Atmos Energy Corporation
US ˙ NYSE ˙ US0495601058

SecurityATO / Atmos Energy Corporation
InstitutionQuantinno Capital Management LP
Latest Disclosed Ownership174,843 shares
Latest Disclosed Value $ 32,297,170
Quantinno Capital Management LP reports 62.58% increase in ownership of ATO / Atmos Energy Corporation

On May 15, 2026 - Quantinno Capital Management LP filed a 13F-HR form disclosing ownership of 174,843 shares of Atmos Energy Corporation (US:ATO) valued at $32,296,999 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 107,542 shares of Atmos Energy Corporation. This represents a change in shares of 62.58% during the quarter. The current value of the position is $29,366,630 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)
2026-05-15 2026-03-31 13F ATMOS ENERGY COM 049560105 174,843 67,301 62.58 32,297 79.16 0.0539
2026-02-17 2025-12-31 13F ATMOS ENERGY COM 049560105 107,542 27,443 34.26 18,027 31.81 0.0362
2025-11-14 2025-09-30 13F ATMOS ENERGY COM 049560105 80,099 22,557 39.20 13,677 54.25 0.0373
2025-08-14 2025-06-30 13F ATMOS ENERGY COM 049560105 57,542 16,766 41.12 8,868 40.68 0.0383
2025-05-12 2025-03-31 13F ATMOS ENERGY COM 049560105 40,776 19,748 93.91 6,303 115.27 0.0410
2025-02-14 2024-12-31 13F ATMOS ENERGY COM 049560105 21,028 5,611 36.39 2,929 36.95 0.0288
2024-11-14 2024-09-30 13F ATMOS ENERGY COM 049560105 15,417 8,224 114.33 2,139 154.83 0.0278
2024-08-14 2024-06-30 13F ATMOS ENERGY COM 049560105 7,193 1,678 30.43 839 27.90 0.0151
2024-05-14 2024-03-31 13F ATMOS ENERGY COM 049560105 5,515 912 19.81 656 22.85 0.0143
2024-02-14 2023-12-31 13F ATMOS ENERGY COM 049560105 4,603 -629 -12.02 534 -3.61 0.0187
2023-11-14 2023-09-30 13F ATMOS ENERGY COM 049560105 5,232 795 17.92 554 7.36 0.0252
2023-08-04 2023-06-30 13F ATMOS ENERGY COM 049560105 4,437 2,198 98.17 516 104.76 0.0295
2023-05-03 2023-03-31 13F ATMOS ENERGY COM 049560105 2,239 157 7.54 252 8.15 0.0167
2023-02-13 2022-12-31 13F ATMOS ENERGY COM 049560105 2,082 2,082 233 0.0174
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.