Who owns Southern Company (SO)?
107 holders named in SEC filings declare between 41.7% and 65.5% of Southern Company's shares outstanding, as of Sep 30, 2026. The largest are Vanguard (9.8%), BlackRock (8.1%) and State Street (5.6%); the five largest hold 33.1% together. Another 2,253 institutions hold small positions worth 7.0%. At least 27.5% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 5.4% and sold 2.8% of the shares, a net purchase of 2.6%; 102 opened a position, 1,073 added, 716 reduced and 106 sold out. Biggest buyers: T. Rowe Price (+10.0M shares) and Goldman Sachs (+8.7M shares). Biggest sellers: JPMorgan (-10.6M) and Marshall Wace (-2.3M). Over time, 2,342 managers declared Southern Company in their 13F for Q2 2026, against 1,408 for Q4 2019: together at most 72.5% of the shares outstanding, against 59.4%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| Vanguard | 13F | 9.8% | Jun 30, 2026 | Q4 2019 or earlier |
| BlackRock | 13F | 8.1% | Jun 30, 2026 | Q4 2019 or earlier |
| State Street | 13F | 5.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Capital Group | 13F | 5.5% | Jun 30, 2026 | Q2 2020 |
| T. Rowe Price | 13F | 4.0% | Jun 30, 2026 | Q4 2019 or earlier |
| JPMorgan | 13F | 2.8% | Jun 30, 2026 | Q4 2019 or earlier |
| Geode Capital | 13F | 2.5% | Jun 30, 2026 | Q4 2019 or earlier |
| Fidelity (FMR) | 13F | 2.0% | Jun 30, 2026 | Q4 2019 or earlier |
| Franklin Templeton | 13F | 1.4% | Jun 30, 2026 | Q4 2019 or earlier |
| Goldman Sachs | 13F | 1.3% | Jun 30, 2026 | Q4 2019 or earlier |
| Norges Bank | 13F | 1.2% | Jun 30, 2026 | Q4 2019 or earlier |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 13F | 1.2% | Jun 30, 2026 | Q4 2019 or earlier |
| Morgan Stanley | 13F | 1.2% | Jun 30, 2026 | Q4 2019 or earlier |
| Northern Trust | 13F | 0.85% | Jun 30, 2026 | Q4 2019 or earlier |
| Ameriprise Financial, Inc. | 13F | 0.83% | Jun 30, 2026 | Q4 2019 or earlier |
| UBS | 13F | 0.82% | Jun 30, 2026 | Q4 2019 or earlier |
| ROYAL BANK OF CANADA | 13F | 0.76% | Jun 30, 2026 | Q4 2019 or earlier |
| Bank of America | 13F | 0.73% | Jun 30, 2026 | Q4 2019 or earlier |
| Legal & General | 13F | 0.67% | Jun 30, 2026 | Q4 2019 or earlier |
| Charles Schwab | 13F | 0.64% | Jun 30, 2026 | Q4 2019 or earlier |
| BNY | 13F | 0.63% | Jun 30, 2026 | Q4 2019 or earlier |
| Boston Partners | 13F | 0.54% | Jun 30, 2026 | Q4 2023 |
| Invesco | 13F | 0.48% | Jun 30, 2026 | Q4 2019 or earlier |
| Wellington | 13F | 0.48% | Jun 30, 2026 | Q3 2020 |
| Amundi | 13F | 0.39% | Jun 30, 2026 | Q4 2019 or earlier |
Southern Company institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 1,408 | 59.4% | $39.9B | 48.4% |
| Q4 2020 | 1,465 | 58.3% | $37.8B | 51.1% |
| Q4 2021 | 1,616 | 60.0% | $43.6B | 51.4% |
| Q4 2022 | 1,709 | 63.0% | $49.0B | 48.3% |
| Q4 2023 | 1,823 | 64.2% | $49.1B | 48.2% |
| Q4 2024 | 2,106 | 68.1% | $61.4B | 48.9% |
| Q4 2025 | 2,257 | 72.4% | $69.6B | 49.3% |
| Q2 2026 | 2,342 | 72.5% | $79.9B | 49.1% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.