Zenas BioPharma, Inc.
ZBIO- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001953926
No open-market purchases or sales by Zenas BioPharma, Inc. insiders were filed in the last 90 days; 144 institutions reported holding it in 13F filings for Q2 2026, worth $1.55B in total; no superinvestor holds it.
13F holders, Q2 2025
Institutional positions in Zenas BioPharma, Inc. as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 73
- +6 vs. Q1 2025
- Shares held
- 34.1M
- +1.57M (+4.8%) vs. Q1 2025
- Total value
- $330.0M
- +$73.3M (+28.5%) vs. Q1 2025
- New holders
- 11
- 34 more added
- Sold out
- 5
- 12 more reduced
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ZBIO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 144 | $1.55B |
| Q1 2026 | 140 | $1.14B |
| Q4 2025 | 119 | $1.55B |
| Q3 2025 | 80 | $774.5M |
| Q2 2025 | 73 | $330.0M |
| Q1 2025 | 67 | $256.7M |
| Q4 2024 | 65 | $259.6M |
| Q3 2024 | 44 | $418.5M |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding Zenas BioPharma, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sr One Capital Management, LP | 4,911,539 | $47.6M | 10.32% | 00.0% | Unchanged |
| Enavate Sciences GP, LLC | 3,761,359 | $36.4M | 20.65% | 00.0% | Unchanged |
| FMR LLC | 3,323,534 | $32.2M | 0.00% | +471,163+16.5% | Added |
| NEA Management Company, LLC | 2,733,719 | $26.5M | 1.99% | +119,771+4.6% | Added |
| Novo Holdings A/S | 2,250,000 | $21.8M | 1.54% | +35,033+1.6% | Added |
| Fairmount Funds Management LLC | 1,892,806 | $18.3M | 2.38% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 1,861,838 | $18.0M | 0.03% | +703,838+60.8% | Added |
| NVP Associates, LLC | 1,838,482 | $17.8M | 9.67% | 00.0% | Unchanged |
| Deerfield Management Company, L.P. (Series C) | 1,562,942 | $15.1M | 0.27% | 00.0% | Unchanged |
| Vivo Capital, LLC | 1,183,260 | $11.5M | 1.17% | 00.0% | Unchanged |
| BlackRock, Inc. | 1,095,609 | $10.6M | 0.00% | +81,499+8.0% | Added |
| ArrowMark Colorado Holdings LLC | 1,094,338 | $10.6M | 0.19% | −3,031−0.3% | Reduced |
| Vanguard Group Inc | 992,212 | $9.61M | 0.00% | +16,306+1.7% | Added |
| Wellington Management Group LLP | 878,918 | $8.52M | 0.00% | +5,295+0.6% | Added |
| Pivotal bioVenture Partners Investment Advisor LLC | 779,045 | $7.55M | 4.68% | +42,400+5.8% | Added |
| Rock Springs Capital Management LP | 640,467 | $6.21M | 0.39% | −238,200−27.1% | Reduced |
| Price T Rowe Associates Inc | 485,202 | $4.70M | 0.00% | −32,404−6.3% | Reduced |
| Geode Capital Management, LLC | 373,617 | $3.62M | 0.00% | +16,461+4.6% | Added |
| Eversept Partners, LP | 325,479 | $3.15M | 0.32% | −120,109−27.0% | Reduced |
| State Street Corp | 310,236 | $3.01M | 0.00% | +44,036+16.5% | Added |
| Citadel Advisors LLC | 293,785 | $2.85M | 0.00% | +293,785 | New |
| Catalio Capital Management, LP | 215,314 | $2.09M | 0.44% | −79,834−27.0% | Reduced |
| Sectoral Asset Management Inc | 210,625 | $2.04M | 1.35% | +210,625 | New |
| Schroder Investment Management Group | 154,916 | $1.48M | 0.00% | −9,119−5.6% | Reduced |
| Morgan Stanley | 124,301 | $1.20M | 0.00% | +46,391+59.5% | Added |
| Charles Schwab Investment Management Inc | 122,210 | $1.18M | 0.00% | +6,070+5.2% | Added |
| Northern Trust Corp | 119,515 | $1.16M | 0.00% | −723−0.6% | Reduced |
| Superstring Capital Management LP | 111,605 | $1.08M | 1.35% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 38,433 | $372.4K | 0.00% | +3,245+9.2% | Added |
| Nuveen, LLC | 31,626 | $306.5K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 27,813 | $269.5K | 0.00% | +11,653+72.1% | Added |
| AQR Capital Management LLC | 24,668 | $239.0K | 0.00% | +24,668 | New |
| UBS Group AG | 24,263 | $235.1K | 0.00% | +3,498+16.8% | Added |
| Alps Advisors Inc | 22,553 | $218.5K | 0.00% | −5,579−19.8% | Reduced |
| Rhumbline Advisers | 19,721 | $191.1K | 0.00% | +8,207+71.3% | Added |
| Two Sigma Investments, LP | 19,617 | $190.1K | 0.00% | +19,617 | New |
| Susquehanna International Group, LLP | 19,541 | $189.4K | 0.00% | +904+4.9% | Added |
| Birchview Capital, LP | 16,500 | $159.9K | 0.16% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 16,360 | $158.5K | 0.00% | +16,360 | New |
| UBS Asset Management Americas Inc | 14,900 | $144.4K | 0.00% | +14,900 | New |
| Bank of America Corp | 13,991 | $135.6K | 0.00% | +3,412+32.3% | Added |
| Intech Investment Management LLC | 13,206 | $128.0K | 0.00% | +1,607+13.9% | Added |
| Alpine Global Management, LLC | 12,907 | $125.1K | 0.03% | +12,907 | New |
| SEI Investments Co | 12,142 | $117.6K | 0.00% | +186+1.6% | Added |
| Wells Fargo & Company | 10,424 | $101.0K | 0.00% | +2,261+27.7% | Added |
| MetLife Investment Management | 10,100 | $97.9K | 0.00% | +13+0.1% | Added |
| The PNC Financial Services Group, Inc. | 9,179 | $88.9K | 0.00% | +2,679+41.2% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 8,886 | $86.1K | 0.00% | −100−1.1% | Reduced |
| JPMorgan Chase & Co | 7,676 | $74.4K | 0.00% | +409+5.6% | Added |
| New York State Common Retirement Fund | 6,200 | $60.1K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 5,451 | $52.8K | 0.00% | −5,359−49.6% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 4,499 | $43.6K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 2,800 | $27.1K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 2,546 | $24.7K | 0.00% | +1,135+80.4% | Added |
| Ameritas Investment Partners, Inc. | 1,608 | $15.6K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 1,548 | $15.0K | 0.00% | +29+1.9% | Added |
| CWM, LLC | 1,465 | $14.0K | 0.00% | +989+207.8% | Added |
| BNP Paribas Arbitrage, SA | 1,430 | $13.9K | 0.00% | −23,868−94.3% | Reduced |
| Royal Bank of Canada | 1,334 | $13.0K | 0.00% | +880+193.8% | Added |
| California State Teachers Retirement System | 1,144 | $11.1K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 1,061 | $10.3K | 0.00% | +788+288.6% | Added |
| Quarry LP | 843 | $8.17K | 0.00% | +843 | New |
| Amalgamated Bank | 524 | $5.00K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 439 | $4.25K | 0.00% | +308+235.1% | Added |
| Signaturefd, LLC | 295 | $2.86K | 0.00% | +167+130.5% | Added |
| Deutsche Bank AG | 280 | $2.71K | 0.00% | −22,710−98.8% | Reduced |
| Nisa Investment Advisors, LLC | 115 | $1.11K | 0.00% | +87+310.7% | Added |
| GAMMA Investing LLC | 79 | $766 | 0.00% | +38+92.7% | Added |
| UMA Financial Services, Inc. | 67 | $650 | 0.00% | +67 | New |
| EverSource Wealth Advisors, LLC | 58 | $562 | 0.00% | +56+2,800.0% | Added |
| Clearstead Advisors, LLC | 23 | $223 | 0.00% | +23 | New |
| True Wealth Design, LLC | 3 | $30 | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 2 | $19 | 0.00% | +2 | New |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −44,067−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −31,757−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −23,957−100.0% | Sold out |
| Stoneridge Investment Partners LLC | 0 | $0 | 0.00% | −10,955−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −7,529−100.0% | Sold out |