Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
212 institutional managers reported holding SOC for the quarter ended Mar 31, 2026. Together they hold about 95% of shares outstanding; the top 10 hold 66%. 47 opened new positions; 35 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Pilgrim Global Advisors LLC (focused) | 18.21M | 12.67% | unchanged | 2024 Q1 | |
| Continental General Insurance CO (focused) | 13.71M | 9.54% | added +2041.1% | 2025 Q4 | |
| Encompass Capital Advisors LLC | 13.45M | 9.36% | unchanged | 2024 Q3 | |
| BlackRock | 9.36M | 6.51% | added +39.5% | 2024 Q2 | |
| Vanguard Group | 8.36M | 5.82% | added +10.6% | 2024 Q2 | |
| Capital International Investors | 7.57M | 5.27% | trimmed -34.7% | 2025 Q3 | |
| Morgan Stanley | 7.27M | 5.06% | added +39% | 2024 Q1 | |
| FourWorld Capital Management LLC (focused) | 7.21M | 5.02% | trimmed -11% | 2025 Q4 | |
| Two Seas Capital LP (focused) | 5.50M | 3.83% | added +217.1% | 2024 Q4 | |
| State Street | 4.61M | 3.21% | added +22.1% | 2024 Q1 | |
| Geode Capital | 2.96M | 2.06% | added +29.1% | 2024 Q2 | |
| Alyeska Investment Group | 2.69M | 1.87% | trimmed -75.7% | 2024 Q1 | |
| Capital Group (American Funds) | 2.36M | 1.65% | opened | 2026 Q1 | |
| Susquehanna International Group | 2.21M | 1.54% | added +399.1% | 2024 Q3 | |
| BW Gestao de Investimentos Ltda. | 2.13M | 1.48% | added +45.1% | 2025 Q4 | |
| Verition Fund Management | 2.04M | 1.42% | trimmed -16.8% | 2024 Q4 | |
| Millennium Management | 1.92M | 1.33% | trimmed -40.7% | 2025 Q1 | |
| Goldman Sachs | 1.92M | 1.33% | added +100.7% | 2024 Q2 | |
| Whitefort Capital Management, LP (focused) | 1.54M | 1.07% | trimmed -19.2% | 2025 Q4 | |
| UBS | 1.50M | 1.04% | trimmed -47.5% | 2024 Q2 | |
| Boothbay Fund Management, LLC | 1.47M | 1.02% | opened | 2026 Q1 | |
| Bank OF America CORP /DE/ | 1.30M | 0.90% | added +224.7% | 2024 Q1 | |
| Charles Schwab Investment Management | 1.02M | 0.71% | added +10% | 2024 Q2 | |
| Northern Trust | 1.01M | 0.71% | added +41% | 2024 Q2 | |
| GM Advisory Group, LLC | 1.00M | 0.70% | unchanged | 2024 Q2 | |
| Aventail Capital Group, LP | 991.7k | 0.69% | trimmed -21.6% | 2024 Q1 | |
| Citadel Advisors | 743.6k | 0.52% | trimmed -68.2% | 2024 Q1 | |
| LPL Financial LLC | 730.5k | 0.51% | added +72.2% | 2024 Q4 | |
| Hite Hedge Asset Management LLC | 714.3k | 0.50% | opened | 2026 Q1 | |
| Plustick Management LLC (focused) | 675.0k | 0.47% | added +92.9% | 2025 Q4 | |
| Trexquant Investment LP | 473.5k | 0.33% | trimmed -8.5% | 2025 Q4 | |
| Philadelphia Financial Management of San Francisco, LLC (focused) | 453.7k | 0.32% | added +38.3% | 2025 Q4 | |
| Nuveen | 399.1k | 0.28% | added +286.1% | 2024 Q2 | |
| Purpose Unlimited INC. | 394.2k | 0.27% | added +229.8% | 2025 Q4 | |
| Weiss Asset Management LP | 328.2k | 0.23% | unchanged | 2025 Q3 | |
| BNY Mellon | 323.7k | 0.23% | added +62.9% | 2024 Q2 | |
| Invesco | 312.9k | 0.22% | added +133.7% | 2024 Q2 | |
| Rockefeller Capital Management L.p. | 263.8k | 0.18% | opened | 2025 Q1 | |
| Kore Advisors LP (focused) | 257.2k | 0.18% | added +70.2% | 2025 Q3 | |
| Barclays PLC | 207.4k | 0.14% | trimmed -65.7% | 2024 Q2 | |
| Mirabella Financial Services LLP | 201.4k | 0.14% | added +656.4% | 2025 Q4 | |
| Swiss National Bank | 200.0k | 0.14% | unchanged | 2024 Q2 | |
| IMC-Chicago, LLC | 192.1k | 0.13% | added +7.1% | 2024 Q4 | |
| BNP Paribas Financial Markets | 175.7k | 0.12% | added +14.4% | 2024 Q2 | |
| HRT Financial LP | 166.7k | 0.12% | trimmed -62.6% | 2025 Q1 | |
| Man Group | 152.0k | 0.11% | trimmed -61.1% | 2025 Q4 | |
| Rafferty Asset Management, LLC | 149.0k | 0.10% | trimmed -5.4% | 2024 Q3 | |
| Balyasny Asset Management | 143.8k | 0.10% | added +690.5% | 2025 Q2 | |
| Capital Fund Management S.a. | 137.6k | 0.10% | added +44.1% | 2024 Q4 | |
| Rhumbline Advisers | 131.0k | 0.09% | added +43.3% | 2024 Q2 |
Largest 50 of 212 shown; the full ranked, searchable register is at boothcheck.com/holders/SOC. 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.