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SO · Southern Co

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$89.76 -0.21 (-0.23%) At close · Aug 26
Market Cap
$101.19B
Shares
1.13B

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 2,368
Total Value: $82,191,391,818
Total Shares: 886,438,335

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 2,368 13F filers · Δ vs Mar 31, 2026
Top Holder
11.0%
Sep 2023 → Jun 2026 · range 11.0% – 14.3%
−0.3 pts
Top 5
40.4%
Sep 2023 → Jun 2026 · range 40.4% – 44.9%
−0.2 pts
Top 10
55.8%
Sep 2023 → Jun 2026 · range 55.8% – 59.9%
−1.4 pts
HHI
416
Sep 2023 → Jun 2026 · range 416 – 519
Broadly held−12

Quarterly Activity

vs Mar 31, 2026
New
145
Increased
1,107
Decreased
731
Sold Out
152
Unchanged
385
Holder count: -7
Institutional value: +4.2%
Shares held: +5.3%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 2,451
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 92122 CUSIP 842587107 13F (30d) 1545 filings 1520 filers Visit website Investor relations