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, Q1 2025
Institutional positions in Zenas BioPharma, Inc. as of Mar 31, 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
- 67
- +3 vs. Q4 2024
- Shares held
- 32.5M
- +810.0K (+2.6%) vs. Q4 2024
- Total value
- $256.7M
- −$2.75M (−1.1%) vs. Q4 2024
- New holders
- 13
- 14 more added
- Sold out
- 10
- 20 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Zenas BioPharma, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sr One Capital Management, LP | 4,911,539 | $38.8M | 9.97% | 00.0% | Unchanged |
| Enavate Sciences GP, LLC | 3,761,359 | $29.7M | 22.39% | 00.0% | Unchanged |
| FMR LLC | 2,852,371 | $22.5M | 0.00% | +1,070,656+60.1% | Added |
| NEA Management Company, LLC | 2,613,948 | $20.7M | 1.59% | 00.0% | Unchanged |
| Novo Holdings A/S | 2,214,967 | $17.5M | 1.33% | +614,967+38.4% | Added |
| Fairmount Funds Management LLC | 1,892,806 | $15.0M | 2.32% | 00.0% | Unchanged |
| NVP Associates, LLC | 1,838,482 | $14.5M | 12.95% | 00.0% | Unchanged |
| Deerfield Management Company, L.P. (Series C) | 1,562,942 | $12.3M | 0.24% | 00.0% | Unchanged |
| Vivo Capital, LLC | 1,183,260 | $9.35M | 1.24% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 1,158,000 | $9.15M | 0.02% | 00.0% | Unchanged |
| ArrowMark Colorado Holdings LLC | 1,097,369 | $8.67M | 0.14% | +469,700+74.8% | Added |
| BlackRock, Inc. | 1,014,110 | $8.01M | 0.00% | +7,552+0.8% | Added |
| Vanguard Group Inc | 975,906 | $7.71M | 0.00% | −3,417−0.3% | Reduced |
| Rock Springs Capital Management LP | 878,667 | $6.94M | 0.40% | 00.0% | Unchanged |
| Wellington Management Group LLP | 873,623 | $6.90M | 0.00% | −261,666−23.0% | Reduced |
| Pivotal bioVenture Partners Investment Advisor LLC | 736,645 | $5.82M | 4.71% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 517,606 | $4.09M | 0.00% | +6,386+1.2% | Added |
| Eversept Partners, LP | 445,588 | $3.52M | 0.40% | +273,485+158.9% | Added |
| Geode Capital Management, LLC | 357,156 | $2.82M | 0.00% | +8,396+2.4% | Added |
| Catalio Capital Management, LP | 295,148 | $2.33M | 0.58% | +107,964+57.7% | Added |
| State Street Corp | 266,200 | $2.10M | 0.00% | +54,694+25.9% | Added |
| Schroder Investment Management Group | 164,035 | $1.34M | 0.00% | −7,905−4.6% | Reduced |
| Northern Trust Corp | 120,238 | $949.9K | 0.00% | −4,008−3.2% | Reduced |
| Charles Schwab Investment Management Inc | 116,140 | $917.5K | 0.00% | −2,520−2.1% | Reduced |
| Superstring Capital Management LP | 111,605 | $881.7K | 1.05% | 00.0% | Unchanged |
| Morgan Stanley | 77,910 | $615.5K | 0.00% | −280,302−78.3% | Reduced |
| Jefferies Financial Group Inc. | 44,067 | $348.1K | 0.01% | +44,067 | New |
| Bank of New York Mellon Corp | 35,188 | $278.0K | 0.00% | −756−2.1% | Reduced |
| Gsa Capital Partners LLP | 31,757 | $251.0K | 0.02% | −24,282−43.3% | Reduced |
| Nuveen, LLC | 31,626 | $249.8K | 0.00% | +31,626 | New |
| Alps Advisors Inc | 28,132 | $222.2K | 0.00% | −5,658−16.7% | Reduced |
| BNP Paribas Arbitrage, SA | 25,298 | $199.9K | 0.00% | +7,053+38.7% | Added |
| Goldman Sachs Group Inc | 23,957 | $189.3K | 0.00% | −18,217−43.2% | Reduced |
| Deutsche Bank AG | 22,990 | $181.6K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 20,765 | $164.0K | 0.00% | −110,900−84.2% | Reduced |
| Susquehanna International Group, LLP | 18,637 | $147.2K | 0.00% | +18,637 | New |
| Birchview Capital, LP | 16,500 | $130.3K | 0.11% | 00.0% | Unchanged |
| Barclays PLC | 16,160 | $127.7K | 0.00% | −7,779−32.5% | Reduced |
| SEI Investments Co | 11,956 | $94.5K | 0.00% | +11,956 | New |
| Intech Investment Management LLC | 11,599 | $91.6K | 0.00% | +11,599 | New |
| Rhumbline Advisers | 11,514 | $91.0K | 0.00% | −27,428−70.4% | Reduced |
| Stoneridge Investment Partners LLC | 10,955 | $87.0K | 0.07% | 00.0% | Unchanged |
| Citigroup Inc | 10,810 | $85.4K | 0.00% | −1,294−10.7% | Reduced |
| Bank of America Corp | 10,579 | $83.6K | 0.00% | −10,996−51.0% | Reduced |
| MetLife Investment Management | 10,087 | $79.7K | 0.00% | −138−1.3% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 8,986 | $71.0K | 0.00% | +390+4.5% | Added |
| Wells Fargo & Company | 8,163 | $64.5K | 0.00% | +181+2.3% | Added |
| Corebridge Financial, Inc. | 7,529 | $59.5K | 0.00% | −111−1.5% | Reduced |
| JPMorgan Chase & Co | 7,267 | $57.4K | 0.00% | −22,572−75.6% | Reduced |
| The PNC Financial Services Group, Inc. | 6,500 | $51.4K | 0.00% | +83+1.3% | Added |
| New York State Common Retirement Fund | 6,200 | $49.0K | 0.00% | +6,200 | New |
| Police & Firemen's Retirement System of New Jersey | 4,499 | $35.5K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 2,800 | $22.1K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 1,608 | $12.7K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 1,519 | $12.0K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,411 | $11.1K | 0.00% | +294+26.3% | Added |
| California State Teachers Retirement System | 1,144 | $9.04K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 454 | $4.00K | 0.00% | −686−60.2% | Reduced |
| Amalgamated Bank | 524 | $4.00K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 476 | $4.00K | 0.00% | +476 | New |
| US Bancorp | 273 | $2.16K | 0.00% | +273 | New |
| Sterling Capital Management LLC | 131 | $1.03K | 0.00% | −95−42.0% | Reduced |
| Signaturefd, LLC | 128 | $1.01K | 0.00% | +128 | New |
| GAMMA Investing LLC | 41 | $324 | 0.00% | +41 | New |
| Nisa Investment Advisors, LLC | 28 | $221 | 0.00% | +28 | New |
| True Wealth Design, LLC | 3 | $24 | 0.00% | +3 | New |
| EverSource Wealth Advisors, LLC | 2 | $16 | 0.00% | +2 | New |
| Perceptive Advisors LLC | 0 | $0 | 0.00% | −744,035−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −134,896−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −82,624−100.0% | Sold out |
| Norges Bank | 0 | $0 | 0.00% | −66,202−100.0% | Sold out |
| M&T Bank Corp | 0 | $0 | 0.00% | −62,622−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −38,400−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −17,045−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −210−100.0% | Sold out |
| MRP Capital Investments, LLC | 0 | $0 | 0.00% | −35−100.0% | Sold out |
| SBI Securities Co., Ltd. | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |