 049560105 131,848 38,671 41.50 18,289 68.26 0.0047
2024-08-14 2024-06-30 13F ATMOS ENERGY COM 049560105 93,177 -26,003 -21.82 10,869 -23.28 0.0029
2024-05-15 2024-03-31 13F ATMOS ENERGY COM 049560105 119,180 9,794 8.95 14,167 11.72 0.0039
2024-02-14 2023-12-31 13F ATMOS ENERGY COM 049560105 109,386 400 0.37 12,681 9.85 0.0038
2023-11-14 2023-09-30 13F ATMOS ENERGY COM 049560105 108,986 42,407 63.69 11,545 49.05 0.0038
2023-08-14 2023-06-30 13F ATMOS ENERGY COM 049560105 66,579 -4,105 -5.81 7,745 -4.31 0.0024
2023-05-22 2023-03-31 13F/A-1 ATMOS ENERGY COM 049560105 70,684 283 0.40 8,095 2.36 0.0027
2023-05-15 2023-03-31 13F ATMOS ENERGY COM 049560105 70,684 283 8,095 0.0005
2023-02-14 2022-12-31 13F ATMOS ENERGY COM 049560105 70,401 -6,537 -8.50 7,907 0.89 0.0027
2022-11-14 2022-09-30 13F ATMOS ENERGY COM 049560105 76,938 16,309 26.90 7,837 15.35 0.0029
2022-08-15 2022-06-30 13F ATMOS ENERGY COM 049560105 60,629 9,579 18.76 6,794 11.89 0.0024
2022-05-16 2022-03-31 13F ATMOS ENERGY COM 049560105 51,050 -22,755 -30.83 6,072 -17.34 0.0018
2022-02-14 2021-12-31 13F ATMOS ENERGY COM 049560105 73,805 21,078 39.98 7,346 57.98 0.0020
2021-11-15 2021-09-30 13F ATMOS ENERGY COM 049560105 52,727 -20,381 -27.88 4,650 -33.69 0.0015
2021-08-16 2021-06-30 13F ATMOS ENERGY COM 049560105 73,108 1,507 2.10 7,013 -0.92 0.0022
2021-05-17 2021-03-31 13F ATMOS ENERGY COM 049560105 71,601 -52,230 -42.18 7,078 -40.10 0.0024
2021-02-12 2020-12-31 13F ATMOS ENERGY COM 049560105 123,831 -90,235 -42.15 11,817 -42.16 0.0042
2020-11-16 2020-09-30 13F ATMOS ENERGY COM 049560105 214,066 32,781 18.08 20,429 13.14 0.0083
2020-08-14 2020-06-30 13F ATMOS ENERGY COM 049560105 181,285 16,362 9.92 18,056 10.50 0.0077
2020-05-15 2020-03-31 13F ATMOS ENERGY COM 049560105 164,923 35,893 27.82 16,341 13.23 0.0086
2020-02-14 2019-12-31 13F ATMOS ENERGY COM 049560105 129,030 87,824 213.13 14,432 207.52 0.0060
2019-11-14 2019-09-30 13F ATMOS ENERGY COM 049560105 41,206 1,447 3.64 4,693 11.79 0.0021
2019-08-14 2019-06-30 13F ATMOS ENERGY COM 049560105 39,759 397 1.01 4,198 3.63 0.0019
2019-05-15 2019-03-31 13F ATMOS ENERGY COM 049560105 39,362 -269,021 -87.24 4,051 -85.83 0.0019
2019-02-14 2018-12-31 13F ATMOS ENERGY COM 049560105 308,383 3,700 1.21 28,594 -0.07 0.0143
2018-11-14 2018-09-30 13F ATMOS EGY COORATION COM 049560105 304,683 -3,737 -1.21 28,614 2.92 0.0100
2018-08-14 2018-06-30 13F ATMOS ENERGY COM 049560105 308,420 -2,637 -0.85 27,801 6.10 0.0123
2018-05-14 2018-03-31 13F ATMOS ENERGY COM 049560105 311,057 1,426 0.46 26,203 -1.47 0.0119
2018-02-12 2017-12-31 13F ATMOS ENERGY COM 049560105 309,631 -31,770 -9.31 26,595 -7.09 0.0121
2017-11-07 2017-09-30 13F ATMOS ENERGY COM 049560105 341,401 -10,458 -2.97 28,623 -1.93 0.0136
2017-08-10 2017-06-30 13F ATMOS ENERGY COM 049560105 351,859 244 0.07 29,185 5.08 0.0146
2017-05-05 2017-03-31 13F ATMOS ENERGY COM 049560105 351,615 1,353 0.39 27,774 6.93 0.0144
2017-02-03 2016-12-31 13F ATMOS ENERGY COM 049560105 350,262 9,584 2.81 25,973 2.38 0.0142
2016-11-08 2016-09-30 13F ATMOS ENERGY COM 049560105 340,678 10,374 3.14 25,370 -5.55 0.0142
2016-08-08 2016-06-30 13F ATMOS ENERGY COM 049560105 330,304 28,945 9.60 26,861 19.99 0.0157
2016-05-12 2016-03-31 13F ATMOS ENERGY COM 049560105 301,359 -17,098 -5.37 22,386 11.51 0.0134
2016-02-11 2015-12-31 13F ATMOS ENERGY COM 049560105 318,457 -6,509 -2.00 20,075 6.22 0.0118
2015-11-12 2015-09-30 13F ATMOS ENERGY COM 049560105 324,966 -5,105 -1.55 18,900 11.66 0.0117
2015-08-13 2015-06-30 13F ATMOS ENERGY COM 049560105 330,071 -178,571 -35.11 16,926 -39.83 0.0096
2015-05-14 2015-03-31 13F ATMOS ENERGY COM 049560105 508,642 -15,412 -2.94 28,128 -3.71 0.0161
2015-02-13 2014-12-31 13F ATMOS ENERGY COM 049560105 524,054 -77,616 -12.90 29,211 1.78 0.0170
2014-11-14 2014-09-30 13F ATMOS ENERGY COM 049560105 601,670 -31,081 -4.91 28,700 -15.06 0.0173
2014-08-13 2014-06-30 13F ATMOS ENERGY COM 049560105 632,751 4,601 0.73 33,790 14.13 0.0199
2014-05-14 2014-03-31 13F ATMOS ENERGY COM 049560105 628,150 64,230 11.39 29,607 15.59 0.0178
2014-02-14 2013-12-31 13F ATMOS ENERGY COM 049560105 563,920 -25,945 -4.40 25,614 1.95 0.0155
2013-11-14 2013-09-30 13F ATMOS ENERGY COM 049560105 589,865 90,800 18.19 25,123 22.59 0.0165
2013-08-14 2013-06-30 13F ATMOS ENERGY COM 049560105 499,065 499,065 20,493 0.0142
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.