Zenas BiopharmaZBIO
13F holders, Q2 2025 (June 30)73holders +6
10new positions
5sold out
2famous investors
$9.69avg. 13F price*
At the end of Q2 2025, 73 institutions reported holding Zenas Biopharma Inc. (ZBIO) in their 13F filings, up 6 from Q1 2025. 10 opened new positions and 5 sold out. The largest holders were SR One Capital Management, LP ($47.6M), Enavate Sciences Gp, LLC ($36.4M) and FMR LLC ($32.2M). 2 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors'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 Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 10 | $5.8M |
| Exits | 5 | $935K |
All 13F filers, Q1 2025 → Q2 2025: 2,224,609 shares bought and 659,301 shares sold, net +1,565,308 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 73 holders
| SR One Capital Management, LP | 10.32% | No change | 4,911,539 | $47.6M |
| Enavate Sciences Gp, LLC | 20.65% | No change | 3,761,359 | $36.4M |
| FMR LLC | 0.00% | Add +16.5% | 3,323,534 | $32.2M |
| NEA Management Company, LLC | 1.99% | Add +4.6% | 2,733,719 | $26.5M |
| Novo Holdings A/S | 1.54% | Add +1.6% | 2,250,000 | $21.8M |
| Fairmount Funds Management LLC | 2.38% | No change | 1,892,806 | $18.3M |
| Federated Hermes, Inc. | 0.03% | Add +60.8% | 1,861,838 | $18.0M |
| NVP Associates, LLC | 9.67% | No change | 1,838,482 | $17.8M |
| Deerfield Management Company, L.P. | 0.31% | No change | 1,562,942 | $15.1M |
| Vivo Capital, LLC | 1.17% | No change | 1,183,260 | $11.5M |
| BlackRock, Inc. | 0.00% | Add +8.0% | 1,095,609 | $10.6M |
| ArrowMark Colorado Holdings LLC | 0.19% | Reduce -0.3% | 1,094,338 | $10.6M |
| Vanguard Group Inc. | 0.00% | Add +1.7% | 992,212 | $9.6M |
| Wellington Management Group LLP | 0.00% | Add +0.6% | 878,918 | $8.5M |
| Pivotal bioVenture Partners Investment Advisor LLC | 4.68% | Add +5.8% | 779,045 | $7.5M |
| Rock Springs Capital Management LP | 0.39% | Reduce -27.1% | 640,467 | $6.2M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -6.3% | 485,202 | $4.7M |
| Geode Capital Management, LLC | 0.00% | Add +4.6% | 373,617 | $3.6M |
| Eversept Partners, LP | 0.32% | Reduce -27.0% | 325,479 | $3.2M |
| State Street Corp. | 0.00% | Add +16.5% | 310,236 | $3.0M |
| Citadel Advisors | 0.00% | New | 293,785 | $2.8M |
| Catalio Capital Management, LP | 0.44% | Reduce -27.1% | 215,314 | $2.1M |
| Sectoral Asset Management Inc. | 1.35% | New | 210,625 | $2.0M |
| Schroder Investment Management Group | 0.00% | Reduce -5.6% | 154,916 | $1.5M |
| Morgan Stanley | 0.00% | Add +59.5% | 124,301 | $1.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +5.2% | 122,210 | $1.2M |
| Northern Trust Corp. | 0.00% | Reduce -0.6% | 119,515 | $1.2M |
| Superstring Capital Management LP | 1.35% | No change | 111,605 | $1.1M |
| Bank of New York Mellon Corp | 0.00% | Add +9.2% | 38,433 | $372K |
| Nuveen, LLC | 0.00% | No change | 31,626 | $306K |
| Barclays PLC | 0.00% | Add +72.1% | 27,813 | $270K |
| AQR Capital Management | 0.00% | New | 24,668 | $239K |
| UBS Group AG | 0.00% | Add +16.9% | 24,263 | $235K |
| Alps Advisors Inc. | 0.00% | Reduce -19.8% | 22,553 | $219K |
| Rhumbline Advisers | 0.00% | Add +71.3% | 19,721 | $191K |
| Two Sigma Investments, LP | 0.00% | New | 19,617 | $190K |
| Susquehanna International Group, LLP | 0.00% | Add +4.8% | 19,541 | $189K |
| Birchview Capital, LP | 0.16% | No change | 16,500 | $160K |
| Alliancebernstein L.P. | 0.00% | New | 16,360 | $159K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | New | 14,900 | $144K |
| Bank of America Corp. | 0.00% | Add +32.3% | 13,991 | $136K |
| Intech Investment Management LLC | 0.00% | Add +13.8% | 13,206 | $128K |
| Alpine Global Management, LLC | 0.03% | New | 12,907 | $125K |
| Sei Investments Co. | 0.00% | Add +1.6% | 12,142 | $118K |
| Wells Fargo & Company | 0.00% | Add +27.7% | 10,424 | $101K |
| MetLife Investment Management, LLC | 0.00% | Add +0.1% | 10,100 | $98K |
| PNC Financial Services Group, Inc. | 0.00% | Add +41.2% | 9,179 | $89K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -1.1% | 8,886 | $86K |
| JPMorgan Chase & Co. | 0.00% | Add +5.6% | 7,676 | $74K |
| New York State Common Retirement Fund | 0.00% | No change | 6,200 | $60K |
| Citigroup Inc. | 0.00% | Reduce -49.6% | 5,451 | $53K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 4,499 | $44K |
| STRS Ohio | 0.00% | No change | 2,800 | $27K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +80.4% | 2,546 | $25K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 1,608 | $16K |
| Legal & General Group Plc | 0.00% | Add +1.9% | 1,548 | $15K |
| Cwm, LLC | 0.00% | Add +207.8% | 1,465 | $14K |
| BNP Paribas Financial Markets | 0.00% | Reduce -94.3% | 1,430 | $14K |
| Royal Bank of Canada | 0.00% | Add +193.8% | 1,334 | $13K |
| California State Teachers Retirement System | 0.00% | No change | 1,144 | $11K |
| US Bancorp \de | 0.00% | Add +288.6% | 1,061 | $10K |
| Quarry LP | 0.00% | New | 843 | $8K |
| Amalgamated Bank | 0.00% | No change | 524 | $5K |
| Sterling Capital Management LLC | 0.00% | Add +235.1% | 439 | $4K |
| Signaturefd, LLC | 0.00% | Add +130.5% | 295 | $3K |
| Deutsche Bank AG | 0.00% | Reduce -98.8% | 280 | $3K |
| Nisa Investment Advisors, LLC | 0.00% | Add +310.7% | 115 | $1K |
| GAMMA Investing LLC | 0.00% | Add +92.7% | 79 | $766 |
| Physician Wealth Advisors, Inc. | 0.00% | New | 67 | $650 |
| EverSource Wealth Advisors, LLC | 0.00% | Add +2800.0% | 58 | $562 |
| Clearstead Advisors, LLC | 0.00% | New | 23 | $223 |
| True Wealth Design, LLC | 0.00% | No change | 3 | $30 |
| Essential Partners LLC | 0.00% | — | 2 | $19 |
"% of holder's portfolio" is ZBIO's weight in each manager's 13F, not the share of Zenas Biopharma Inc. the manager owns.