Atmos Energy Corporation
US ˙ NYSE ˙ US0495601058

SecurityATO / Atmos Energy Corporation
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership21,608 shares
Latest Disclosed Value $ 3,991,405
Mercer Global Advisors Inc /adv reports 101.59% increase in ownership of ATO / Atmos Energy Corporation

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 21,608 shares of Atmos Energy Corporation (US:ATO) valued at $3,991,430 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 10,719 shares of Atmos Energy Corporation. This represents a change in shares of 101.59% during the quarter. The current value of the position is $3,678,546 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 21,608 10,889 101.59 3,991 122.22 0.0059
2026-02-17 2025-12-31 13F ATMOS ENERGY COM 049560105 10,719 -99 -0.92 1,797 -2.76 0.0027
2025-11-14 2025-09-30 13F ATMOS ENERGY COM 049560105 10,818 3,193 41.88 1,847 57.19 0.0031
2025-08-14 2025-06-30 13F ATMOS ENERGY COM 049560105 7,625 225 3.04 1,175 2.80 0.0024
2025-05-15 2025-03-31 13F ATMOS ENERGY COM 049560105 7,400 1,993 36.86 1,144 51.79 0.0026
2025-02-14 2024-12-31 13F ATMOS ENERGY COM 049560105 5,407 5,407 753 0.0018
2024-05-15 2024-03-31 13F ATMOS ENERGY COM 049560105 0 -7,677 -100.00 0 0.0000
2024-02-15 2023-12-31 13F ATMOS ENERGY COM 049560105 7,677 418 5.76 1 0.0027
2023-11-15 2023-09-30 13F/A-1 ATMOS ENERGY COM 049560105 7,259 329 4.75 1 0.0029
2023-11-14 2023-09-30 13F ATMOS ENERGY COM 049560105 7,259 329 1 0.0029
2023-08-14 2023-06-30 13F ATMOS ENERGY COM 049560105 6,930 -1,993 -22.34 1 -100.00 0.0032
2023-05-16 2023-03-31 13F ATMOS ENERGY COM 049560105 8,923 708 8.62 1 0.0046
2023-02-09 2022-12-31 13F ATMOS ENERGY COM 049560105 8,215 3,869 89.02 1 -100.00 0.0046
2022-11-15 2022-09-30 13F ATMOS ENERGY COM 049560105 4,346 1,025 30.86 443 19.09 0.0026
2022-08-10 2022-06-30 13F ATMOS ENERGY COM 049560105 3,321 1,352 68.66 372 58.30 0.0023
2022-05-10 2022-03-31 13F ATMOS ENERGY COM 049560105 1,969 22 1.13 235 15.20 0.0014
2022-02-04 2021-12-31 13F ATMOS ENERGY COM 049560105 1,947 -630 -24.45 204 -10.13 0.0013
2021-11-10 2021-09-30 13F ATMOS ENERGY COM 049560105 2,577 -658 -20.34 227 -27.01 0.0016
2021-08-10 2021-06-30 13F ATMOS ENERGY COM 049560105 3,235 932 40.47 311 36.40 0.0024
2021-08-10 2021-03-31 13F/A-1 ATMOS ENERGY COM 049560105 2,303 -528 -18.65 228 -15.56 0.0021
2021-05-11 2021-03-31 13F ATMOS ENERGY COM 049560105 2,303 -528 228 0.0022
2021-02-12 2020-12-31 13F ATMOS ENERGY COM 049560105 2,831 239 9.22 270 8.87 0.0034
2020-12-10 2020-09-30 13F ATMOS ENERGY COM 049560105 2,592 -354 -12.02 248 -15.36 0.0037
2020-08-10 2020-06-30 13F ATMOS ENERGY COM 049560105 2,946 -293 -9.05 293 -8.72 0.0053
2020-05-18 2020-03-31 13F ATMOS ENERGY COM 049560105 3,239 723 28.74 321 14.23 0.0071
2020-02-13 2019-12-31 13F ATMOS ENERGY CORP COM COM 049560105 2,516 -126 -4.77 281 -6.33 0.0056
2019-11-12 2019-09-30 13F ATMOS ENERGY CORP COM COM 049560105 2,642 2,642 300 0.0071
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.