Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
152 institutional managers reported holding CMBT for the quarter ended Mar 31, 2026. Together they hold about 21% of shares outstanding; the top 10 hold 12%. 31 opened new positions; 19 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 4.40M | 2.25% | $55.8M | added +3.8% | 2015 Q2 |
| Encompass Capital Advisors LLC | 3.50M | 1.78% | $44.3M | added +40% | 2025 Q3 |
| Folketrygdfondet (focused) | 2.82M | 1.44% | $35.7M | unchanged | 2025 Q3 |
| Arrowstreet Capital | 2.29M | 1.17% | $29.0M | opened | 2025 Q3 |
| Citadel Advisors | 2.25M | 1.15% | $28.5M | added +175.8% | 2024 Q3 |
| Goldman Sachs | 1.83M | 0.94% | $23.2M | trimmed -35.6% | 2015 Q2 |
| Morgan Stanley | 1.56M | 0.80% | $19.8M | added +50.3% | 2015 Q2 |
| Renaissance Technologies | 1.41M | 0.72% | $17.8M | added +288.5% | 2025 Q3 |
| Jane Street | 1.39M | 0.71% | $17.6M | added +18.3% | 2025 Q3 |
| Two Sigma | 1.21M | 0.62% | $15.3M | added +616.6% | 2025 Q3 |
| Qube Research & Technologies LTD | 1.12M | 0.57% | $14.1M | opened | 2026 Q1 |
| Point72 | 1.08M | 0.55% | $13.7M | added +964.1% | 2025 Q3 |
| Bank OF America CORP /DE/ | 1.07M | 0.55% | $13.6M | added +526.9% | 2015 Q2 |
| Voloridge Investment Management | 1.06M | 0.54% | $13.4M | added +190.4% | 2025 Q4 |
| Citigroup INC | 851.5k | 0.43% | $10.8M | added +108.8% | 2025 Q2 |
| BNP Paribas Financial Markets | 838.7k | 0.43% | $10.6M | added +455698.4% | 2025 Q3 |
| Fearnley Asset Management AS (focused) | 700.7k | 0.36% | $8.9M | added +193.7% | 2025 Q4 |
| Barclays PLC | 698.0k | 0.36% | $8.8M | added +458.8% | 2015 Q2 |
| Trexquant Investment LP | 654.1k | 0.33% | $8.3M | opened | 2026 Q1 |
| Jump Financial | 643.9k | 0.33% | $8.2M | added +214.2% | 2025 Q3 |
| Walleye Capital LLC | 579.2k | 0.29% | $7.3M | added +4649.5% | 2025 Q4 |
| Oceanic Investment Management LTD (focused) | 564.9k | 0.29% | $7.2M | trimmed -43.4% | 2025 Q4 |
| D. E. Shaw | 520.6k | 0.27% | $6.6M | added +45.9% | 2025 Q3 |
| Millennium Management | 499.7k | 0.26% | $6.3M | trimmed -69.5% | 2025 Q4 |
| Susquehanna International Group | 429.6k | 0.22% | $5.4M | trimmed -55.5% | 2025 Q3 |
| Melqart Asset Management (UK) LTD (focused) | 418.2k | 0.21% | $5.3M | opened | 2026 Q1 |
| Graham Capital Wealth Management, LLC | 388.7k | 0.20% | $4.9M | trimmed -11.1% | 2025 Q3 |
| Allianz Asset Management GmbH | 380.1k | 0.19% | $4.8M | trimmed -4.5% | 2025 Q4 |
| Deutsche Bank AG\ | 371.3k | 0.19% | $4.7M | added +2.7% | 2025 Q3 |
| XTX Topco LTD | 367.4k | 0.19% | $4.7M | added +174.7% | 2025 Q1 |
| Aquatic Capital Management LLC | 360.5k | 0.18% | $4.6M | opened | 2026 Q1 |
| LPL Financial LLC | 343.0k | 0.17% | $4.3M | added +40.5% | 2025 Q3 |
| PDT Partners | 328.8k | 0.17% | $4.2M | opened | 2026 Q1 |
| Boothbay Fund Management, LLC | 313.8k | 0.16% | $4.0M | trimmed -13.4% | 2025 Q3 |
| Quantbot Technologies LP | 250.1k | 0.13% | $3.2M | trimmed -3.3% | 2025 Q3 |
| Swiss National Bank | 248.9k | 0.13% | $3.2M | unchanged | 2025 Q3 |
| UBS | 236.4k | 0.12% | $3.0M | trimmed -33.6% | 2015 Q2 |
| SG Americas Securities, LLC | 223.7k | 0.11% | $2.8M | added +90.4% | 2025 Q3 |
| Occudo Quantitative Strategies LP | 176.9k | 0.09% | $2.2M | opened | 2026 Q1 |
| Squarepoint Ops LLC | 148.7k | 0.08% | $1.9M | opened | 2025 Q3 |
| Engineers Gate Manager LP | 146.3k | 0.07% | $1.9M | added +192.8% | 2025 Q4 |
| Legal & General Group PLC | 144.3k | 0.07% | $1.8M | trimmed -35.7% | 2024 Q1 |
| Marnell Management LLC | 140.6k | 0.07% | $1.8M | trimmed -23.7% | 2025 Q4 |
| HRT Financial LP | 129.9k | 0.07% | $1.6M | opened | 2025 Q3 |
| Persistent Asset Partners LTD | 111.1k | 0.06% | $1.4M | added +102% | 2025 Q4 |
| Group ONE Trading LLC | 110.9k | 0.06% | $1.4M | trimmed -36.8% | 2023 Q1 |
| Numerai GP LLC | 106.8k | 0.05% | $1.4M | opened | 2026 Q1 |
| Nuveen | 91.1k | 0.05% | $1.2M | unchanged | 2025 Q3 |
| BTG Pactual Asset Management US LLC | 89.0k | 0.04% | $1.1M | opened | 2026 Q1 |
| BlackRock | 83.5k | 0.04% | $1.1M | added +22.4% | 2015 Q2 |
Largest 50 of 152 shown; the full ranked, searchable register is at boothcheck.com/holders/CMBT. 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.