The Southern Company
MX ˙ BMV ˙ US8425871071
SecurityMX:SO / The Southern Company
InstitutionBreakwater Capital Group
Latest Disclosed Ownership9,745 shares
Latest Disclosed Value $ 940,550
Breakwater Capital Group reports 8.75% increase in ownership of SO / The Southern Company

On April 20, 2026 - Breakwater Capital Group filed a 13F-HR form disclosing ownership of 9,745 shares of The Southern Company (MX:SO) valued at $940,550 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 8,961 shares of The Southern Company. This represents a change in shares of 8.75% 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)
2026-04-20 2026-03-31 13F SOUTHERN COM 842587107 9,745 784 8.75 941 20.36 0.1259
2026-01-09 2025-12-31 13F SOUTHERN COM 842587107 8,961 2 0.02 781 -8.01 0.1090
2025-11-06 2025-09-30 13F SOUTHERN COM 842587107 8,959 3 0.03 849 3.28 0.1254
2025-07-09 2025-06-30 13F SOUTHERN COM 842587107 8,956 1 0.01 822 -0.12 0.1341
2025-04-10 2025-03-31 13F SOUTHERN COM 842587107 8,955 1,497 20.07 823 34.26 0.1467
2025-01-14 2024-12-31 13F SOUTHERN COM 842587107 7,458 505 7.26 614 -2.23 0.1222
2024-10-04 2024-09-30 13F SOUTHERN COM 842587107 6,953 57 0.83 627 17.42 0.1263
2024-07-26 2024-06-30 13F SOUTHERN COM 842587107 6,896 1,252 22.18 535 32.18 0.1214
2024-04-18 2024-03-31 13F SOUTHERN COM 842587107 5,644 368 6.97 405 11.29 0.1018
2024-01-24 2023-12-31 13F SOUTHERN COM 842587107 5,276 905 20.70 363 21.40 0.1027
2023-11-06 2023-09-30 13F SOUTHERN COM 842587107 4,371 -838 -16.09 299 -18.08 0.1030
2023-07-24 2023-06-30 13F SOUTHERN COM 842587107 5,209 258 5.21 366 6.10 0.1337
2023-04-27 2023-03-31 13F SOUTHERN COM 842587107 4,951 125 2.59 345 0.00 0.1446
2023-02-02 2022-12-31 13F SOUTHERN COM 842587107 4,826 4,826 345 0.1803
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.