Atmos Energy Corporation
US ˙ NYSE ˙ US0495601058

SecurityATO / Atmos Energy Corporation
InstitutionHancock Whitney Corp
Latest Disclosed Ownership15,718 shares
Latest Disclosed Value $ 2,985,880
Hancock Whitney Corp reports 1.16% decrease in ownership of ATO / Atmos Energy Corporation

On May 15, 2026 - Hancock Whitney Corp filed a 13F-HR form disclosing ownership of 15,718 shares of Atmos Energy Corporation (US:ATO) valued at $2,903,429 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 15,902 shares of Atmos Energy Corporation. This represents a change in shares of -1.16% during the quarter. The current value of the position is $2,645,339 USD.

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 15,718 -184 -1.16 2,986 12.01 0.0519
2026-02-17 2025-12-31 13F ATMOS ENERGY COM 049560105 15,902 -381 -2.34 2,666 -4.14 0.0481
2025-11-17 2025-09-30 13F ATMOS ENERGY COM 049560105 16,283 -12 -0.07 2,780 10.71 0.0506
2025-08-14 2025-06-30 13F ATMOS ENERGY COM 049560105 16,295 282 1.76 2,511 1.45 0.0480
2025-05-15 2025-03-31 13F ATMOS ENERGY COM 049560105 16,013 -261 -1.60 2,475 9.22 0.0808
2025-02-14 2024-12-31 13F ATMOS ENERGY COM 049560105 16,274 -97 -0.59 2,266 -0.18 0.0717
2024-11-13 2024-09-30 13F ATMOS ENERGY COM 049560105 16,371 -5 -0.03 2,271 18.85 0.0732
2024-08-13 2024-06-30 13F ATMOS ENERGY COMMON STOCK 049560105 16,376 -114 -0.69 1,910 -2.55 0.0648
2024-05-16 2024-03-31 13F ATMOS ENERGY COMMON STOCK 049560105 16,490 282 1.74 1,960 4.37 0.0677
2024-02-14 2023-12-31 13F ATMOS ENERGY COM 049560105 16,208 331 2.08 1,879 11.72 0.0697
2023-11-13 2023-09-30 13F ATMOS ENERGY COM 049560105 15,877 -687 -4.15 1,682 -12.77 0.0693
2023-11-13 2023-06-30 13F/A-1 ATMOS ENERGY COM 049560105 16,564 -246 -1.46 1,927 2.01 0.0758
2023-08-10 2023-06-30 13F ATMOS ENERGY COM 049560105 16,564 -246 2 0.0758
2023-11-13 2023-03-31 13F/A-2 ATMOS ENERGY COM 049560105 16,810 -2,677 -13.74 1,889 -13.51 0.0758
2023-05-16 2023-03-31 13F/A-1 ATMOS ENERGY COM 049560105 16,810 -2,677 2 0.0404
2023-05-15 2023-03-31 13F ATMOS ENERGY COM 049560105 19,487 0 2 0.0453
2023-11-13 2022-12-31 13F/A-1 ATMOS ENERGY COM 049560105 19,487 -104 -0.53 2,184 9.42 0.0843
2023-02-03 2022-12-31 13F ATMOS ENERGY COM 049560105 19,487 -104 2 0.0843
2022-10-26 2022-09-30 13F ATMOS ENERGY COM 049560105 19,591 -746 -3.67 1,996 -12.46 0.0853
2022-08-08 2022-06-30 13F ATMOS ENERGY COM 049560105 20,337 -344 -1.66 2,280 -7.73 0.0912
2022-05-12 2022-03-31 13F ATMOS ENERGY COM 049560105 20,681 332 1.63 2,471 15.90 0.0841
2022-01-25 2021-12-31 13F ATMOS ENERGY COM 049560105 20,349 -838 -3.96 2,132 14.07 0.0670
2021-11-04 2021-09-30 13F ATMOS ENERGY COM 049560105 21,187 -333 -1.55 1,869 -9.62 0.0653
2021-08-09 2021-06-30 13F ATMOS ENERGY COM 049560105 21,520 -2,085 -8.83 2,068 -11.36 0.0660
2021-05-14 2021-03-31 13F ATMOS ENERGY COM 049560105 23,605 1,146 5.10 2,333 8.87 0.0792
2021-02-09 2020-12-31 13F ATMOS ENERGY COM 049560105 22,459 -5,020 -18.27 2,143 -18.42 0.0716
2020-11-05 2020-09-30 13F ATMOS ENERGY COM 049560105 27,479 -13,117 -32.31 2,627 -35.01 0.0970
2020-07-30 2020-06-30 13F ATMOS ENERGY COM 049560105 40,596 11,388 38.99 4,042 39.48 0.1549
2020-05-08 2020-03-31 13F ATMOS ENERGY COM 049560105 29,208 -5,586 -16.05 2,898 -25.54 0.1136
2020-02-06 2019-12-31 13F ATMOS ENERGY COM 049560105 34,794 -13,309 -27.67 3,892 -28.95 0.1254
2019-10-29 2019-09-30 13F ATMOS ENERGY COM 049560105 48,103 -16,465 -25.50 5,478 -19.63 0.1796
2019-08-29 2019-06-30 13F ATMOS ENERGY COM 049560105 64,568 -4,064 -5.92 6,816 -3.51 0.2182
2019-05-13 2019-03-31 13F ATMOS ENERGY COM 049560105 68,632 -9,667 -12.35 7,064 -2.70 0.2266
2019-02-14 2018-12-31 13F ATMOS ENERGY COM 049560105 78,299 -9,405 -10.72 7,260 -11.85 0.2453
2018-11-14 2018-09-30 13F ATMOS ENERGY COM 049560105 87,704 -8,147 -8.50 8,236 -4.68 0.2331
2018-08-14 2018-06-30 13F ATMOS ENERGY COMMON STOCK 049560105 95,851 -19,960 -17.23 8,640 -11.44 0.3978
2018-05-15 2018-03-31 13F ATMOS ENERGY COMMON STOCK 049560105 115,811 -14,697 -11.26 9,756 -12.96 0.4373
2018-02-12 2017-12-31 13F ATMOS ENERGY COM 049560105 130,508 12 0.01 11,209 2.45 0.4641
2017-11-14 2017-09-30 13F ATMOS ENERGY COM 049560105 130,496 -31,547 -19.47 10,941 -18.60 0.4636
2017-08-11 2017-06-30 13F ATMOS ENERGY COM 049560105 162,043 0 0.00 13,441 5.01 0.5682
2017-05-09 2017-03-31 13F ATMOS ENERGY COM 049560105 162,043 -165 -0.10 12,800 6.42 0.5336
2017-02-14 2016-12-31 13F ATMOS ENERGY COM 049560105 162,208 0 0.00 12,028 -0.43 0.4472
2016-11-08 2016-09-30 13F ATMOS ENERGY COM 049560105 162,208 -660 -0.41 12,080 -8.79 0.4779
2016-08-09 2016-06-30 13F ATMOS ENERGY COM 049560105 162,868 53 0.03 13,244 9.54 0.5523
2016-06-07 2016-03-31 13F/A-1 ATMOS ENERGY COM 049560105 162,815 -4,000 -2.40 12,091 14.98 0.5079
2016-05-13 2016-03-31 13F ATMOS ENERGY COMMON STOCK 049560105 162,815 12,091
2016-02-12 2015-12-31 13F ATMOS ENERGY COM 049560105 166,815 0 0.00 10,516 8.36 0.4406
2015-11-16 2015-09-30 13F ATMOS ENERGY COM 049560105 166,815 2,123 1.29 9,705 6.57 0.4051
2015-08-13 2015-06-30 13F ATMOS ENERGY COM 049560105 164,692 0 0.00 9,107 0.00 0.3476
2015-05-14 2015-03-31 13F ATMOS ENERGY COM 049560105 164,692 -4,628 -2.73 9,107 -3.51 0.3476
2015-02-17 2014-12-31 13F ATMOS ENERGY COM 049560105 169,320 2,700 1.62 9,438 18.75 0.3586
2014-11-13 2014-09-30 13F ATMOS ENERGY COM 049560105 166,620 0 0.00 7,948 -10.68 0.3025
2014-08-14 2014-06-30 13F ATMOS ENERGY COM 049560105 166,620 0 0.00 8,898 13.31 0.3224
2014-05-15 2014-03-31 13F ATMOS ENERGY COM 049560105 166,620 20,000 13.64 7,853 17.93 0.3062
2014-02-14 2013-12-31 13F ATMOS ENERGY COM 049560105 146,620 11,620 8.61 6,659 15.81 0.2735
2013-11-14 2013-09-30 13F ATMOS ENERGY COM 049560105 135,000 25,000 22.73 5,750 27.30 0.2646
2013-08-06 2013-06-30 13F ATMOS ENERGY COM 049560105 110,000 110,000 4,517 0.2250
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.