SOMN · Insider trading · 13F holders · Congress trades
Southern Co (SOMN)
Who is buying and selling SOMN: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 7
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
SOMN at a glance
- No open-market insider purchases or sales of SOMN were filed in the last 90 days.
- 7 13F filers hold SOMN among their 50 largest positions, worth $243.2M combined. The biggest bets by portfolio weight are Camden Asset Management L P /ca (7.8%), Advent Capital Management /de/ (4.9%) and Chicago Capital Management, LLC (1.7%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
- No member of Congress has disclosed a trade in SOMN.
SOMN insider trading
No open-market insider purchases or sales of SOMN were filed in the last 90 days.
Who owns SOMN? Hedge funds and superinvestors
7 13F filers hold SOMN among their 50 largest positions, worth $243.2M combined. The biggest bets by portfolio weight are Camden Asset Management L P /ca (7.8%), Advent Capital Management /de/ (4.9%) and Chicago Capital Management, LLC (1.7%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Calamos Advisors LLCMutual fund manager | 0.5% | $105.2M | 2,115,625 | +1.6% shares | Q2 2026 |
| Advent Capital Management /de/Institutional asset manager | 4.9% | $60.8M | 1,215,477 | +8.4% shares | Q2 2026 |
| Camden Asset Management L P /caAsset manager | 7.8% | $57.5M | 1,152,900 | +110.4% shares | Q2 2026 |
| Wolverine Asset Management LLCHedge fund | 0.3% | $9.3M | 187,052 | — | Q2 2026 |
| Ssi Investment Management LLCAsset manager | 1.4% | $9.1M | 182,480 | — | Q2 2026 |
| AEGON USA Investment Management, LLCInstitutional asset manager | 0.6% | $728K | 14,530 | +0.0% shares | Q2 2026 |
| Chicago Capital Management, LLCHedge fund | 1.7% | $452K | 10,100 | New | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 6). Screen SOMN in the grand portfolio →
SOMN stock trades by members of Congress
No member of Congress has disclosed a trade in SOMN.
SOMN questions and answers
Are insiders buying SOMN stock?
No open-market insider purchases or sales of SOMN were filed in the last 90 days.
Which hedge funds own SOMN?
7 13F filers hold SOMN among their 50 largest positions, worth $243.2M combined. The biggest bets by portfolio weight are Camden Asset Management L P /ca (7.8%), Advent Capital Management /de/ (4.9%) and Chicago Capital Management, LLC (1.7%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
Has Congress traded SOMN?
No member of Congress has disclosed a trade in SOMN.
Who is the largest holder of SOMN?
Among 13F filers, Calamos Advisors LLC reports the largest SOMN position, $105.2M (2,115,625 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Camden Asset Management L P /ca's: 7.8% of its portfolio.
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