The Southern Company
MX ˙ BMV ˙ US8425871071
SecurityMX:SO / The Southern Company
InstitutionFinancial Management Professionals, Inc.
Latest Disclosed Ownership1,472 shares
Latest Disclosed Value $ 142,060
Financial Management Professionals, Inc. reports 6.74% increase in ownership of SO / The Southern Company

On April 15, 2026 - Financial Management Professionals, Inc. filed a 13F-HR form disclosing ownership of 1,472 shares of The Southern Company (MX:SO) valued at $142,060 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 1,379 shares of The Southern Company. This represents a change in shares of 6.74% 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)
2026-04-15 2026-03-31 13F Southern Stock 842587107 1,472 93 6.74 142 18.33 0.0159
2026-01-27 2025-12-31 13F Southern Stock 842587107 1,379 -118 -7.88 120 -14.89 0.0124
2025-10-15 2025-09-30 13F Southern Stock 842587107 1,497 -4 -0.27 142 2.92 0.0148
2025-07-15 2025-06-30 13F Southern Stock 842587107 1,501 22 1.49 138 0.74 0.0155
2025-04-10 2025-03-31 13F Southern Stock 842587107 1,479 13 0.89 136 13.33 0.0174
2025-01-15 2024-12-31 13F Southern Stock 842587107 1,466 -7 -0.48 121 0.0153
2024-10-24 2024-09-30 13F Southern Stock 842587107 1,473 20 1.38 0 0.0165
2024-07-12 2024-06-30 13F Southern Stock 842587107 1,453 -2,987 -67.27 0 0.0155
2024-04-16 2024-03-31 13F Southern Stock 842587107 4,440 -71 -1.57 0 0.0470
2024-01-12 2023-12-31 13F Southern Stock 842587107 4,511 14 0.31 0 0.0515
2023-10-13 2023-09-30 13F Southern Stock 842587107 4,497 6 0.13 0 0.0512
2023-07-10 2023-06-30 13F Southern Stock 842587107 4,491 37 0.83 0 0.0527
2023-04-13 2023-03-31 13F Southern Stock 842587107 4,454 222 5.25 0 0.0598
2023-01-11 2022-12-31 13F Southern Stock 842587107 4,232 30 0.71 0 -100.00 0.0618
2022-10-27 2022-09-30 13F Southern Stock 842587107 4,202 -162 -3.71 286 -8.04 0.0655
2022-07-12 2022-06-30 13F SOUTHERN COM 842587107 4,364 28 0.65 311 -0.96 0.0755
2022-04-27 2022-03-31 13F SOUTHERN COM 842587107 4,336 244 5.96 314 11.74 0.0681
2022-01-28 2021-12-31 13F SOUTHERN COM 842587107 4,092 0 0.00 281 10.63 0.0595
2021-11-02 2021-09-30 13F SOUTHERN COM 842587107 4,092 0 0.00 254 2.42 0.0586
2021-08-05 2021-06-30 13F SOUTHERN COM 842587107 4,092 -491 -10.71 248 -12.98 0.0638
2021-04-26 2021-03-31 13F SOUTHERN COM 842587107 4,583 0 0.00 285 1.06 0.0763
2021-02-03 2020-12-31 13F SOUTHERN COM 842587107 4,583 0 0.00 282 13.71 0.0791
2020-10-26 2020-09-30 13F SOUTHERN COM 842587107 4,583 -3,502 -43.31 248 -40.81 0.0885
2020-07-21 2020-06-30 13F SOUTHERN COM 842587107 8,085 51 0.63 419 -3.68 0.1445
2020-04-24 2020-03-31 13F SOUTHERN COM 842587107 8,034 0 0.00 435 -15.04 0.1844
2020-01-21 2019-12-31 13F SOUTHERN COM 842587107 8,034 0 0.00 512 3.23 0.1695
2019-10-11 2019-09-30 13F SOUTHERN COM 842587107 8,034 4,034 100.85 496 124.43 0.1829
2019-07-29 2019-06-30 13F SOUTHERN COM 842587107 4,000 0 0.00 221 6.76 0.0819
2019-04-22 2019-03-31 13F SOUTHERN COM 842587107 4,000 0 0.00 207 17.61 0.0832
2019-01-22 2018-12-31 13F SOUTHERN COM 842587107 4,000 0 0.00 176 1.15 0.1097
2018-10-24 2018-09-30 13F SOUTHERN COM 842587107 4,000 0 0.00 174 -5.95 0.0676
2018-08-01 2018-06-30 13F SOUTHERN COM 842587107 4,000 0 0.00 185 3.35 0.0753
2018-05-04 2018-03-31 13F SOUTHERN COM 842587107 4,000 0 0.00 179 -6.77 0.0926
2018-01-19 2017-12-31 13F SOUTHERN COM 842587107 4,000 0 0.00 192 -2.04 0.0810
2017-10-19 2017-09-30 13F SOUTHERN COM 842587107 4,000 0 0.00 196 2.62 0.0859
2017-07-28 2017-06-30 13F SOUTHERN COM 842587107 4,000 0 0.00 191 -4.02 0.0867
2017-04-18 2017-03-31 13F SOUTHERN COM 842587107 4,000 0 0.00 199 1.53 0.1015
2017-02-06 2016-12-31 13F SOUTHERN COM 842587107 4,000 0 0.00 196 -4.39 0.1022
2016-11-07 2016-09-30 13F SOUTHERN COM 842587107 4,000 0 0.00 205 -4.21 0.1063
2016-08-04 2016-06-30 13F SOUTHERN COM 842587107 4,000 0 0.00 214 3.38 0.1126
2016-05-04 2016-03-31 13F SOUTHERN COM 842587107 4,000 0 0.00 207 10.70 0.1072
2016-01-28 2015-12-31 13F SOUTHERN COM 842587107 4,000 0 0.00 187 4.47 0.0959
2015-11-03 2015-09-30 13F SOUTHERN COM 842587107 4,000 0 0.00 179 7.19 0.1211
2015-07-30 2015-06-30 13F SOUTHERN COM 842587107 4,000 0 0.00 167 -5.65 0.0782
2015-05-05 2015-03-31 13F THE SOUTHERN COM 842587107 4,000 4,000 0.00 177 0.0829
2015-01-29 2014-12-31 13F THE SOUTHERN COM 842587107 0 -4,000 -100.00 0 -100.00
2014-11-03 2014-09-30 13F THE SOUTHERN COM 842587107 4,000 0 0.00 174 -3.87 0.1187
2014-08-01 2014-06-30 13F THE SOUTHERN COM 842587107 4,000 0 0.00 181 2.84 0.1200
2014-05-06 2014-03-31 13F THE SOUTHERN COM 842587107 4,000 0 0.00 176 7.32 0.1210
2014-01-23 2013-12-31 13F THE SOUTHERN COM 842587107 4,000 0 0.00 164 -0.61 0.1107
2013-10-30 2013-09-30 13F THE SOUTHERN COM 842587107 4,000 0 0.00 165 -6.78 0.1022
2013-08-08 2013-06-30 13F THE SOUTHERN COM 842587107 4,000 4,000 177 0.1302
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.