Atmos Energy Corporation
MX ˙ BMV ˙ US0495601058
SecurityMX:ATO / Atmos Energy Corporation
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership261,421 shares
Latest Disclosed Value $ 48,289,687
Millennium Management Llc ownership in ATO / Atmos Energy Corporation

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 261,421 shares of Atmos Energy Corporation (MX:ATO) valued at $48,289,687 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 66,985 shares of Atmos Energy Corporation. This represents a change in shares of 290.27% during the quarter.

Millennium Management Llc has a history of taking positions in derivatives of the underlying security (ATO) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:ATO / Atmos Energy Corporation Historical Put/Call Ratio
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 261,421 194,436 290.27 48,290 330.08 0.0201
2026-02-17 2025-12-31 13F ATMOS ENERGY COM 049560105 66,985 6,559 10.85 11,229 8.83 0.0047
2025-11-14 2025-09-30 13F ATMOS ENERGY COM 049560105 60,426 -31,118 -33.99 10,318 -26.87 0.0044
2025-08-14 2025-06-30 13F ATMOS ENERGY COM 049560105 91,544 81,920 851.21 14,108 848.69 0.0068
2025-05-15 2025-03-31 13F ATMOS ENERGY COM 049560105 9,624 -32,417 -77.11 1,488 -74.60 0.0008
2025-02-14 2024-12-31 13F ATMOS ENERGY COM 049560105 42,041 -182,617 -81.29 5,855 -81.21 0.0029
2024-11-14 2024-09-30 13F ATMOS ENERGY COM 049560105 224,658 -15,747 -6.55 31,162 11.12 0.0148
2024-08-14 2024-06-30 13F ATMOS ENERGY COM 049560105 240,405 -36,358 -13.14 28,043 -14.76 0.0130
2024-05-15 2024-03-31 13F ATMOS ENERGY COM 049560105 276,763 -234,890 -45.91 32,899 -44.52 0.0141
2024-02-14 2023-12-31 13F ATMOS ENERGY COM 049560105 511,653 385,528 305.67 59,301 343.86 0.0257
2023-11-14 2023-09-30 13F ATMOS ENERGY COM 049560105 126,125 63,360 100.95 13,360 82.96 0.0067
2023-08-14 2023-06-30 13F ATMOS ENERGY COM 049560105 62,765 -261,915 -80.67 7,302 -79.98 0.0036
2023-05-15 2023-03-31 13F ATMOS ENERGY COM 049560105 324,680 200,268 160.97 36,481 161.64 0.0209
2023-02-14 2022-12-31 13F ATMOS ENERGY COM 049560105 124,412 109,647 742.61 13,943 827.06 0.0077
2022-11-14 2022-09-30 13F ATMOS ENERGY COM 049560105 14,765 -255,721 -94.54 1,504 -95.04 0.0009
2022-08-15 2022-06-30 13F ATMOS ENERGY COM 049560105 270,486 266,761 7,161.37 30,321 6,713.71 0.0188
2022-05-16 2022-03-31 13F ATMOS ENERGY COM 049560105 3,725 -6,838 -64.74 445 -59.80 0.0002
2022-02-14 2021-12-31 13F ATMOS ENERGY COM 049560105 10,563 -57,160 -84.40 1,107 -81.47 0.0006
2021-11-15 2021-09-30 13F ATMOS ENERGY COM 049560105 67,723 61,387 968.86 5,973 880.79 0.0036
2021-08-16 2021-06-30 13F ATMOS ENERGY COM 049560105 6,336 -222,406 -97.23 609 -97.31 0.0004
2021-05-17 2021-03-31 13F ATMOS ENERGY COM 049560105 228,742 -323,744 -58.60 22,611 -57.11 0.0162
2021-02-16 2020-12-31 13F ATMOS ENERGY COM 049560105 552,486 526,523 2,027.97 52,724 2,024.25 0.0381
2020-11-16 2020-09-30 13F ATMOS ENERGY COM 049560105 25,963 -45,614 -63.73 2,482 -65.18 0.0031
2020-08-14 2020-06-30 13F ATMOS ENERGY COM 049560105 71,577 -131,988 -64.84 7,128 -64.71 0.0098
2020-05-14 2020-03-31 13F ATMOS ENERGY COM 049560105 203,565 69,216 51.52 20,200 34.42 0.0454
2020-02-14 2019-12-31 13F ATMOS ENERGY COM 049560105 134,349 -205,957 -60.52 15,028 -61.23 0.0188
2019-11-14 2019-09-30 13F ATMOS ENERGY COM 049560105 340,306 68,009 24.98 38,757 34.84 0.0613
2019-08-15 2019-06-30 13F/A-1 ATMOS ENERGY COM 049560105 272,297 -289,031 -51.49 28,744 -50.25 0.0432
2019-08-14 2019-06-30 13F SLACK TECHNOLOGIES COM CL A 049560105 21,070 -540,258 790
2019-05-14 2019-03-31 13F ATMOS ENERGY COM 049560105 561,328 336,150 149.28 57,777 176.72 0.0865
2019-02-15 2018-12-31 13F/A-1 ATMOS ENERGY COM 049560105 225,178 112,906 100.56 20,879 98.04 0.0326
2019-02-14 2018-12-31 13F ATMOS ENERGY COM 049560105 225,178 20,879
2018-11-14 2018-09-30 13F ATMOS ENERGY COM 049560105 112,272 -233,434 -67.52 10,543 -66.17 0.0129
2018-08-14 2018-06-30 13F ATMOS ENERGY COM 049560105 345,706 176,351 104.13 31,162 118.44 0.0407
2018-05-15 2018-03-31 13F ATMOS ENERGY COM 049560105 169,355 -244,990 -59.13 14,266 -59.91 0.0190
2018-02-14 2017-12-31 13F ATMOS ENERGY COM 049560105 414,345 197,599 91.17 35,588 95.84 0.0491
2017-11-14 2017-09-30 13F ATMOS ENERGY COM 049560105 216,746 -140,261 -39.29 18,172 -38.64 0.0277
2017-08-14 2017-06-30 13F ATMOS ENERGY COM 049560105 357,007 -110,212 -23.59 29,614 -19.76 0.0528
2017-05-15 2017-03-31 13F ATMOS ENERGY COM 049560105 467,219 -160,233 -25.54 36,906 -20.68 0.0676
2017-02-14 2016-12-31 13F ATMOS ENERGY COM 049560105 627,452 -63,991 -9.25 46,526 -9.64 0.0974
2016-11-14 2016-09-30 13F ATMOS ENERGY COM 049560105 691,443 18,770 2.79 51,492 -5.87 0.0863
2016-08-15 2016-06-30 13F ATMOS ENERGY COM 049560105 672,673 -42,028 -5.88 54,702 3.07 0.1252
2016-05-16 2016-03-31 13F ATMOS ENERGY COM 049560105 714,701 342,776 92.16 53,074 126.37 0.1327
2016-02-16 2015-12-31 13F ATMOS ENERGY COM 049560105 371,925 281,441 311.04 23,446 345.40 0.0493
2015-11-16 2015-09-30 13F ATMOS ENERGY COM 049560105 90,484 -215,766 -70.45 5,264 -66.48 0.0102
2015-08-14 2015-06-30 13F ATMOS ENERGY COM 049560105 306,250 306,250 0.00 15,705 0.0297
2015-05-15 2015-03-31 13F ATMOS ENERGY COM 049560105 0 -245,390 -100.00 0 -100.00
2015-02-17 2014-12-31 13F ATMOS ENERGY COM 049560105 245,390 -189,754 -43.61 13,678 -34.10 0.0290
2014-11-14 2014-09-30 13F ATMOS ENERGY COM 049560105 435,144 353,618 433.75 20,756 376.82 0.0525
2014-08-14 2014-06-30 13F ATMOS ENERGY COM 049560105 81,526 -134,634 -62.28 4,353 -57.27 0.0121
2014-05-15 2014-03-31 13F ATMOS ENERGY COM 049560105 216,160 141,087 187.93 10,188 198.77 0.0295
2014-02-14 2013-12-31 13F ATMOS ENERGY COM 049560105 75,073 75,073 -0.49 3,410 10.07 0.0108
2013-11-14 2013-09-30 13F ATMOS ENERGY COM 049560105 0 -75,439 -100.00 0 -100.00
2013-08-14 2013-06-30 13F ATMOS ENERGY COM 049560105 75,439 75,439 3,098 0.0095
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-05-15 2025-03-31 13F ATMOS ENERGY COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F ATMOS ENERGY COM Call 18,400 2,563 n/a n/a n/a
2023-05-15 2023-03-31 13F ATMOS ENERGY COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-14 2022-12-31 13F ATMOS ENERGY COM Call 9,500 1,065 n/a n/a n/a
2022-08-15 2022-06-30 13F ATMOS ENERGY COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-16 2022-03-31 13F ATMOS ENERGY COM Call 20,100 2,402 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-02-17 2025-12-31 13F ATMOS ENERGY COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-14 2025-09-30 13F ATMOS ENERGY COM Put 13,700 11.38 2,339 23.43 n/a n/a n/a
2025-08-14 2025-06-30 13F ATMOS ENERGY COM Put 12,300 1,896 n/a n/a n/a
2023-05-15 2023-03-31 13F ATMOS ENERGY COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-14 2022-12-31 13F ATMOS ENERGY COM Put 2,400 269 n/a n/a n/a
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.