The Southern Company
US ˙ NYSE ˙ US8425871071

SecuritySO / The Southern Company
InstitutionWiley Bros.-aintree Capital, Llc
Latest Disclosed Ownership184,529 shares
Latest Disclosed Value $ 17,809,429
Wiley Bros.-aintree Capital, Llc reports 4.01% increase in ownership of SO / The Southern Company

On May 15, 2026 - Wiley Bros.-aintree Capital, Llc filed a 13F-HR form disclosing ownership of 184,529 shares of The Southern Company (US:SO) valued at $17,810,739 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 177,421 shares of The Southern Company. This represents a change in shares of 4.01% during the quarter. The current value of the position is $16,698,029 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 SOUTHERN COM 842587107 184,529 7,108 4.01 17,809 15.22 0.0880
2026-02-17 2025-12-31 13F SOUTHERN COM 842587107 177,421 17,897 11.22 15,457 2.38 0.0809
2025-11-14 2025-09-30 13F SOUTHERN COM 842587107 159,524 15,430 10.71 15,097 14.09 0.0967
2025-08-14 2025-06-30 13F SOUTHERN COM 842587107 144,094 20,356 16.45 13,233 17.25 0.1015
2025-05-15 2025-03-31 13F SOUTHERN COM 842587107 123,738 9,655 8.46 11,287 19.50 0.1199
2025-02-14 2024-12-31 13F SOUTHERN COM 842587107 114,083 39,074 52.09 9,445 39.62 0.1133
2024-11-14 2024-09-30 13F SOUTHERN COM 842587107 75,009 31,899 73.99 6,764 102.27 0.1305
2024-07-24 2024-06-30 13F SOUTHERN COM 842587107 43,110 25,832 149.51 3,344 169.90 0.1464
2024-04-11 2024-03-31 13F SOUTHERN COM 842587107 17,278 7,564 77.87 1,240 81.67 0.1708
2024-01-09 2023-12-31 13F SOUTHERN COM 842587107 9,714 232 2.45 682 11.26 0.1662
2023-10-06 2023-09-30 13F SOUTHERN COM 842587107 9,482 52 0.55 614 -7.40 0.2864
2023-07-05 2023-06-30 13F SOUTHERN COM 842587107 9,430 2,395 34.04 662 35.38 0.2966
2023-04-06 2023-03-31 13F SOUTHERN COM 842587107 7,035 -67 -0.94 489 -3.55 0.2354
2023-01-10 2022-12-31 13F SOUTHERN COM 842587107 7,102 -300 -4.05 507 0.80 0.2518
2022-10-11 2022-09-30 13F SOUTHERN COM 842587107 7,402 0 0.00 503 -4.73 0.2909
2022-07-06 2022-06-30 13F SOUTHERN COM 842587107 7,402 684 10.18 528 8.42 0.3049
2022-04-26 2022-03-31 13F/A-1 SOUTHERN COM 842587107 6,718 2,875 74.81 487 84.47 0.2733
2022-04-11 2022-03-31 13F SOUTHERN COM 842587107 6,518 2,675 473 0.3407
2022-01-12 2021-12-31 13F SOUTHERN COM 842587107 3,843 0 0.00 264 10.92 0.1592
2021-10-07 2021-09-30 13F SOUTHERN COM 842587107 3,843 3,843 238 0.1513
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.