Atmos Energy Corporation
IT ˙ BIT ˙ US0495601058
147,85 € ↓ -7,15 (-4,61%)
2026-06-04
DEL PRIS
SecurityIT:1ATO / Atmos Energy Corporation
InstitutionMackenzie Financial Corp
Latest Disclosed Ownership31,551 shares
Latest Disclosed Value $ 5,828,101
Mackenzie Financial Corp reports 2.08% increase in ownership of 1ATO / Atmos Energy Corporation

On May 13, 2026 - Mackenzie Financial Corp filed a 13F-HR form disclosing ownership of 31,551 shares of Atmos Energy Corporation (IT:1ATO) valued at $4,953,507 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 30,907 shares of Atmos Energy Corporation. This represents a change in shares of 2.08% during the quarter. The current value of the position is $4,664,815 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.

Upgrade to unlock premium data and export to Excel .

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 31,551 644 2.08 5,828 12.08 0.0070
2026-02-18 2025-12-31 13F ATMOS ENERGY COM 049560105 30,907 13,161 74.16 5,200 71.62 0.0062
2025-11-13 2025-09-30 13F ATMOS ENERGY COM 049560105 17,746 -1,949 -9.90 3,030 -0.16 0.0037
2025-08-13 2025-06-30 13F ATMOS ENERGY COM 049560105 19,695 106 0.54 3,035 0.23 0.0039
2025-05-07 2025-03-31 13F ATMOS ENERGY COM 049560105 19,589 31 0.16 3,028 11.20 0.0043
2025-05-02 2024-12-31 13F/A-2 ATMOS ENERGY COM 049560105 19,558 6,372 48.32 2,724 48.88 0.0037
2025-02-20 2024-12-31 13F/A-1 ATMOS ENERGY COM 049560105 19,558 6,372 2,724 0.0035
2025-02-14 2024-12-31 13F Atmos Energy Common Stock 049560105 19,558 6,372 2,704 0.0039
2024-11-13 2024-09-30 13F ATMOS ENERGY COM 049560105 13,186 -26,821 -67.04 1,829 -60.80 0.0025
2024-08-14 2024-06-30 13F ATMOS ENERGY COM 049560105 40,007 -51,824 -56.43 4,667 -57.25 0.0069
2024-05-10 2024-03-31 13F ATMOS ENERGY COM 049560105 91,831 56,792 162.08 10,916 168.78 0.0157
2024-01-30 2023-12-31 13F ATMOS ENERGY COM 049560105 35,039 -847 -2.36 4,061 8.47 0.0061
2023-10-25 2023-09-30 13F ATMOS ENERGY COM 049560105 35,886 18,262 103.62 3,744 81.13 0.0063
2023-08-03 2023-06-30 13F ATMOS ENERGY COM 049560105 17,624 5,536 45.80 2,067 52.21 0.0031
2023-04-24 2023-03-31 13F ATMOS ENERGY COM 049560105 12,088 604 5.26 1,358 5.52 0.0021
2023-02-14 2022-12-31 13F ATMOS ENERGY COM 049560105 11,484 140 1.23 1,287 11.43 0.0021
2022-10-07 2022-09-30 13F Atmos Energy Common Stock 049560105 11,344 1,567 16.03 1,155 5.38 0.0020
2022-08-10 2022-06-30 13F ATMOS ENERGY COM 049560105 9,777 7,884 416.48 1,096 384.96 0.0018
2022-05-13 2022-03-31 13F ATMOS ENERGY COM 049560105 1,893 -954 -33.51 226 -24.16 0.0003
2022-02-14 2021-12-31 13F ATMOS ENERGY COM 049560105 2,847 -6,028 -67.92 298 -61.94 0.0004
2021-11-08 2021-09-30 13F ATMOS ENERGY COM 049560105 8,875 2,612 41.71 783 30.07 0.0011
2021-08-11 2021-06-30 13F ATMOS ENERGY COM 049560105 6,263 355 6.01 602 3.08 0.0008
2021-05-14 2021-03-31 13F ATMOS ENERGY COM 049560105 5,908 1,970 50.03 584 55.32 0.0009
2021-02-10 2020-12-31 13F ATMOS ENERGY COM 049560105 3,938 445 12.74 376 12.57 0.0008
2020-11-13 2020-09-30 13F ATMOS ENERGY COM 049560105 3,493 80 2.34 334 -1.76 0.0008
2020-08-13 2020-06-30 13F ATMOS ENERGY COM 049560105 3,413 -697 -16.96 340 -16.67 0.0009
2020-05-14 2020-03-31 13F ATMOS ENERGY COM 049560105 4,110 399 10.75 408 -1.69 0.0013
2020-02-13 2019-12-31 13F ATMOS ENERGY COM 049560105 3,711 635 20.64 415 18.57 0.0010
2019-11-14 2019-09-30 13F ATMOS ENERGY COM 049560105 3,076 -481 -13.52 350 -6.67 0.0009
2019-08-23 2019-06-30 13F/A-1 ATMOS ENERGY COM 049560105 3,557 440 14.12 375 16.82 0.0010
2019-08-14 2019-06-30 13F ATMOS ENERGY COM 049560105 3,557 440 375
2019-05-15 2019-03-31 13F ATMOS ENERGY COM 049560105 3,117 -653 -17.32 321 -8.29 0.0008
2019-02-06 2018-12-31 13F ATMOS ENERGY COM 049560105 3,770 -3,600 -48.85 350 -49.42 0.0009
2018-11-15 2018-09-30 13F ATMOS ENERGY COM 049560105 7,370 3,849 109.32 692 118.30 0.0017
2018-08-13 2018-06-30 13F ATMOS ENERGY COM 049560105 3,521 548 18.43 317 26.80 0.0008
2018-05-14 2018-03-31 13F/A-1 ATMOS ENERGY COM 049560105 2,973 -13,827 -82.30 250 -68.43 0.0006
2018-05-14 2018-03-31 13F ATMOS ENERGY COM 049560105 2,973 250
2014-05-14 2014-03-31 13F ATMOS ENERGY COM 049560105 16,800 0 0.00 792 3.80 0.0039
2014-02-11 2013-12-31 13F/A-1 ATMOS ENERGY COM 049560105 16,800 -35,600 -67.94 763 -65.82 0.0039
2014-02-03 2013-12-31 13F ATMOS ENERGY COM 049560105 16,800 763
2013-11-12 2013-09-30 13F ATMOS ENERGY COM 049560105 52,400 13,000 32.99 2,232 37.95 0.0113
2013-08-20 2013-06-30 13F/A-1 ATMOS ENERGY COM 049560105 39,400 39,400 1,618 0.0077
2013-08-09 2013-06-30 13F ATMOS ENERGY COM 049560105 39,400 1,618 0.0077
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.