Atmos Energy Corporation
US ˙ NYSE ˙ US0495601058

SecurityATO / Atmos Energy Corporation
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership121,604 shares
Latest Disclosed Value $ 22,463
Natixis Advisors, L.p. reports 4.40% increase in ownership of ATO / Atmos Energy Corporation

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 121,604 shares of Atmos Energy Corporation (US:ATO) valued at $22,462,691 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 116,484 shares of Atmos Energy Corporation. This represents a change in shares of 4.40% during the quarter. The current value of the position is $20,465,953 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)
2026-05-13 2026-03-31 13F ATMOS ENERGY COM 049560105 121,604 5,120 4.40 22 15.79 0.0312
2026-02-10 2025-12-31 13F ATMOS ENERGY COM 049560105 116,484 -14,348 -10.97 20 -13.64 0.0277
2025-11-13 2025-09-30 13F ATMOS ENERGY COM 049560105 130,832 -1,761 -1.33 22 10.00 0.0326
2025-08-13 2025-06-30 13F ATMOS ENERGY COM 049560105 132,593 16,825 14.53 20 17.65 0.0324
2025-05-08 2025-03-31 13F ATMOS ENERGY COM 049560105 115,768 23,922 26.05 18 41.67 0.0331
2025-02-10 2024-12-31 13F ATMOS ENERGY COM 049560105 91,846 3,176 3.58 13 0.00 0.0239
2024-11-06 2024-09-30 13F ATMOS ENERGY COM 049560105 88,670 4,718 5.62 12 33.33 0.0240
2024-08-01 2024-06-30 13F ATMOS ENERGY COM 049560105 83,952 7,732 10.14 10 0.00 0.0213
2024-04-25 2024-03-31 13F ATMOS ENERGY COM 049560105 76,220 3,012 4.11 9 12.50 0.0208
2024-02-06 2023-12-31 13F ATMOS ENERGY COM 049560105 73,208 -6,923 -8.64 8 0.00 0.0223
2023-11-13 2023-09-30 13F ATMOS ENERGY COM 049560105 80,131 932 1.18 8 -11.11 0.0260
2023-08-15 2023-06-30 13F ATMOS ENERGY COM 049560105 79,199 5,127 6.92 9 12.50 0.0285
2023-05-11 2023-03-31 13F ATMOS ENERGY COM 049560105 74,072 6,531 9.67 8 14.29 0.0286
2023-01-27 2022-12-31 13F ATMOS ENERGY COM 049560105 67,541 2,003 3.06 8 -99.90 0.0286
2022-11-14 2022-09-30 13F ATMOS ENERGY CP COM 049560105 65,538 5,332 8.86 6,675 -1.10 0.0282
2022-08-12 2022-06-30 13F ATMOS ENERGY COM 049560105 60,206 9,314 18.30 6,749 10.99 0.0297
2022-05-12 2022-03-31 13F ATMOS ENERGY COM 049560105 50,892 6,068 13.54 6,081 29.49 0.0232
2022-02-08 2021-12-31 13F ATMOS ENERGY COM 049560105 44,824 5,887 15.12 4,696 36.75 0.0179
2021-11-15 2021-09-30 13F ATMOS ENERGY COM 049560105 38,937 -8,809 -18.45 3,434 -25.17 0.0141
2021-08-12 2021-06-30 13F ATMOS ENERGY COM 049560105 47,746 1,750 3.80 4,589 0.95 0.0214
2021-05-05 2021-03-31 13F ATMOS ENERGY COM 049560105 45,996 -2,433 -5.02 4,546 -1.64 0.0237
2021-02-12 2020-12-31 13F ATMOS ENERGY COM 049560105 48,429 19,225 65.83 4,622 65.54 0.0266
2020-11-12 2020-09-30 13F ATMOS ENERGY COM 049560105 29,204 -3,462 -10.60 2,792 -14.17 0.0176
2020-08-11 2020-06-30 13F ATMOS ENERGY COR COM 049560105 32,666 6,681 25.71 3,253 26.18 0.0216
2020-04-27 2020-03-31 13F ATMOS ENERGY COM 049560105 25,985 -5,444 -17.32 2,578 -26.68 0.0210
2020-02-10 2019-12-31 13F ATMOS ENERGY COM 049560105 31,429 -1,604 -4.86 3,516 -6.54 0.0248
2019-11-12 2019-09-30 13F ATMOS ENERGY COM 049560105 33,033 2,830 9.37 3,762 18.01 0.0299
2019-08-12 2019-06-30 13F ATMOS ENERGY COM 049560105 30,203 3,049 11.23 3,188 14.06 0.0260
2019-05-15 2019-03-31 13F/A-1 ATMOS ENERGY COM 049560105 27,154 1,696 6.66 2,795 18.43 0.0245
2019-05-15 2019-03-31 13F ATMOS ENERGY COM 049560105 27,154 1,696 2,795
2019-02-13 2018-12-31 13F/A-1 ATMOS ENERGY COM 049560105 25,458 14,783 138.48 2,360 135.53 0.0233
2019-02-13 2018-12-31 13F ATMOS ENERGY COM 049560105 25,458 14,783 2,360
2018-11-13 2018-09-30 13F ATMOS ENERGY COM 049560105 10,675 -1,278 -10.69 1,002 -6.96 0.0088
2018-08-14 2018-06-30 13F/A-1 ATMOS ENERGY COM 049560105 11,953 625 5.52 1,077 12.89 0.0103
2018-08-14 2018-06-30 13F ATMOS ENERGY COM 049560105 11,953 1,077
2018-05-10 2018-03-31 13F ATMOS ENERGY COM 049560105 11,328 11,328 954 0.0094
2016-02-12 2015-12-31 13F ATMOS ENERGY COM 049560105 0 0 0 0.0000
2015-11-12 2015-09-30 13F ATMOS ENERGY COM 049560105 0 0 0 0.0000
2014-11-03 2014-09-30 13F ATMOS ENERGY COM 049560105 0 -72,578 -100.00 0 -100.00
2014-08-13 2014-06-30 13F ATMOS ENERGY COM 049560105 72,578 -115,168 -61.34 3,876 -56.20 0.0555
2014-05-13 2014-03-31 13F ATMOS ENERGY COM 049560105 187,746 -6,854 -3.52 8,849 0.11 0.1362
2014-02-12 2013-12-31 13F ATMOS ENERGY COM 049560105 194,600 -6,010 -3.00 8,839 3.45 0.1447
2013-10-30 2013-09-30 13F ATMOS ENERGY COM 049560105 200,610 -4,963 -2.41 8,544 1.22 0.1573
2013-07-19 2013-06-30 13F ATMOS ENERGY COM 049560105 205,573 205,573 8,441 0.1682
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.