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STATE OF WISCONSIN INVESTMENT BOARD

Position in SO — Southern Co

CIK 854157 MADISON, WI

Position in SO

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$56,914,851
+$7,199,777 QoQ
Shares Held
589,669
+3.4% QoQ
Ownership
0.052%
of shares outstanding
% of Portfolio
0.15%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in SO Over Time

Shares Held

Position Value (USD)

Position in Utilities - Regulated Electric

Utilities · as of Mar 31, 2026

STATE OF WISCONSIN INVESTMENT BOARD holds $710,856,734 across 35 Utilities - Regulated Electric names. SO ranks #2 (8.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 SO
Southern Co
This page
589,669 $56,914,851

All Filings in SO

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25 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $56,914,851 589,669
2025-12-31 $49,715,074 570,127
2025-09-30 $54,720,956 577,408
2025-06-30 $53,945,074 587,445
2025-03-31 $56,566,076 615,183
2024-12-31 $49,856,778 605,646
2024-09-30 $56,276,829 624,050
2024-06-30 $45,743,727 589,709
2024-03-31 $42,400,205 591,026
2023-12-31 $40,260,590 574,167
2023-09-30 $37,549,637 580,186
2023-06-30 $45,075,912 641,650
2023-03-31 $40,154,965 577,105
2022-12-31 $40,373,357 565,374
2022-09-30 $41,118,444 604,683
2022-06-30 $54,441,904 763,454
2022-03-31 $57,448,077 792,278
2021-12-31 $56,186,633 819,286
2021-09-30 $52,063,537 840,141
2021-06-30 $48,968,927 809,270
2021-03-31 $52,338,782 842,001
2020-12-31 $51,120,448 832,174
2020-09-30 $48,998,288 903,694
2020-06-30 $45,911,567 885,469
2020-03-31 $45,430,985 839,139