Atmos Energy Corporation
MX ˙ BMV ˙ US0495601058
SecurityMX:ATO / Atmos Energy Corporation
InstitutionRockefeller Capital Management L.P.
Latest Disclosed Ownership13,833 shares
Latest Disclosed Value $ 2,555,433
Rockefeller Capital Management L.P. reports 5.40% decrease in ownership of ATO / Atmos Energy Corporation

On May 14, 2026 - Rockefeller Capital Management L.P. filed a 13F-HR form disclosing ownership of 13,833 shares of Atmos Energy Corporation (MX:ATO) valued at $2,555,433 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 16, 2026 disclosing 14,623 shares of Atmos Energy Corporation. This represents a change in shares of -5.40% 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)
2026-05-14 2026-03-31 13F ATMOS ENERGY COM 049560105 13,833 -790 -5.40 2,555 4.24 0.0045
2026-03-16 2025-12-31 13F/A-1 ATMOS ENERGY COM 049560105 14,623 5,312 57.05 2,451 54.15 0.0044
2026-02-14 2025-12-31 13F ATMOS ENERGY COM 049560105 14,628 5,317 2,452 0.0022
2025-11-14 2025-09-30 13F ATMOS ENERGY COM 049560105 9,311 9,311 1,590 0.0031
2024-05-14 2024-03-31 13F ATMOS ENERGY COM 049560105 0 -11,550 -100.00 0 -100.00
2024-02-14 2023-12-31 13F ATMOS ENERGY COM 049560105 11,550 -5,418 -31.93 1,339 -25.54 0.0045
2023-11-14 2023-09-30 13F ATMOS ENERGY COM 049560105 16,968 -3,536 -17.25 1,797 -24.65 0.0069
2023-08-14 2023-06-30 13F ATMOS ENERGY COM 049560105 20,504 -657 -3.10 2,385 119,150.00 0.0092
2023-05-16 2023-03-31 13F ATMOS ENERGY COM 049560105 21,161 3,331 18.68 2 -99.90 0.0102
2023-03-06 2022-12-31 13F ATMOS ENERGY COM 049560105 17,830 321 1.83 1,997 12.00 0.0100
2022-11-02 2022-09-30 13F ATMOS ENERGY COM 049560105 17,509 254 1.47 1,783 -7.76 0.0092
2022-08-12 2022-06-30 13F ATMOS ENERGY COM 049560105 17,255 -1,943 -10.12 1,933 -15.70 0.0103
2022-05-13 2022-03-31 13F ATMOS ENERGY COM 049560105 19,198 -62 -0.32 2,293 13.68 0.0111
2022-02-14 2021-12-31 13F ATMOS ENERGY COM 049560105 19,260 5,882 43.97 2,017 71.08 0.0094
2021-11-12 2021-09-30 13F ATMOS ENERGY COM 049560105 13,378 11,548 631.04 1,179 573.71 0.0062
2021-08-10 2021-06-30 13F ATMOS ENERGY COM 049560105 1,830 932 103.79 175 98.86 0.0010
2021-05-11 2021-03-31 13F ATMOS ENERGY COM 049560105 898 -94 -9.48 88 -6.38 0.0006
2021-02-12 2020-12-31 13F ATMOS ENERGY COM 049560105 992 -1,534 -60.73 94 -61.00 0.0007
2020-11-13 2020-09-30 13F ATMOS ENERGY COM 049560105 2,526 1,367 117.95 241 109.57 0.0023
2020-08-12 2020-06-30 13F ATMOS ENERGY COM 049560105 1,159 321 38.31 115 38.55 0.0012
2020-05-12 2020-03-31 13F ATMOS ENERGY COM 049560105 838 378 82.17 83 62.75 0.0011
2020-02-07 2019-12-31 13F ATMOS ENERGY COM 049560105 460 18 4.07 51 2.00 0.0006
2019-11-12 2019-09-30 13F ATMOS ENERGY COM 049560105 442 -58 -11.60 50 -5.66 0.0007
2019-08-09 2019-06-30 13F ATMOS ENERGY COM 049560105 500 489 4,445.45 53 5,200.00 0.0007
2019-05-10 2019-03-31 13F ATMOS ENERGY COM 049560105 11 11 1 0.0000
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.