SO
The Southern Company · Utilities · Regulated Electric
Momentum inputs (comparable managers):
holder breadth +6.2% ·
share flow +2.0% ·
net new positions +5.9%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 3 | 0 | 2.80M | $232.64M | n/a | −1 |
| Q2 2026 | 161 | -6 | 705.08M | $66.68B | +3 | −10 |
| Q1 2026 | 171 | +1 | 693.65M | $64.04B | +6 | −6 |
| Q4 2025 | 169 | -1 | 717.87M | $62.34B | +3 | −3 |
| Q3 2025 | 23 | +1 | 534.69M | $50.67B | +1 | −1 |
| Q2 2025 | 20 | 0 | 353.22M | $32.42B | +2 | −2 |
| Q1 2025 | 17 | +1 | 121.96M | $11.21B | +1 | n/a |
| Q4 2024 | 16 | 0 | 119.55M | $9.84B | +1 | −1 |
| Q3 2024 | 15 | +2 | 59.55M | $5.36B | +2 | n/a |
| Q2 2024 | 13 | n/a | 58.57M | $4.54B | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 58.40M | +1.3% | $5.37B | 0.2% | ▲ Add | 2 | SEC ↗ ×2 |
| 2 | Geode Capital Management ✦ (passive) | 25.77M | +2.9% | $2.36B | 0.2% | ▲ Add | 4 | SEC ↗ ×2 |
| 3 | T. Rowe Price ✦ | 14.87M | -6.4% | $1.37B | 0.2% | ▼ Trim | 4 | SEC ↗ ×3 |
| 4 | Norges Bank ✦ (passive) | 10.65M | +3.4% | $979.71M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 5 | Marshall Wace ✦ | 3.69M | -14.7% | $339.15M | 0.5% | ▼ Trim | 3 | SEC ↗ ×3 |
| 6 | Wellington Management ✦ | 3.04M | +1.8% | $279.44M | 0.1% | ▲ Add | 4 | SEC ↗ ×7 |
| 7 | Citadel Advisors ✦ | 2.44M | +974.0% | $223.95M | 0.2% | ▲ Add | 4 | SEC ↗ ×2 |
| 8 | Adage Capital Partners ✦ | 1.35M | +125.3% | $124.06M | 0.2% | ▲ Add | 4 | SEC ↗ |
| 9 | AQR Capital Management ✦ | 460.13K | +71.8% | $42.31M | 0.0% | ▲ Add | 4 | SEC ↗ ×5 |
| 10 | Millennium Management ✦ | 382.08K | +406.3% | $35.13M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 11 | D. E. Shaw & Co. ✦ | 375.02K | -20.2% | $34.48M | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 12 | Renaissance Technologies ✦ | 189.70K | -86.1% | $17.44M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 13 | Fisher Asset Management ✦ | 116.28K | +1.7% | $10.69M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 14 | Gotham Asset Management ✦ | 105.05K | -49.6% | $9.66M | 0.1% | ▼ Trim | 4 | SEC ↗ |
| 15 | Arrowstreet Capital ✦ | 105.02K | New | $9.66M | 0.0% | New | 1 | SEC ↗ |
| 16 | Baillie Gifford ✦ | 24.64K | 0.0% | $2.27M | 0.0% | Held | 4 | SEC ↗ |
| 17 | Two Sigma Investments ✦ | 4.80K | -69.2% | $441,360 | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Arrowstreet Capital | $9.66M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 2,332 holders, 745.18M shares, $67.34B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 100 sh · $8,273
Officer · 1.40K sh · $124,418
Officer · 4.27K sh · $377,925
Officer · 100 sh · $8,845
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology