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, Q4 2025
Institutional positions in Zenas BioPharma, Inc. as of Dec 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
- 119
- +39 vs. Q3 2025
- Shares held
- 42.8M
- +8.00M (+23.0%) vs. Q3 2025
- Total value
- $1.55B
- +$776.2M (+100.2%) vs. Q3 2025
- New holders
- 47
- 37 more added
- Sold out
- 8
- 24 more reduced
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Zenas BioPharma, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rothschild Investment LLC | 1 | $36 | 0.00% | +1 | New |
| Keating Financial Advisory Services, Inc. | 1 | $36 | 0.00% | +1 | New |
| Clearstead Advisors, LLC | 1 | $37 | 0.00% | −22−95.7% | Reduced |
| Advisor Group Holdings, Inc. | 3 | $109 | 0.00% | −101−97.1% | Reduced |
| True Wealth Design, LLC | 3 | $109 | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 3 | $109 | 0.00% | +1+50.0% | Added |
| SRS Capital Advisors, Inc. | 4 | $145 | 0.00% | −111−96.5% | Reduced |
| SageView Advisory Group, LLC | 4 | $146 | 0.00% | +4 | New |
| MAI Capital Management | 7 | $255 | 0.00% | +7 | New |
| SJS Investment Consulting Inc. | 7 | $255 | 0.00% | +7 | New |
| Global Retirement Partners, LLC | 11 | $399 | 0.00% | −4−26.7% | Reduced |
| Sunbelt Securities, Inc. | 11 | $399 | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 12 | $436 | 0.00% | +12 | New |
| Larson Financial Group LLC | 19 | $690 | 0.00% | +19 | New |
| Cornerstone Financial Management LLC | 26 | $944 | 0.00% | +26 | New |
| Aster Capital Management (DIFC) Ltd | 42 | $1.52K | 0.00% | −297−87.6% | Reduced |
| Allworth Financial LP | 47 | $1.71K | 0.00% | +47 | New |
| UMA Financial Services, Inc. | 67 | $2.43K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 73 | $2.65K | 0.00% | +15+25.9% | Added |
| Farther Finance Advisors, LLC | 86 | $3.12K | 0.00% | +62+258.3% | Added |
| J.Safra Asset Management Corp | 92 | $3.34K | 0.00% | +92 | New |
| Torren Management, LLC | 95 | $3.45K | 0.00% | +95 | New |
| Nisa Investment Advisors, LLC | 115 | $4.18K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 179 | $6.00K | 0.00% | +179 | New |
| GAMMA Investing LLC | 179 | $6.50K | 0.00% | −4−2.2% | Reduced |
| Signaturefd, LLC | 389 | $14.1K | 0.00% | +57+17.2% | Added |
| Royal Bank of Canada | 544 | $20.0K | 0.00% | −11,337−95.4% | Reduced |
| Amalgamated Bank | 593 | $22.0K | 0.00% | +69+13.2% | Added |
| Tower Research Capital LLC (TRC) | 795 | $28.9K | 0.00% | −593−42.7% | Reduced |
| US Bancorp | 884 | $32.1K | 0.00% | −69−7.2% | Reduced |
| GF Fund Management Co. Ltd. | 1,054 | $38.3K | 0.00% | +1,054 | New |
| Sterling Capital Management LLC | 1,087 | $39.5K | 0.00% | −34−3.0% | Reduced |
| Russell Investments Group, Ltd. | 1,345 | $48.8K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 1,368 | $49.7K | 0.00% | −240−14.9% | Reduced |
| Simplex Trading, LLC | 1,974 | $71.7K | 0.00% | +1,974 | New |
| CWM, LLC | 2,178 | $79.0K | 0.00% | +709+48.3% | Added |
| Citigroup Inc | 2,351 | $85.4K | 0.00% | +2,163+1,150.5% | Added |
| Mirae Asset Global Investments Co., Ltd. | 2,608 | $94.7K | 0.00% | +2,608 | New |
| STRS Ohio | 2,800 | $101.7K | 0.00% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 3,400 | $123.5K | 0.00% | +3,400 | New |
| Police & Firemen's Retirement System of New Jersey | 4,499 | $163.4K | 0.00% | 00.0% | Unchanged |
| ProShare Advisors LLC | 5,820 | $211.3K | 0.00% | +5,820 | New |
| The PNC Financial Services Group, Inc. | 5,824 | $211.5K | 0.00% | −19−0.3% | Reduced |
| Brevan Howard Capital Management LP | 6,173 | $224.1K | 0.00% | +6,173 | New |
| New York State Common Retirement Fund | 6,200 | $225.1K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 6,256 | $227.2K | 0.00% | +6,256 | New |
| Virtus Investment Advisers, Inc. | 6,554 | $238.0K | 0.06% | +6,554 | New |
| Marshall Wace, LLP | 7,100 | $257.8K | 0.00% | +7,100 | New |
| BNP Paribas Arbitrage, SA | 7,138 | $259.2K | 0.00% | +3,992+126.9% | Added |
| VARCOV Co. | 7,335 | $266.3K | 0.11% | +7,335 | New |
| Mariner, LLC | 7,676 | $278.7K | 0.00% | +7,676 | New |
| Janus Henderson Group PLC | 7,900 | $286.6K | 0.00% | +7,900 | New |
| UBS Asset Management Americas Inc | 8,400 | $305.0K | 0.00% | +8,400 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 8,780 | $318.8K | 0.00% | +1,319+17.7% | Added |
| Intech Investment Management LLC | 8,863 | $321.8K | 0.00% | +8,863 | New |
| Gsa Capital Partners LLP | 8,956 | $325.0K | 0.03% | +8,956 | New |
| Schonfeld Strategic Advisors LLC | 9,127 | $331.4K | 0.00% | +9,127 | New |
| MetLife Investment Management | 10,100 | $366.7K | 0.00% | 00.0% | Unchanged |
| Voleon Capital Management LP | 10,187 | $369.9K | 0.01% | +10,187 | New |
| State of Wisconsin Investment Board | 10,221 | $371.1K | 0.00% | +10,221 | New |
| Los Angeles Capital Management LLC | 14,447 | $431.7K | 0.00% | +14,447 | New |
| XTX Topco Ltd | 12,183 | $442.4K | 0.01% | +12,183 | New |
| Creative Planning | 12,273 | $445.6K | 0.00% | +391+3.3% | Added |
| Deutsche Bank AG | 12,781 | $464.1K | 0.00% | +554+4.5% | Added |
| Legal & General Group Plc | 13,027 | $473.0K | 0.00% | +11,673+862.1% | Added |
| China Universal Asset Management Co., Ltd. | 13,314 | $483.4K | 0.04% | +13,314 | New |
| Susquehanna International Group, LLP | 13,678 | $496.6K | 0.00% | +13,678 | New |
| Voya Investment Management LLC | 14,725 | $534.7K | 0.00% | +14,725 | New |
| Two Sigma Investments, LP | 15,100 | $548.3K | 0.00% | −5,282−25.9% | Reduced |
| Squarepoint Ops LLC | 15,541 | $564.3K | 0.00% | +15,541 | New |
| California State Teachers Retirement System | 15,701 | $570.1K | 0.00% | +14,556+1,271.3% | Added |
| Alliancebernstein L.P. | 18,350 | $666.3K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 21,151 | $768.0K | 0.00% | +8,696+69.8% | Added |
| JPMorgan Chase & Co | 21,726 | $788.9K | 0.00% | +15,178+231.8% | Added |
| Rhumbline Advisers | 21,946 | $796.9K | 0.00% | +732+3.5% | Added |
| Citadel Advisors LLC | 24,459 | $888.1K | 0.00% | +24,459 | New |
| Swiss National Bank | 31,600 | $1.15M | 0.00% | +31,600 | New |
| Barclays PLC | 34,377 | $1.25M | 0.00% | +11,501+50.3% | Added |
| Alps Advisors Inc | 44,077 | $1.60M | 0.01% | +24,035+119.9% | Added |
| Bank of America Corp | 47,160 | $1.71M | 0.00% | +32,351+218.5% | Added |
| Millennium Management LLC | 49,160 | $1.78M | 0.00% | −22,690−31.6% | Reduced |
| Nuveen, LLC | 50,850 | $1.85M | 0.00% | +30,331+147.8% | Added |
| Schroder Investment Management Group | 50,636 | $1.85M | 0.00% | −61,976−55.0% | Reduced |
| Bank of New York Mellon Corp | 51,802 | $1.88M | 0.00% | +10,114+24.3% | Added |
| UBS Group AG | 69,495 | $2.52M | 0.00% | +34,003+95.8% | Added |
| AQR Capital Management LLC | 78,220 | $2.84M | 0.00% | +53,636+218.2% | Added |
| Superstring Capital Management LP | 83,353 | $3.03M | 1.62% | −13,312−13.8% | Reduced |
| Eversept Partners, LP | 121,016 | $4.39M | 0.25% | −37,726−23.8% | Reduced |
| Morgan Stanley | 128,335 | $4.66M | 0.00% | +39,602+44.6% | Added |
| Goldman Sachs Group Inc | 130,698 | $4.75M | 0.00% | +130,698 | New |
| Voloridge Investment Management, LLC | 133,439 | $4.85M | 0.02% | +133,439 | New |
| Northern Trust Corp | 155,366 | $5.64M | 0.00% | +22,088+16.6% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 163,860 | $5.95M | 0.02% | +163,860 | New |
| Invesco Ltd. | 187,968 | $6.83M | 0.00% | +42,172+28.9% | Added |
| Balyasny Asset Management LLC | 193,153 | $7.01M | 0.01% | +193,153 | New |
| Charles Schwab Investment Management Inc | 213,193 | $7.74M | 0.00% | +34,797+19.5% | Added |
| Point72 Asset Management, L.P. | 368,400 | $9.21M | 0.01% | +368,400 | New |
| NEXTBio Capital Management LP | 321,983 | $11.7M | 6.86% | +321,983 | New |
| Price T Rowe Associates Inc | 369,248 | $13.4M | 0.00% | −5,050−1.3% | Reduced |
| State Street Corp | 438,294 | $15.9M | 0.00% | +60,809+16.1% | Added |