Zenas BiopharmaZBIO
13F holders, Q2 2026 (June 30)144holders +4
26new positions
22sold out
4famous investors
$25.28avg. 13F price*
At the end of Q2 2026, 144 institutions reported holding Zenas Biopharma Inc. (ZBIO) in their 13F filings, up 4 from Q1 2026. 26 opened new positions and 22 sold out. The largest holders were FMR LLC ($241.3M), SR One Capital Management, LP ($127.9M) and NEA Management Company, LLC ($102.1M). 4 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Zenas Biopharma Inc.
- CUSIP
- 98937L105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 26 | $9.8M |
| Exits | 22 | $30.7M |
All 13F filers, Q1 2026 → Q2 2026: 6,986,129 shares bought and 3,510,827 shares sold, net +3,475,302 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 144 holders
| FMR LLC | 0.01% | Add +4.7% | 9,506,701 | $241.3M |
| SR One Capital Management, LP | 12.31% | No change | 5,037,854 | $127.9M |
| NEA Management Company, LLC | 6.43% | No change | 4,023,219 | $102.1M |
| Enavate Sciences Gp, LLC | 28.80% | No change | 3,919,159 | $99.5M |
| Federated Hermes, Inc. | 0.11% | Reduce -0.3% | 3,116,805 | $79.1M |
| BlackRock, Inc. | 0.00% | Add +31.8% | 2,686,225 | $68.2M |
| Capital International Investors | 0.01% | Add +2.8% | 2,502,912 | $63.5M |
| Polar Capital Holdings Plc | 0.17% | Reduce -5.3% | 2,412,772 | $61.2M |
| Royalty Pharma Sub-Manager, LLC | 25.05% | No change | 2,388,150 | $60.6M |
| Fairmount Funds Management LLC | 3.96% | No change | 2,359,025 | $59.9M |
| State Street Corp. | 0.00% | Add +39.7% | 2,055,100 | $52.2M |
| NVP Associates, LLC | 14.22% | No change | 1,838,482 | $46.7M |
| Wellington Management Group LLP | 0.01% | Add +27.9% | 1,593,819 | $40.5M |
| Vanguard Capital Management LLC | 0.00% | Add +8.8% | 1,354,864 | $34.4M |
| Bank of America Corp. | 0.00% | Add +217.0% | 1,231,159 | $31.2M |
| T. Rowe Price Associates Inc. | 0.00% | Add +243.4% | 1,226,928 | $31.1M |
| Geode Capital Management, LLC | 0.00% | Add +34.6% | 882,654 | $22.4M |
| Alliancebernstein L.P. | 0.01% | Add +23.0% | 1,103,388 | $21.6M |
| Two Sigma Investments, LP | 0.02% | Add +196.4% | 815,150 | $20.7M |
| EcoR1 Capital, LLC | 0.99% | No change | 789,500 | $20.0M |
| Millennium Management | 0.01% | Add +38.5% | 660,470 | $16.8M |
| Woodline Partners LP | 0.05% | Add +0.0% | 590,539 | $15.0M |
| Balyasny Asset Management L.P. | 0.03% | Reduce -13.5% | 576,717 | $14.6M |
| ArrowMark Colorado Holdings LLC | 0.61% | Reduce -13.0% | 573,318 | $14.6M |
| Silverarc Capital Management, LLC | 1.44% | Reduce -55.1% | 509,789 | $12.9M |
| Rock Springs Capital Management LP | 0.62% | No change | 502,077 | $12.7M |
| Pivotal bioVenture Partners Investment Advisor LLC | 4.05% | Reduce -17.1% | 490,766 | $12.5M |
| NEXTBio Capital Management LP | 4.98% | No change | 426,736 | $10.8M |
| Vestal Point Capital, LP | 0.22% | Add +82.5% | 365,000 | $9.3M |
| Marshall Wace, LLP | 0.01% | Reduce -35.6% | 323,442 | $8.2M |
| Jennison Associates LLC | 0.00% | Add +25.6% | 314,049 | $8.0M |
| Vanguard Portfolio Management LLC | 0.00% | Add +21.3% | 304,870 | $7.7M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +34.6% | 302,085 | $7.7M |
| Northern Trust Corp. | 0.00% | Add +44.4% | 281,140 | $7.1M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -28.9% | 271,163 | $6.9M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +41.9% | 254,623 | $6.5M |
| Sphera Funds Management LTD. | 0.84% | Add +7.7% | 230,834 | $5.9M |
| iA Global Asset Management Inc. | 0.06% | Reduce -0.3% | 215,130 | $5.5M |
| Walleye Capital LLC | 0.03% | Add +66.9% | 209,050 | $5.3M |
| Sio Capital Management, LLC | 0.91% | Reduce -37.1% | 208,557 | $5.3M |
| Citadel Advisors | 0.00% | Add +192.8% | 195,780 | $5.0M |
| UBS Group AG | 0.00% | Reduce -51.5% | 178,089 | $4.5M |
| Voleon Capital Management LP | 0.08% | Add +464.4% | 167,145 | $4.2M |
| BNP Paribas Financial Markets | 0.00% | Add +1411.0% | 151,086 | $3.8M |
| Morgan Stanley | 0.00% | Add +44.5% | 134,979 | $3.4M |
| Squarepoint Ops LLC | 0.01% | Add +192.0% | 125,185 | $3.2M |
| Barclays PLC | 0.00% | Add +291.6% | 115,965 | $2.9M |
| Seven Grand Managers, LLC | 0.10% | No change | 100,000 | $2.5M |
| Birchview Capital, LP | 1.11% | Add +33.7% | 93,601 | $2.4M |
| Verition Fund Management LLC | 0.01% | New | 72,988 | $1.9M |
| Bank of New York Mellon Corp | 0.00% | Add +15.8% | 70,477 | $1.8M |
| J. Goldman & Co LP | 0.06% | Add +85.4% | 68,232 | $1.7M |
| CSM Advisors, LLC | 0.04% | New | 67,622 | $1.7M |
| Nuveen, LLC | 0.00% | Reduce -1.7% | 66,638 | $1.7M |
| Alps Advisors Inc. | 0.01% | Add +45.7% | 63,675 | $1.6M |
| Swiss National Bank | 0.00% | Add +68.3% | 53,200 | $1.4M |
| Exome Asset Management LLC | 0.82% | Reduce -35.0% | 52,443 | $1.3M |
| Jump Financial, LLC | 0.01% | Reduce -15.0% | 51,022 | $1.3M |
| Citigroup Inc. | 0.00% | Add +400.8% | 49,521 | $1.3M |
| Los Angeles Capital Management LLC | 0.00% | New | 48,465 | $1.2M |
| XTX Topco Ltd | 0.01% | Add +107.3% | 40,034 | $1.0M |
| Burkehill Global Management, LP | 0.04% | No change | 40,000 | $1.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +143.4% | 37,790 | $959K |
| Rafferty Asset Management, LLC | 0.00% | Reduce -22.1% | 37,509 | $952K |
| Atom Investors LP | 0.08% | Reduce -65.3% | 37,149 | $943K |
| Rhumbline Advisers | 0.00% | Add +27.7% | 34,245 | $869K |
| Boothbay Fund Management, LLC | 0.02% | New | 33,280 | $845K |
| AQR Capital Management | 0.00% | Reduce -39.0% | 31,100 | $789K |
| California State Teachers Retirement System | 0.00% | Add +86.3% | 29,471 | $748K |
| Deutsche Bank AG | 0.00% | Add +49.9% | 28,881 | $733K |
| DCF Advisers, LLC | 0.19% | New | 28,184 | $715K |
| State of Wisconsin Investment Board | 0.00% | Add +29.4% | 26,922 | $683K |
| JPMorgan Chase & Co. | 0.00% | Reduce -2.6% | 24,445 | $661K |
| Wells Fargo & Company | 0.00% | Add +192.6% | 25,995 | $660K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | Add +93.8% | 20,623 | $523K |
| Legal & General Group Plc | 0.00% | Add +91.9% | 20,023 | $508K |
| Invesco Ltd. | 0.00% | Reduce -83.3% | 18,954 | $481K |
| China Universal Asset Management Co., Ltd. | 0.03% | Add +39.4% | 18,848 | $478K |
| Profund Advisors LLC | 0.01% | Reduce -12.0% | 18,838 | $478K |
| Allstate Corp. | 0.00% | Add +0.1% | 18,241 | $463K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +21.1% | 17,423 | $443K |
| Y-Intercept (Hong Kong) Ltd | 0.01% | New | 17,332 | $440K |
| MetLife Investment Management, LLC | 0.00% | Add +32.0% | 17,041 | $433K |
| Virtus Investment Advisers, LLC | 0.10% | Add +146.0% | 16,525 | $419K |
| Point72 Asset Management | 0.00% | New | 16,136 | $410K |
| Vanguard Global Advisers, LLC | 0.00% | Reduce -26.4% | 15,332 | $389K |
| Nordea Investment Management AB | 0.00% | New | 15,050 | $383K |
| Brevan Howard Capital Management LP | 0.01% | New | 14,674 | $372K |
| Engineers Gate Manager LP | 0.00% | New | 12,980 | $329K |
| Russell Investments Group, Ltd. | 0.00% | Add +368.2% | 12,740 | $323K |
| Creative Planning | 0.00% | Reduce -7.4% | 11,723 | $298K |
| VARCOV Co. | 0.10% | New | 10,505 | $267K |
| New York State Common Retirement Fund | 0.00% | Add +66.1% | 10,300 | $261K |
| Massachusetts Financial Services Co. | 0.00% | New | 9,053 | $230K |
| Scientech Research LLC | 0.19% | Reduce -30.3% | 9,028 | $229K |
| Dimensional Fund Advisors LP | 0.00% | New | 8,874 | $225K |
| HRT Financial LP | 0.00% | Reduce -65.5% | 8,879 | $225K |
| Quantinno Capital Management LP | 0.00% | Reduce -59.4% | 8,581 | $218K |
| State of New Jersey Common Pension Fund D | 0.00% | New | 8,571 | $218K |
| SG Americas Securities, LLC | 0.00% | New | 8,442 | $214K |
"% of holder's portfolio" is ZBIO's weight in each manager's 13F, not the share of Zenas Biopharma Inc. the manager owns.