13F Insight
DOSSIER · 13F Holders · Q2 2026
SO 3.25 06/15/28

SOUTHERN CO

60 institutions still hold SOUTHERN CO as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 842587ED5·60 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$1.3B
visible holders
Holders
60
filers reporting
Concentration
22.14%
VOYA INVESTMENT MANAGEMENT LLC #1
top holder share
AI Holders Summary · Q2 2026

60 institutions reported SO 3.25 06/15/28 in Q2 2026. VOYA INVESTMENT MANAGEMENT LLC leads at 22.1% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
VOYA INVESTMENT MANAGEMENT LLC
CIK 0001068837
$282M279.1M0.24%Q2 202602
BlackRock, Inc.
CIK 0002012383
$167M164.8M0.00%Q2 202603
HIGHBRIDGE CAPITAL MANAGEMENT LLC
CIK 0000919185
$149M146.9M3.63%Q2 202604
Sculptor Capital LP
CIK 0001054587
$86M85.0M0.70%Q2 202605
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$82M81.5M0.03%Q2 202606
Calamos Advisors LLC
CIK 0001316507
$71M70.4M0.24%Q2 202607
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$66M65.4M0.01%Q2 202608
TENOR CAPITAL MANAGEMENT Co., L.P.
CIK 0001346554
$51M50.0M0.71%Q2 202609
UBS Group AG
CIK 0001610520
$38M37.6M0.00%Q2 202610
CAMDEN ASSET MANAGEMENT L P /CA
CIK 0000903944
$36M36.0M1.06%Q2 202611
MANUFACTURERS LIFE INSURANCE COMPANY, THE
CIK 0000928047
$31M30.9M0.02%Q2 202612
Hudson Bay Capital Management LP
CIK 0001393825
$30M30.0M0.08%Q2 202613
Aequim Alternative Investments LP
CIK 0001728201
$30M30.0M0.47%Q2 202614
Wellesley Asset Management
CIK 0001533551
$30M30.1M2.76%Q2 202615
Polar Asset Management Partners Inc.
CIK 0001326389
$25M25.0M0.42%Q2 202616
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$24M23.6M0.02%Q2 202617
LMR Partners LLP
CIK 0001578621
$23M22.5M0.08%Q2 202618
Squarepoint Ops LLC
CIK 0001642575
$20M20K0.02%Q2 202619
BANK OF MONTREAL /CAN/
CIK 0000927971
$16M16.1M0.01%Q2 202620
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main
CIK 0001694217
$15M15.3M0.01%Q2 2026
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