Atmos Energy Corporation
MX ˙ BMV ˙ US0495601058
SecurityMX:ATO / Atmos Energy Corporation
InstitutionCohen & Steers, Inc.
Latest Disclosed Ownership800,246 shares
Latest Disclosed Value $ 147,821
Cohen & Steers, Inc. reports 19.19% increase in ownership of ATO / Atmos Energy Corporation

On May 15, 2026 - Cohen & Steers, Inc. filed a 13F-HR form disclosing ownership of 800,246 shares of Atmos Energy Corporation (MX:ATO) valued at $147,821 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 671,396 shares of Atmos Energy Corporation. This represents a change in shares of 19.19% 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 800,246 128,850 19.19 148 31.25 0.2568
2026-02-13 2025-12-31 13F Atmos Energy COM 049560105 671,396 29,400 4.58 113 2.75 0.2035
2025-11-14 2025-09-30 13F Atmos Energy COM 049560105 641,996 641,996 110 0.1977
2025-05-15 2025-03-31 13F Atmos Energy COM 049560105 0 -410 -100.00 0 0.0000
2025-02-13 2024-12-31 13F Atmos Energy COM 049560105 410 -1,075,541 -99.96 0 -100.00 0.0001
2024-11-14 2024-09-30 13F Atmos Energy COM 049560105 1,075,951 198,286 22.59 149 46.08 0.2656
2024-08-13 2024-06-30 13F Atmos Energy COM 049560105 877,665 543 0.06 102 -1.92 0.2146
2024-05-15 2024-03-31 13F Atmos Energy COM 049560105 877,122 876,761 242,870.08 104 0.2182
2024-02-14 2023-12-31 13F Atmos Energy COM 049560105 361 0 0.00 0 0.0001
2023-11-14 2023-09-30 13F Atmos Energy COM 049560105 361 0 0.00 0 0.0001
2023-08-14 2023-06-30 13F Atmos Energy COM 049560105 361 0 0.00 0 0.0001
2023-05-15 2023-03-31 13F Atmos Energy COM 049560105 361 -570,746 -99.94 0 -100.00 0.0001
2023-02-14 2022-12-31 13F Atmos Energy COM 049560105 571,107 571,107 64,004 0.1413
2022-08-15 2022-06-30 13F Atmos Energy COM 049560105 0 -24,316 -100.00 0 -100.00
2022-05-16 2022-03-31 13F Atmos Energy COM 049560105 24,316 8,691 55.62 2,906 77.52 0.0049
2022-02-14 2021-12-31 13F Atmos Energy COM 049560105 15,625 15,625 1,637 0.0027
2021-02-16 2020-12-31 13F Atmos Energy COM 049560105 0 -263,386 -100.00 0 -100.00
2020-11-16 2020-09-30 13F Atmos Energy COM 049560105 263,386 -2,296 -0.86 25,177 -4.84 0.0670
2020-08-14 2020-06-30 13F Atmos Energy COM 049560105 265,682 -419,421 -61.22 26,457 -61.08 0.0738
2020-05-15 2020-03-31 13F Atmos Energy COM 049560105 685,103 -39,468 -5.45 67,983 -16.12 0.2194
2020-02-14 2019-12-31 13F Atmos Energy COM 049560105 724,571 -627,744 -46.42 81,051 -47.37 0.2016
2019-11-14 2019-09-30 13F Atmos Energy COM 049560105 1,352,315 -46,667 -3.34 154,015 4.29 0.3859
2019-08-14 2019-06-30 13F Atmos Energy COM 049560105 1,398,982 -18,528 -1.31 147,677 1.22 0.4096
2019-05-15 2019-03-31 13F Atmos Energy COM 049560105 1,417,510 -20,468 -1.42 145,904 9.43 0.4048
2019-02-14 2018-12-31 13F Atmos Energy COM 049560105 1,437,978 -20,695 -1.42 133,329 -2.67 0.4242
2018-11-16 2018-09-30 13F/A-1 Atmos Energy COM 049560105 1,458,673 4,993 0.34 136,984 4.54 0.3983
2018-11-14 2018-09-30 13F Atmos Energy COM 049560105 1,458,673 4,993 136,984
2018-08-14 2018-06-30 13F Atmos Energy COM 049560105 1,453,680 15,743 1.09 131,035 8.18 0.3752
2018-05-14 2018-03-31 13F Atmos Energy COM 049560105 1,437,937 171,835 13.57 121,132 11.39 0.3705
2018-02-14 2017-12-31 13F Atmos Energy COM 049560105 1,266,102 -60,449 -4.56 108,746 -2.22 0.3005
2017-11-14 2017-09-30 13F Atmos Energy COM 049560105 1,326,551 109,120 8.96 111,218 10.13 0.3035
2017-08-14 2017-06-30 13F Atmos Energy COM 049560105 1,217,431 34,307 2.90 100,986 8.06 0.2678
2017-05-15 2017-03-31 13F Atmos Energy COM 049560105 1,183,124 -8,970 -0.75 93,455 5.73 0.2501
2017-02-14 2016-12-31 13F Atmos Energy COM 049560105 1,192,094 -190,225 -13.76 88,394 -14.13 0.2441
2016-11-14 2016-09-30 13F Atmos Energy COM 049560105 1,382,319 -73,576 -5.05 102,941 -13.05 0.2640
2016-08-22 2016-06-30 13F/A-2 Atmos Energy COM 049560105 1,455,895 107,238 7.95 118,393 18.21 0.3064
2016-08-18 2016-06-30 13F/A-1 Atmos Energy COM 049560105 54,400 -1,401,495 4,695 0.0123
2016-08-15 2016-06-30 13F Atmos Energy COM 049560105 1,455,895 118,393
2016-05-16 2016-03-31 13F Atmos Energy COM 049560105 1,348,657 140,295 11.61 100,151 31.47 0.2773
2016-02-16 2015-12-31 13F Atmos Energy COM 049560105 1,208,362 105,839 9.60 76,175 18.75 0.2189
2015-11-16 2015-09-30 13F Atmos Energy COM 049560105 1,102,523 125,504 12.85 64,145 28.03 0.1941
2015-08-14 2015-06-30 13F Atmos Energy COM 049560105 977,019 -71,992 -6.86 50,102 -13.63 0.1520
2015-05-15 2015-03-31 13F Atmos Energy COM 049560105 1,049,011 528,818 101.66 58,010 100.06 0.1570
2015-02-17 2014-12-31 13F Atmos Energy COM 049560105 520,193 140,342 36.95 28,996 60.03 0.4008
2014-11-14 2014-09-30 13F Atmos Energy COM 049560105 379,851 -5,442 -1.41 18,119 -11.94 0.0548
2014-08-14 2014-06-30 13F Atmos Energy COM 049560105 385,293 -25,021 -6.10 20,575 6.40 0.0589
2014-05-15 2014-03-31 13F Atmos Energy COM 049560105 410,314 384,214 1,472.08 19,338 1,531.90 0.0585
2014-02-14 2013-12-31 13F Atmos Energy COM 049560105 26,100 -394,573 -93.80 1,185 -93.39 0.0039
2013-11-14 2013-09-30 13F Atmos Energy COM 049560105 420,673 6,226 1.50 17,916 5.28 0.0578
2013-08-14 2013-06-30 13F Atmos Energy COM 049560105 414,447 414,447 17,017 0.0529
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.