SOUTHERN CO (SO)

Utilities · Electric Services

SOUTHERN CO (SO) stock research on InvestAtlant: institutional ownership from 13F filings, insider Form 4 activity, and SEC context.

Top institutional holders (2026-Q3)

InstitutionSharesValue% Outstanding
INCOME RESEARCH & MANAGEMENT 5,290,000 — —
Pictet Asset Management Holding SA 3,785,562 $313.79M —
Sumitomo Mitsui Trust Group, Inc. 2,430,312 $201.45M —
Calamos Advisors LLC 2,327,098 6.33M —
Assenagon Asset Management S.A. 2,067,040 71.34M —
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 1,847,794 53.16M —
PRINCIPAL FINANCIAL GROUP INC 1,368,086 10.51M —
CONFLUENCE INVESTMENT MANAGEMENT LLC 1,315,100 09.01M —

Recent insider transactions

DateInsiderTitleTypeValue
2026-11-02 Kim Matthew M. Comptroller Sale $9.3K
2026-10-01 Kim Matthew M. Comptroller Sale $8.3K
2026-09-03 Sena Peter P III Chairman,President & CEO, SNC Sale $377.9K
2026-09-03 Kim Matthew M. Comptroller Sale 24.4K
2026-09-01 Kim Matthew M. Comptroller Sale $8.8K
2026-08-06 Spainhour Sterling A Jr. EVP & CLO Sale $313.4K
2026-08-03 Kim Matthew M. Comptroller Sale $9.4K
2026-07-01 Kim Matthew M. Comptroller Sale $9.6K

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Holdings from SEC 13F. Insider trades from Form 4. Congress from House and Senate PTRs. Real-time market prices via TradingView.