Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
2,304 institutional managers reported holding SO for the quarter ended Mar 31, 2026. Together they hold about 66% of shares outstanding; the top 10 hold 40%. 213 opened new positions; 144 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 109.58M | 9.71% | $10.58B | added +1.3% | ≤2013 |
| BlackRock | 90.37M | 8.01% | $8.72B | added +2% | ≤2013 |
| State Street | 62.98M | 5.58% | $6.08B | added +2.4% | ≤2013 |
| Capital Group (American Funds) | 56.24M | 4.99% | $5.43B | added +36.7% | 2025 Q2 |
| T. Rowe Price | 36.43M | 3.23% | $3.52B | added +5.7% | ≤2013 |
| Geode Capital | 28.36M | 2.51% | $2.74B | added +4% | ≤2013 |
| FMR (Fidelity) | 22.89M | 2.03% | $2.21B | trimmed -0.5% | ≤2013 |
| Franklin Resources | 16.81M | 1.49% | $1.62B | added +9.6% | ≤2013 |
| MFS Investment Management | 15.60M | 1.38% | $1.51B | trimmed -4.3% | 2017 Q3 |
| Morgan Stanley | 12.92M | 1.15% | $1.25B | trimmed -1.8% | ≤2013 |
| Northern Trust | 9.83M | 0.87% | $948.5M | unchanged | ≤2013 |
| Ameriprise Financial INC | 9.44M | 0.84% | $910.8M | unchanged | ≤2013 |
| UBS | 9.25M | 0.82% | $892.8M | trimmed -4.1% | ≤2013 |
| Royal Bank OF Canada | 8.75M | 0.78% | $844.9M | added +10.4% | ≤2013 |
| Bank OF America CORP /DE/ | 8.38M | 0.74% | $808.9M | added +4.9% | ≤2013 |
| Legal & General Group PLC | 7.85M | 0.70% | $757.5M | trimmed -6.8% | ≤2013 |
| BNY Mellon | 7.28M | 0.65% | $702.5M | trimmed -2.3% | ≤2013 |
| Charles Schwab Investment Management | 7.11M | 0.63% | $686.6M | added +3.2% | ≤2013 |
| Goldman Sachs | 5.84M | 0.52% | $563.9M | added +16.6% | ≤2013 |
| Invesco | 5.54M | 0.49% | $534.5M | added +3.4% | ≤2013 |
| Barclays PLC | 4.56M | 0.41% | $440.6M | added +3.9% | ≤2013 |
| Wellington Management | 4.52M | 0.40% | $435.9M | added +22% | ≤2013 |
| Wells Fargo & COMPANY/MN | 4.25M | 0.38% | $410.7M | added +6.1% | ≤2013 |
| Pictet Asset Management Holding SA | 4.24M | 0.38% | $408.9M | trimmed -0.7% | ≤2013 |
| Nuveen | 3.89M | 0.34% | $375.5M | trimmed -14.9% | ≤2013 |
| Mawer Investment Management LTD. | 3.42M | 0.30% | $330.3M | added +93.6% | 2021 Q2 |
| Amundi | 3.32M | 0.29% | $320.9M | added +89.2% | 2017 Q4 |
| Mitsubishi UFJ Asset Management CO., LTD. | 3.29M | 0.29% | $318.0M | added +5.5% | ≤2013 |
| Swiss National Bank | 3.23M | 0.29% | $311.9M | added +7.2% | ≤2013 |
| Raymond James Financial INC | 3.15M | 0.28% | $304.3M | added +1.9% | ≤2013 |
| LPL Financial LLC | 3.07M | 0.27% | $296.4M | added +1.8% | ≤2013 |
| National Pension Service | 2.88M | 0.26% | $277.9M | trimmed -0.7% | 2014 Q3 |
| Dimensional Fund Advisors | 2.66M | 0.23% | $256.3M | added +3.2% | ≤2013 |
| Capital Research Global Investors | 2.61M | 0.23% | $252.4M | added +216.9% | 2020 Q2 |
| Citigroup INC | 2.61M | 0.23% | $252.3M | added +34.9% | ≤2013 |
| Envestnet Asset Management INC | 2.45M | 0.22% | $236.1M | added +7.7% | ≤2013 |
| Sumitomo Mitsui Trust Group, INC. | 2.44M | 0.22% | $235.5M | trimmed -5.7% | ≤2013 |
| Soroban Capital Partners LP (focused) | 2.38M | 0.21% | $229.3M | trimmed -61% | 2025 Q1 |
| Marshall Wace | 2.33M | 0.21% | $225.3M | added +223.9% | 2019 Q3 |
| Ensign Peak Advisors, INC | 2.26M | 0.20% | $217.8M | trimmed -12.8% | 2019 Q4 |
| Deutsche Bank AG\ | 2.12M | 0.19% | $204.4M | trimmed -23.4% | ≤2013 |
| CalPERS | 2.10M | 0.19% | $202.5M | trimmed -26.9% | ≤2013 |
| Commonwealth OF Pennsylvania Public School Empls Retrmt SYS | 1.96M | 0.17% | $188.7M | trimmed -5.5% | ≤2013 |
| Jennison Associates LLC | 1.93M | 0.17% | $186.3M | added +20.9% | 2022 Q3 |
| Pinnacle Financial Partners, INC. | 1.92M | 0.17% | $185.7M | added +16.7% | ≤2013 |
| Rhumbline Advisers | 1.92M | 0.17% | $185.6M | trimmed -1.1% | ≤2013 |
| Federated Hermes, INC. | 1.89M | 0.17% | $182.4M | added +5.8% | ≤2013 |
| Hsbc Holdings PLC | 1.75M | 0.15% | $168.9M | trimmed -5.3% | ≤2013 |
| Bank OF Montreal /CAN/ | 1.72M | 0.15% | $166.2M | trimmed -13.3% | ≤2013 |
| Energy Income Partners, LLC | 1.72M | 0.15% | $165.7M | trimmed -4.1% | ≤2013 |
Largest 50 of 2,304 shown; the full ranked, searchable register is at boothcheck.com/holders/SO. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.