Zenas BiopharmaZBIO
13F holders, Q3 2025 (September 30)80holders +7
14new positions
7sold out
2famous investors
$22.24avg. 13F price*
At the end of Q3 2025, 80 institutions reported holding Zenas Biopharma Inc. (ZBIO) in their 13F filings, up 7 from Q2 2025. 14 opened new positions and 7 sold out. The largest holders were SR One Capital Management, LP ($109.0M), FMR LLC ($107.0M) and Enavate Sciences Gp, LLC ($83.5M). 2 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Zenas Biopharma Inc.
- CUSIP
- 98937L105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 14 | $8.9M |
| Exits | 7 | $5.6M |
All 13F filers, Q2 2025 → Q3 2025: 2,413,501 shares bought and 1,642,953 shares sold, net +770,548 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 80 holders
| SR One Capital Management, LP | 15.77% | No change | 4,911,539 | $109.0M |
| FMR LLC | 0.01% | Add +45.0% | 4,820,370 | $107.0M |
| Enavate Sciences Gp, LLC | 25.50% | No change | 3,761,359 | $83.5M |
| NEA Management Company, LLC | 3.33% | No change | 2,733,719 | $60.7M |
| Novo Holdings A/S | 2.86% | Reduce -11.1% | 2,000,000 | $44.4M |
| Fairmount Funds Management LLC | 3.78% | No change | 1,892,806 | $42.0M |
| Federated Hermes, Inc. | 0.07% | No change | 1,861,838 | $41.3M |
| NVP Associates, LLC | 24.58% | No change | 1,838,482 | $40.8M |
| Deerfield Management Company, L.P. | 0.58% | No change | 1,562,942 | $34.7M |
| BlackRock, Inc. | 0.00% | Add +12.1% | 1,228,641 | $27.3M |
| Vivo Capital, LLC | 2.11% | No change | 1,183,260 | $26.3M |
| Vanguard Group Inc. | 0.00% | Add +17.2% | 1,162,758 | $25.8M |
| Wellington Management Group LLP | 0.00% | Reduce -2.4% | 857,524 | $19.0M |
| ArrowMark Colorado Holdings LLC | 0.34% | Reduce -24.6% | 824,668 | $18.3M |
| Pivotal bioVenture Partners Investment Advisor LLC | 10.00% | No change | 779,045 | $17.3M |
| Rock Springs Capital Management LP | 0.76% | Reduce -9.3% | 580,677 | $12.9M |
| Geode Capital Management, LLC | 0.00% | Add +25.8% | 470,035 | $10.4M |
| State Street Corp. | 0.00% | Add +21.7% | 377,485 | $8.4M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -22.9% | 374,298 | $8.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +46.0% | 178,396 | $4.0M |
| Eversept Partners, LP | 0.27% | Reduce -51.2% | 158,742 | $3.5M |
| Sectoral Asset Management Inc. | 2.08% | Reduce -27.8% | 152,025 | $3.4M |
| Invesco Ltd. | 0.00% | New | 145,796 | $3.2M |
| Northern Trust Corp. | 0.00% | Add +11.5% | 133,278 | $3.0M |
| Summit Wealth Group LLC / Co. | 0.28% | New | 51,356 | $2.7M |
| Schroder Investment Management Group | 0.00% | Reduce -27.3% | 112,612 | $2.3M |
| Superstring Capital Management LP | 2.11% | Reduce -13.4% | 96,665 | $2.1M |
| Morgan Stanley | 0.00% | Reduce -28.6% | 88,733 | $2.0M |
| Millennium Management | 0.00% | New | 71,850 | $1.6M |
| Bank of New York Mellon Corp | 0.00% | Add +8.5% | 41,688 | $925K |
| Stempoint Capital LP | 0.17% | New | 38,742 | $860K |
| UBS Group AG | 0.00% | Add +46.3% | 35,492 | $788K |
| AQR Capital Management | 0.00% | Reduce -0.3% | 24,584 | $546K |
| Barclays PLC | 0.00% | Reduce -17.8% | 22,876 | $508K |
| Rhumbline Advisers | 0.00% | Add +7.6% | 21,214 | $471K |
| Nuveen, LLC | 0.00% | Reduce -35.1% | 20,519 | $456K |
| Two Sigma Investments, LP | 0.00% | Add +3.9% | 20,382 | $452K |
| Alps Advisors Inc. | 0.00% | Reduce -11.1% | 20,042 | $445K |
| Alliancebernstein L.P. | 0.00% | Add +12.2% | 18,350 | $407K |
| Birchview Capital, LP | 0.28% | No change | 16,500 | $366K |
| Bank of America Corp. | 0.00% | Add +5.8% | 14,809 | $329K |
| Wells Fargo & Company | 0.00% | Add +19.5% | 12,455 | $277K |
| Deutsche Bank AG | 0.00% | Add +4266.8% | 12,227 | $271K |
| Royal Bank of Canada | 0.00% | Add +790.6% | 11,881 | $265K |
| Creative Planning | 0.00% | New | 11,882 | $264K |
| American Century Companies Inc. | 0.00% | New | 10,981 | $244K |
| MetLife Investment Management, LLC | 0.00% | No change | 10,100 | $224K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -16.0% | 7,461 | $166K |
| JPMorgan Chase & Co. | 0.00% | Reduce -14.7% | 6,548 | $145K |
| New York State Common Retirement Fund | 0.00% | No change | 6,200 | $138K |
| PNC Financial Services Group, Inc. | 0.00% | Reduce -36.3% | 5,843 | $130K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 4,499 | $100K |
| BNP Paribas Financial Markets | 0.00% | Add +120.0% | 3,146 | $70K |
| STRS Ohio | 0.00% | No change | 2,800 | $62K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 1,608 | $36K |
| Cwm, LLC | 0.00% | Add +0.3% | 1,469 | $33K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -45.5% | 1,388 | $31K |
| Legal & General Group Plc | 0.00% | Reduce -12.5% | 1,354 | $30K |
| Russell Investments Group, Ltd. | 0.00% | New | 1,345 | $30K |
| California State Teachers Retirement System | 0.00% | Add +0.1% | 1,145 | $25K |
| Quarry LP | 0.01% | Add +34.5% | 1,134 | $25K |
| Sterling Capital Management LLC | 0.00% | Add +155.3% | 1,121 | $25K |
| US Bancorp \de | 0.00% | Reduce -10.2% | 953 | $21K |
| Amalgamated Bank | 0.00% | No change | 524 | $12K |
| Aster Capital Management (DIFC) Ltd | 0.00% | New | 339 | $8K |
| Signaturefd, LLC | 0.00% | Add +12.5% | 332 | $7K |
| Citigroup Inc. | 0.00% | Reduce -96.5% | 188 | $4K |
| GAMMA Investing LLC | 0.00% | Add +131.7% | 183 | $4K |
| Nisa Investment Advisors, LLC | 0.00% | No change | 115 | $3K |
| Arax Advisory Partners | 0.00% | New | 115 | $3K |
| Osaic Holdings, Inc. | 0.00% | New | 104 | $2K |
| Physician Wealth Advisors, Inc. | 0.00% | No change | 67 | $1K |
| EverSource Wealth Advisors, LLC | 0.00% | No change | 58 | $1K |
| Farther Finance Advisors, LLC | 0.00% | New | 24 | $533 |
| Clearstead Advisors, LLC | 0.00% | No change | 23 | $511 |
| Global Retirement Partners, LLC | 0.00% | New | 15 | $333 |
| Sunbelt Securities, Inc. | 0.00% | New | 11 | $244 |
| True Wealth Design, LLC | 0.00% | No change | 3 | $67 |
| Essential Partners LLC | 0.00% | No change | 2 | $44 |
| SBI Securities Co., Ltd. | 0.00% | New | 1 | $22 |
"% of holder's portfolio" is ZBIO's weight in each manager's 13F, not the share of Zenas Biopharma Inc. the manager owns.