Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
163 institutional managers reported holding CTOS for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 85%. 37 opened new positions; 28 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Platinum Equity Advisors, LLC/DE (focused) | 156.74M | 69.16% | $1.03B | unchanged | 2021 Q2 |
| Canvas Wealth Advisors, LLC | 7.02M | 3.10% | $46.1M | unchanged | 2022 Q1 |
| Mirae Asset Global Etfs Holdings LTD. | 5.67M | 2.50% | $37.3M | added +4.3% | 2022 Q2 |
| Dimensional Fund Advisors | 5.60M | 2.47% | $36.8M | added +15.3% | 2023 Q2 |
| BlackRock | 4.25M | 1.88% | $27.9M | trimmed -1.4% | 2021 Q2 |
| Allspring Global Investments Holdings, LLC | 3.91M | 1.73% | $25.7M | trimmed -6.8% | 2021 Q4 |
| Vanguard Group | 3.51M | 1.55% | $23.1M | added +1.3% | 2021 Q2 |
| Alyeska Investment Group | 2.83M | 1.25% | $18.6M | added +13% | 2021 Q2 |
| Boston Partners | 2.02M | 0.89% | $13.2M | trimmed -46.8% | 2024 Q4 |
| State Street | 1.49M | 0.66% | $9.8M | added +9.7% | 2021 Q2 |
| Geode Capital | 1.47M | 0.65% | $9.7M | added +2.2% | 2021 Q2 |
| Clearbridge Investments, LLC | 1.40M | 0.62% | $9.2M | trimmed -2.8% | 2021 Q2 |
| First Trust Advisors LP | 1.30M | 0.57% | $8.5M | added +6.4% | 2021 Q4 |
| Bank OF America CORP /DE/ | 1.20M | 0.53% | $7.9M | trimmed -19.2% | 2021 Q2 |
| Arrowstreet Capital | 1.06M | 0.47% | $6.9M | added +154.9% | 2025 Q3 |
| Heartland Advisors INC | 1.00M | 0.44% | $6.6M | added +42.9% | 2024 Q1 |
| Morgan Stanley | 897.5k | 0.40% | $5.9M | added +25.6% | 2021 Q2 |
| Intrinsic Edge Capital Management LLC | 879.6k | 0.39% | $5.8M | added +12.8% | 2025 Q3 |
| Bridgeway Capital Management, LLC | 845.1k | 0.37% | $5.6M | added +9.4% | 2025 Q2 |
| Empowered Funds, LLC | 810.1k | 0.36% | $5.3M | added +9.9% | 2025 Q2 |
| First Eagle Investment Management | 765.8k | 0.34% | $5.0M | trimmed -1.6% | 2025 Q1 |
| Jane Street | 660.5k | 0.29% | $4.3M | added +91.5% | 2021 Q4 |
| AQR Capital | 650.7k | 0.29% | $4.3M | added +285.1% | 2025 Q1 |
| Mackenzie Financial CORP | 589.1k | 0.26% | $3.9M | opened | 2026 Q1 |
| Russell Investments Group, LTD. | 542.9k | 0.24% | $3.6M | trimmed -42.2% | 2023 Q3 |
| Charles Schwab Investment Management | 517.4k | 0.23% | $3.4M | added +2.5% | 2021 Q2 |
| Goldman Sachs | 515.7k | 0.23% | $3.4M | added +39.7% | 2021 Q2 |
| Northern Trust | 489.1k | 0.22% | $3.2M | added +3.7% | 2021 Q2 |
| Hotchkis & Wiley Capital Management LLC | 452.6k | 0.20% | $3.0M | opened | 2026 Q1 |
| HRT Financial LP | 411.9k | 0.18% | $2.7M | opened | 2026 Q1 |
| Silvercrest Asset Management Group LLC | 394.4k | 0.17% | $2.6M | opened | 2026 Q1 |
| Sendero Wealth Management, LLC | 390.8k | 0.17% | $2.6M | unchanged | 2023 Q2 |
| Citigroup INC | 384.7k | 0.17% | $2.5M | trimmed -26.2% | 2021 Q2 |
| EFG International AG | 351.0k | 0.15% | $2.3M | trimmed -5.1% | 2025 Q3 |
| Private Capital Management, LLC | 327.5k | 0.14% | $2.2M | unchanged | 2025 Q3 |
| Citadel Advisors | 280.4k | 0.12% | $1.8M | added +339.4% | 2021 Q2 |
| Millennium Management | 257.8k | 0.11% | $1.7M | trimmed -18.9% | 2025 Q4 |
| Invesco | 244.1k | 0.11% | $1.6M | added +3% | 2021 Q2 |
| Point72 | 242.2k | 0.11% | $1.6M | trimmed -37.2% | 2025 Q1 |
| Tudor Investment | 228.5k | 0.10% | $1.5M | opened | 2026 Q1 |
| SEI Investments CO | 227.6k | 0.10% | $1.5M | added +35.7% | 2021 Q2 |
| Voleon Capital Management LP | 220.2k | 0.10% | $1.4M | trimmed -8.5% | 2025 Q3 |
| Gilder Gagnon Howe & CO LLC | 217.9k | 0.10% | $1.4M | trimmed -46.8% | 2021 Q2 |
| UBS | 215.5k | 0.10% | $1.4M | trimmed -17.3% | 2021 Q2 |
| Algert Global LLC | 195.8k | 0.09% | $1.3M | opened | 2026 Q1 |
| D. E. Shaw | 182.8k | 0.08% | $1.2M | opened | 2026 Q1 |
| Trexquant Investment LP | 179.4k | 0.08% | $1.2M | trimmed -43.9% | 2025 Q4 |
| Register Financial Advisors LLC | 171.2k | 0.08% | $1.1M | trimmed -1.2% | 2023 Q2 |
| Mariner, LLC | 168.2k | 0.07% | $1.1M | added +21.4% | 2022 Q3 |
| BNY Mellon | 156.2k | 0.07% | $1.0M | trimmed -3.3% | 2021 Q2 |
Largest 50 of 163 shown; the full ranked, searchable register is at boothcheck.com/holders/CTOS. 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.