The Southern Company 2025 Series A Corporate Units (SOMN)
ELECTRIC SERVICES
The Southern Company 2025 Series A Corporate Units (SOMN) is listed on the New York Stock Exchange, where it has traded since November 12, 2025.
- Listed On
- the New York Stock Exchange
- Listed Since
- November 12, 2025
- Employees
- 29,800
About The Southern Company 2025 Series A Corporate Units
Southern is one of the largest utilities in the US. The company serves 9 million customers with vertically integrated electric utilities in three states and natural gas distribution utilities in four states. It owns 46 gigawatts of rate-regulated generating capacity, primarily for serving customers in Georgia, Alabama, and Mississippi. Subsidiary Southern Power owns 13 gigawatts of natural gas generation and renewable energy across the US and sells the electricity primarily under long-term contracts.
Institutional ownership
In 13F filings for the quarter ended June 30, 2026, 53 institutions reported holding SOMN, with 45.7 million shares worth $2.0 billion in aggregate. The largest reported holder was Capital Group, with 8.1 million shares worth $404.7 million. Of the 5 largest holders listed below, 2 added shares and 3 reduced their positions during the quarter.
| Institution | Shares | Value | Quarter change |
|---|---|---|---|
| Capital Group | 8,137,287 | $405M | Reduced 30.11% |
| Franklin Resources | 7,016,358 | $349M | Added 3.96% |
| Russell Investments Group, Ltd | 5,521,000 | $5M | Added 43.78% |
| Voya Investment Management | 4,733,395 | $235M | Reduced 2.4% |
| BlackRock | 2,461,903 | $122M | Reduced 10.51% |
Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.
Frequently asked questions
What is SOMN?
The Southern Company 2025 Series A Corporate Units (SOMN) is listed on the New York Stock Exchange, where it has traded since November 12, 2025.
Who are the largest institutional holders of SOMN?
In 13F filings for the quarter ended June 30, 2026, the largest reported holders of SOMN were Capital Group, Franklin Resources and Russell Investments Group, Ltd.
How many institutions own SOMN?
53 institutions reported a position in SOMN for the quarter ended June 30, 2026, worth $2.0 billion in total.
Did institutions buy or sell SOMN last quarter?
Of the 5 largest reported holders, 2 added shares and 3 reduced their positions during the quarter. Every reported holder and its change is on the SentiSense ownership page for SOMN.
Every reported institutional holder, plus insider and congressional trades in SOMN, on SentiSense.