The Southern Company
MX ˙ BMV ˙ US8425871071
SecurityMX:SO / The Southern Company
InstitutionMBA Advisors LLC
Latest Disclosed Ownership2,213 shares
Latest Disclosed Value $ 213,599
MBA Advisors LLC ownership in SO / The Southern Company

On April 20, 2026 - MBA Advisors LLC filed a 13F-HR form disclosing ownership of 2,213 shares of The Southern Company (MX:SO) valued at $213,599 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 0 shares of The Southern Company.

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 2,213 2,213 214 0.0821
2026-01-21 2025-12-31 13F SOUTHERN COM 842587107 0 -2,222 -100.00 0 -100.00
2025-10-28 2025-09-30 13F SOUTHERN COM 842587107 2,222 9 0.41 211 3.45 0.0900
2025-07-17 2025-06-30 13F SOUTHERN COM 842587107 2,213 0 0.00 203 0.00 0.0938
2025-04-29 2025-03-31 13F SOUTHERN COM 842587107 2,213 2,213 203 0.1007
2025-01-29 2024-12-31 13F SOUTHERN COM 842587107 0 -2,426 -100.00 0 -100.00
2024-10-25 2024-09-30 13F SOUTHERN COM 842587107 2,426 2,426 219 0.1050
2024-04-26 2024-03-31 13F SOUTHERN COM 842587107 0 -2,971 -100.00 0 -100.00
2024-01-19 2023-12-31 13F SOUTHERN COM 842587107 2,971 2,971 208 0.1161
2023-10-19 2023-09-30 13F SOUTHERN COM 842587107 0 -2,971 -100.00 0 -100.00
2023-07-21 2023-06-30 13F SOUTHERN COM 842587107 2,971 -1,441 -32.66 209 -32.03 0.1247
2023-04-21 2023-03-31 13F SOUTHERN COM 842587107 4,412 0 0.00 307 -2.86 0.1911
2023-01-26 2022-12-31 13F SOUTHERN COM 842587107 4,412 0 0.00 315 5.00 0.2061
2022-11-01 2022-09-30 13F SOUTHERN COM 842587107 4,412 0 0.00 300 -4.76 0.2170
2022-08-08 2022-06-30 13F SOUTHERN COM 842587107 4,412 0 0.00 315 -1.56 0.2165
2022-05-16 2022-03-31 13F SOUTHERN CO COM Stock 842587107 4,412 -1,000 -18.48 320 -13.75 0.1982
2022-02-11 2021-12-31 13F SOUTHERN CO COM Stock 842587107 5,412 0 0.00 371 10.75 0.2299
2021-11-16 2021-09-30 13F SOUTHERN CO COM Stock 842587107 5,412 0 0.00 335 2.45 0.2472
2021-08-16 2021-06-30 13F SOUTHERN CO COM Stock 842587107 5,412 0 0.00 327 -2.68 0.1522
2021-05-18 2021-03-31 13F SOUTHERN CO COM Stock 842587107 5,412 5,412 336 0.1846
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.