Zenas BioPharma, Inc. (ZBIO) — Institutional Holders, Q2 2026
144 institutional investment managers reported a ZBIO position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $1.5B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
ZBIO in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- PRICE T ROWE ASSOCIATESAdded · +869,662 sh+$22.1M
- BANK OF AMERICAAdded · +842,812 sh+$21.4M
- BlackRockAdded · +648,677 sh+$16.5M
- STATE STREETAdded · +584,177 sh+$14.8M
- TWO SIGMA INVESTMENTSAdded · +540,094 sh+$13.7M
Biggest sellers
- SILVERARC CAPITAL MANAGEMENTTrimmed · -626,146 sh-$15.9M
- GREAT POINT PARTNERSSold out · -524,066 sh-$13.3M
- LEUCADIA NATIONALSold out · -219,947 sh-$5.6M
- UBS Group AGTrimmed · -189,316 sh-$4.8M
- MARSHALL WACE, LLPTrimmed · -178,486 sh-$4.5M
ZBIO 13F holders ranked 1–100 of 144
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | FMR#1 · 9,506,701 sh | 9,506,701 | $241.3M | 0.01% | +4.7% |
| 2 | SR ONE CAPITAL MANAGEMENT#2 · 5,037,854 sh | 5,037,854 | $127.9M | 12.31% | 0.0% |
| 3 | NEA Management Company#3 · 4,023,219 sh | 4,023,219 | $102.1M | 6.43% | 0.0% |
| 4 | Enavate Sciences GP#4 · 3,919,159 sh | 3,919,159 | $99.5M | 28.80% | 0.0% |
| 5 | FEDERATED HERMES#5 · 3,116,805 sh | 3,116,805 | $79.1M | 0.11% | -0.3% |
| 6 | BlackRock#6 · 2,686,225 sh | 2,686,225 | $68.2M | <0.01% | +31.8% |
| 7 | Capital International Investors#7 · 2,502,912 sh | 2,502,912 | $63.5M | 0.01% | +2.8% |
| 8 | Polar Capital Plc#8 · 2,412,772 sh | 2,412,772 | $61.2M | 0.14% | -5.3% |
| 9 | Fairmount Funds Management#9 · 2,359,025 sh | 2,359,025 | $59.9M | 3.96% | 0.0% |
| 10 | STATE STREET#10 · 2,055,100 sh | 2,055,100 | $52.2M | <0.01% | +39.7% |
| 11 | NVP Associates#11 · 1,838,482 sh | 1,838,482 | $46.7M | 14.22% | 0.0% |
| 12 | WELLINGTON MANAGEMENT GROUP LLP#12 · 1,593,819 sh | 1,593,819 | $40.5M | <0.01% | +27.9% |
| 13 | VANGUARD CAPITAL MANAGEMENT#13 · 1,354,864 sh | 1,354,864 | $34.4M | <0.01% | +8.8% |
| 14 | BANK OF AMERICA#14 · 1,231,159 sh | 1,231,159 | $31.2M | <0.01% | +217.0% |
| 15 | PRICE T ROWE ASSOCIATES#15 · 1,226,928 sh | 1,226,928 | $31.1M | <0.01% | +243.4% |
| 16 | GEODE CAPITAL MANAGEMENT#16 · 882,654 sh | 882,654 | $22.4M | <0.01% | +34.6% |
| 17 | ALLIANCEBERNSTEIN L.P.#17 · 1,103,388 sh | 1,103,388 | $21.6M | <0.01% | +23.0% |
| 18 | TWO SIGMA INVESTMENTS#18 · 815,150 sh | 815,150 | $20.7M | 0.01% | +196.4% |
| 19 | EcoR1 Capital#19 · 789,500 sh | 789,500 | $20.0M | 0.97% | 0.0% |
| 20 | MILLENNIUM MANAGEMENT#20 · 660,470 sh | 660,470 | $16.8M | <0.01% | +38.5% |
| 21 | Woodline Partners#21 · 590,539 sh | 590,539 | $15.0M | 0.05% | 0.0% |
| 22 | BALYASNY ASSET MANAGEMENT L.P.#22 · 576,717 sh | 576,717 | $14.6M | 0.02% | -13.5% |
| 23 | ArrowMark Colorado#23 · 573,318 sh | 573,318 | $14.6M | 0.61% | -13.0% |
| 24 | SILVERARC CAPITAL MANAGEMENT#24 · 509,789 sh | 509,789 | $12.9M | 1.34% | -55.1% |
| 25 | Rock Springs Capital Management#25 · 502,077 sh | 502,077 | $12.7M | 0.62% | 0.0% |
| 26 | Pivotal bioVenture Partners Investment Advisor#26 · 490,766 sh | 490,766 | $12.5M | 4.05% | -17.1% |
| 27 | NEXTBio Capital Management#27 · 426,736 sh | 426,736 | $10.8M | 4.98% | 0.0% |
| 28 | Vestal Point Capital#28 · 365,000 sh | 365,000 | $9.3M | 0.22% | +82.5% |
| 29 | MARSHALL WACE, LLP#29 · 323,442 sh | 323,442 | $8.2M | <0.01% | -35.6% |
| 30 | JENNISON ASSOCIATES#30 · 314,049 sh | 314,049 | $8.0M | <0.01% | +25.6% |
| 31 | VANGUARD PORTFOLIO MANAGEMENT#31 · 304,870 sh | 304,870 | $7.7M | <0.01% | +21.3% |
| 32 | CHARLES SCHWAB INVESTMENT MANAGEMENT#32 · 302,085 sh | 302,085 | $7.7M | <0.01% | +34.6% |
| 33 | NORTHERN#33 · 281,140 sh | 281,140 | $7.1M | <0.01% | +44.4% |
| 34 | GOLDMAN SACHS GROUP#34 · 271,163 sh | 271,163 | $6.9M | <0.01% | -28.9% |
| 35 | VANGUARD FIDUCIARY#35 · 254,623 sh | 254,623 | $6.5M | <0.01% | +41.9% |
| 36 | SPHERA FUNDS MANAGEMENT LTD.#36 · 230,834 sh | 230,834 | $5.9M | 0.76% | +7.7% |
| 37 | iA Global Asset Management#37 · 215,130 sh | 215,130 | $5.5M | 0.06% | -0.3% |
| 38 | Walleye Capital#38 · 209,050 sh | 209,050 | $5.3M | 0.02% | +66.9% |
| 39 | Sio Capital Management#39 · 208,557 sh | 208,557 | $5.3M | 0.88% | -37.1% |
| 40 | CITADEL ADVISORS#40 · 195,780 sh | 195,780 | $5.0M | <0.01% | +192.8% |
| 41 | UBS Group AG#41 · 178,089 sh | 178,089 | $4.5M | <0.01% | -51.5% |
| 42 | Voleon Capital Management#42 · 167,145 sh | 167,145 | $4.2M | 0.08% | +464.5% |
| 43 | BNP PARIBAS FINANCIAL MARKETS#43 · 151,086 sh | 151,086 | $3.8M | <0.01% | +1411.0% |
| 44 | MORGAN STANLEY#44 · 134,979 sh | 134,979 | $3.4M | <0.01% | +44.5% |
| 45 | Squarepoint Ops#45 · 125,185 sh | 125,185 | $3.2M | <0.01% | +192.0% |
| 46 | BARCLAYS PLC#46 · 115,965 sh | 115,965 | $2.9M | <0.01% | +291.6% |
| 47 | SEVEN GRAND MANAGERS#47 · 100,000 sh | 100,000 | $2.5M | 0.10% | 0.0% |
| 48 | Birchview Capital#48 · 93,601 sh | 93,601 | $2.4M | 1.11% | +33.7% |
| 49 | Verition Fund Management#49 · 72,988 sh | 72,988 | $1.9M | <0.01% | New |
| 50 | Bank of New York Mellon#50 · 70,477 sh | 70,477 | $1.8M | <0.01% | +15.8% |
| 51 | J. Goldman#51 · 68,232 sh | 68,232 | $1.7M | 0.04% | +85.4% |
| 52 | CSM Advisors#52 · 67,622 sh | 67,622 | $1.7M | 0.04% | New |
| 53 | Nuveen#53 · 66,638 sh | 66,638 | $1.7M | <0.01% | -1.7% |
| 54 | ALPS ADVISORS#54 · 63,675 sh | 63,675 | $1.6M | <0.01% | +45.7% |
| 55 | Swiss National Bank#55 · 53,200 sh | 53,200 | $1.4M | <0.01% | +68.4% |
| 56 | Exome Asset Management#56 · 52,443 sh | 52,443 | $1.3M | 0.82% | -35.0% |
| 57 | Jump Financial#57 · 51,022 sh | 51,022 | $1.3M | 0.01% | -15.0% |
| 58 | CITIGROUP#58 · 49,521 sh | 49,521 | $1.3M | <0.01% | +400.8% |
| 59 | LOS ANGELES CAPITAL MANAGEMENT#59 · 48,465 sh | 48,465 | $1.2M | <0.01% | New |
| 60 | XTX Topco Ltd#60 · 40,034 sh | 40,034 | $1.0M | 0.01% | +107.3% |
| 61 | Burkehill Global Management#61 · 40,000 sh | 40,000 | $1.0M | 0.04% | 0.0% |
| 62 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#62 · 37,790 sh | 37,790 | $959.1K | <0.01% | +143.4% |
| 63 | Rafferty Asset Management#63 · 37,509 sh | 37,509 | $952.0K | <0.01% | -22.1% |
| 64 | Atom Investors#64 · 37,149 sh | 37,149 | $942.8K | 0.08% | -65.3% |
| 65 | RHUMBLINE ADVISERS#65 · 34,245 sh | 34,245 | $869.1K | <0.01% | +27.7% |
| 66 | BOOTHBAY FUND MANAGEMENT#66 · 33,280 sh | 33,280 | $844.6K | 0.01% | New |
| 67 | AQR CAPITAL MANAGEMENT#67 · 31,100 sh | 31,100 | $789.3K | <0.01% | -39.0% |
| 68 | DEUTSCHE BANK AG\#68 · 28,881 sh | 28,881 | $733.0K | <0.01% | +49.9% |
| 69 | DCF Advisers#69 · 28,184 sh | 28,184 | $715.3K | 0.13% | New |
| 70 | STATE OF WISCONSIN INVESTMENT BOARD#70 · 26,922 sh | 26,922 | $683.3K | <0.01% | +29.3% |
| 71 | JPMORGAN CHASE#71 · 24,445 sh | 24,445 | $660.5K | 0.00% | -2.6% |
| 72 | WELLS FARGO & COMPANY#72 · 25,995 sh | 25,995 | $659.8K | <0.01% | +192.6% |
| 73 | VANGUARD ASSET MANAGEMENT, Ltd#73 · 20,623 sh | 20,623 | $523.4K | <0.01% | +93.8% |
| 74 | Legal & General Group Plc#74 · 20,023 sh | 20,023 | $508.2K | <0.01% | +91.9% |
| 75 | Invesco Ltd.#75 · 18,954 sh | 18,954 | $481.1K | 0.00% | -83.3% |
| 76 | China Universal Asset Management , Ltd.#76 · 18,848 sh | 18,848 | $478.4K | 0.03% | +39.3% |
| 77 | PROFUND ADVISORS#77 · 18,838 sh | 18,838 | $478.1K | 0.01% | -12.0% |
| 78 | ALLSTATE#78 · 18,241 sh | 18,241 | $463.0K | <0.01% | +0.1% |
| 79 | MIRAE ASSET GLOBAL ETFS Ltd.#79 · 17,423 sh | 17,423 | $442.9K | <0.01% | +21.1% |
| 80 | Y-Intercept (Hong Kong) Ltd#80 · 17,332 sh | 17,332 | $439.9K | — | New |
| 81 | MetLife Investment Management#81 · 17,041 sh | 17,041 | $432.5K | <0.01% | +32.0% |
| 82 | Virtus Investment Advisers#82 · 16,525 sh | 16,525 | $419.4K | 0.10% | +146.0% |
| 83 | Point72 Asset Management, L.P.#83 · 16,136 sh | 16,136 | $409.5K | <0.01% | New |
| 84 | Vanguard Global Advisers#84 · 15,332 sh | 15,332 | $389.1K | <0.01% | -26.4% |
| 85 | NORDEA INVESTMENT MANAGEMENT AB#85 · 15,050 sh | 15,050 | $382.9K | <0.01% | New |
| 86 | Brevan Howard Capital Management#86 · 14,674 sh | 14,674 | $372.4K | <0.01% | New |
| 87 | Engineers Gate Manager#87 · 12,980 sh | 12,980 | $329.4K | <0.01% | New |
| 88 | Russell Investments Group, Ltd.#88 · 12,740 sh | 12,740 | $323.3K | <0.01% | +368.2% |
| 89 | Creative Planning#89 · 11,723 sh | 11,723 | $297.5K | <0.01% | -7.4% |
| 90 | VARCOV#90 · 10,505 sh | 10,505 | $266.6K | 0.10% | New |
| 91 | NEW YORK STATE COMMON RETIREMENT FUND#91 · 10,300 sh | 10,300 | $261.4K | <0.01% | +66.1% |
| 92 | MASSACHUSETTS FINANCIAL SERVICES#92 · 9,053 sh | 9,053 | $229.8K | <0.01% | New |
| 93 | Scientech Research#93 · 9,028 sh | 9,028 | $229.1K | 0.19% | -30.3% |
| 94 | DIMENSIONAL FUND ADVISORS#94 · 8,874 sh | 8,874 | $225.2K | 0.00% | New |
| 95 | HRT FINANCIAL#95 · 8,879 sh | 8,879 | $225.0K | <0.01% | -65.5% |
| 96 | Quantinno Capital Management#96 · 8,581 sh | 8,581 | $217.8K | <0.01% | -59.4% |
| 97 | State of New Jersey Common Pension Fund D#97 · 8,571 sh | 8,571 | $217.5K | <0.01% | New |
| 98 | SG Americas Securities#98 · 8,442 sh | 8,442 | $214.0K | <0.01% | New |
| 99 | Police & Firemen's Retirement System of New Jersey#99 · 8,418 sh | 8,418 | $213.6K | <0.01% | +32.3% |
| 100 | MANUFACTURERS LIFE INSURANCE COMPANY, THE#100 · 8,032 sh | 8,032 | $203.9K | <0.01% | New |
Funds that sold out of ZBIO in Q2 2026 (22)
Held ZBIO at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| GREAT POINT PARTNERS524,066 sh | 524,066 | $10.2M |
| LEUCADIA NATIONAL219,947 sh | 219,947 | $4.3M |
| SEB Asset Management AB163,860 sh | 163,860 | $3.2M |
| Monashee Investment Management150,000 sh | 150,000 | $2.9M |
| Maven Securities LTD150,000 sh | 150,000 | $2.9M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP85,005 sh | 85,005 | $1.7M |
| VOLORIDGE INVESTMENT MANAGEMENT77,493 sh | 77,493 | $1.5M |
| DAFNA Capital Management42,500 sh | 42,500 | $830.9K |
| SCHRODER INVESTMENT MANAGEMENT GROUP33,697 sh | 33,697 | $614.1K |
| JACOBS LEVY EQUITY MANAGEMENT27,532 sh | 27,532 | $538.3K |
| Aquatic Capital Management18,640 sh | 18,640 | $364.4K |
| Schonfeld Strategic Advisors17,638 sh | 17,638 | $344.8K |
| Corient Private Wealth16,845 sh | 16,845 | $329.3K |
| PRELUDE CAPITAL MANAGEMENT16,645 sh | 16,645 | $325.4K |
| FOX RUN MANAGEMENT, L.L.C.13,331 sh | 13,331 | $243.0K |
| SEI INVESTMENTS12,386 sh | 12,386 | $242.1K |
| STRS OHIO2,800 sh | 2,800 | $54.7K |
| FIFTH THIRD BANCORP107 sh | 107 | $2.1K |
| SBI Securities , Ltd.20 sh | 20 | $391.00 |
| MAI Capital Management12 sh | 12 | $235.00 |
| Stone House Investment Management5 sh | 5 | $98.00 |
| True Wealth Design3 sh | 3 | $59.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.