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Disclosery

ZBIO ZENAS BIOPHARMA INC

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Stock (common), issuer CIK 1953926

132 managers (140 13F filers) reported a position in ZBIO shares at 2026-03-31, 57,784,852 shares in all. 44 filers opened a position and 28 filers sold out during the quarter.

Managers
132
13F filers
140
New
44
Added
58
Reduced
17
Sold out
28
Shares held by filers
57,784,852

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
FMR LLCin group FMR LLC9,082,000$178M0.01%+1,377,74513F-HRTimelineGroup
SR One Capital Management, LP5,037,854$98.5M10.76%013F-HRTimeline
NEA Management Company, LLC4,023,219$78.7M4.47%+500,00013F-HRTimeline
ENAVATE SCIENCES GP, LLC3,919,159$76.6M21.8%013F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.3,127,031$61.1M0.1%+411,45313F-HRTimelineGroup
Polar Capital Holdings Plcin group Polar Capital Holdings Plc2,548,444$49.8M0.22%+1,490,83513F-HRTimelineGroup
Capital International Investorsin group Capital International Investo…2,434,000$47.6M0.01%new13F-HRTimelineGroup
Royalty Pharma Sub-Manager, LLCin group Royalty Pharma Sub-Manager, L…2,388,150$46.7M27.02%+1,125,00013F-HR/ATimelineGroup
Fairmount Funds Management LLCin group Fairmount Funds Management LLC2,359,025$46.1M3.33%+150,00013F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.2,037,548$39.8M<0.01%+270,03013F-HRTimelineGroup
NVP ASSOCIATES, LLC1,838,482$35.9M20.4%013F-HRTimeline
VANGUARD GROUP INCgroup of 6 filers holding1,711,870$33.5MnewTimeline
ALLIANCEBERNSTEIN L.P.897,321$32.6M0.01%+878,97113F-HRTimeline
STATE STREET CORPin group STATE STREET CORP1,470,923$28.8M<0.01%+1,032,62913F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…1,246,053$24.4M<0.01%+390,71913F-HRTimelineGroup
SILVERARC CAPITAL MANAGEMENT, LLCin group SILVERARC CAPITAL MANAGEMENT,…1,135,935$22.2M2.62%new13F-HRTimelineGroup
EcoR1 Capital, LLC789,500$15.4M0.66%013F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management667,070$13M0.03%+473,91713F-HRTimelineGroup
ArrowMark Colorado Holdings LLC658,909$12.9M0.34%-92,25213F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC655,785$12.8M<0.01%+67,39213F-HRTimelineGroup
Pivotal bioVenture Partners Investment …in group Pivotal bioVenture Partners I…591,991$11.6M4.14%013F-HRTimelineGroup
Woodline Partners LP590,525$11.5M0.04%new13F-HR/ATimeline
GREAT POINT PARTNERS LLC524,066$10.2M2.51%new13F-HRTimeline
Rock Springs Capital Management LP502,077$9.82M0.58%013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP501,928$9.81M0.01%+494,82813F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC476,818$9.32M0.01%+427,65813F-HRTimelineGroup
NEXTBio Capital Management LP426,736$8.34M3.87%+104,75313F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/388,347$7.59M<0.01%+341,18713F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding382,928$7.49M+305,033Timeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC381,461$7.46M<0.01%+250,76313F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/357,266$6.99M<0.01%-11,98213F-HRTimeline
Sio Capital Management, LLC331,730$6.49M0.93%new13F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP275,056$5.38M<0.01%+259,95613F-HRTimelineGroup
JENNISON ASSOCIATES LLC250,000$4.89M<0.01%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co224,402$4.39M<0.01%+11,20913F-HRTimelineGroup
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.219,947$4.3M0.05%new13F-HRTimelineGroup
iA Global Asset Management Inc.215,830$4.22M0.06%new13F-HRTimeline
SPHERA FUNDS MANAGEMENT LTD.in group SPHERA FUNDS MANAGEMENT LTD.214,334$4.19M0.72%new13F-HRTimelineGroup
Vestal Point Capital, LP200,000$3.91M0.11%new13F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP194,640$3.81M<0.01%+39,27413F-HRTimelineGroup
SEB Asset Management AB163,860$3.2M0.01%13F-HRTimeline
Monashee Investment Management LLC150,000$2.93M1.6%new13F-HRTimeline
Maven Securities LTDin group Maven Securities LTD150,000$2.93M0.17%new13F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC125,232$2.45M0.02%new13F-HR/ATimelineGroup
Invesco Ltd.in group Invesco Ltd.113,479$2.22M<0.01%-74,48913F-HRTimelineGroup
Atom Investors LP107,016$2.09M0.15%new13F-HRTimeline
SEVEN GRAND MANAGERS, LLC100,000$1.96M0.13%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY93,396$1.83M<0.01%-34,93913F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…85,005$1.66M<0.01%+71,32713F-HRTimelineGroup
Exome Asset Management LLC80,730$1.58M0.93%new13F-HRTimeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC77,493$1.51M0.01%-55,94613F-HRTimeline
Birchview Capital, LP70,000$1.37M0.78%new13F-HRTimeline
Nuveen, LLCin group TIAA67,770$1.32M<0.01%+16,92013F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC66,870$1.31M<0.01%+42,41113F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp60,864$1.19M<0.01%+9,06213F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC60,001$1.17M0.02%new13F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC50,971$996K<0.01%-27,24913F-HRTimelineGroup
Rafferty Asset Management, LLC48,169$942K<0.01%new13F-HRTimeline
ALPS ADVISORS INCin group ALPS ADVISORS INC43,694$854K<0.01%-38313F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC42,874$838K<0.01%+27,33313F-HRTimelineGroup
DAFNA Capital Management LLC42,500$831K0.19%new13F-HRTimeline
Burkehill Global Management, LP40,000$782K0.04%new13F-HRTimeline
J. Goldman & Co LP36,797$719K0.03%new13F-HRTimeline
Swiss National Bank31,600$618K<0.01%013F-HRTimeline
SCHRODER INVESTMENT MANAGEMENT GROUP33,697$614K<0.01%-16,93913F-HRTimeline
Voleon Capital Management LP29,612$579K0.01%+19,42513F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC29,610$579K<0.01%-4,76713F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC27,532$538K<0.01%new13F-HRTimeline
RHUMBLINE ADVISERS26,813$524K<0.01%+4,86713F-HRTimeline
HRT FINANCIAL LP25,749$503K<0.01%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO25,109$458K<0.01%+3,38313F-HR/ATimelineGroup
PROFUND ADVISORS LLC21,416$419K0.02%new13F-HRTimeline
Quantinno Capital Management LP21,126$413K<0.01%new13F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD20,814$407K<0.01%+10,59313F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd19,311$378K0.01%+7,12813F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\19,266$377K<0.01%+6,48513F-HRTimelineGroup
Aquatic Capital Management LLC18,640$364K0.01%new13F-HRTimeline
ALLSTATE CORPin group ALLSTATE CORP18,223$356K<0.01%new13F-HRTimelineGroup
Schonfeld Strategic Advisors LLC17,638$345K<0.01%+8,51113F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding17,186$332K+5,798Timeline
Corient Private Wealth LPin group Corient Private Wealth LP16,845$329K<0.01%new13F-HRTimelineGroup
PRELUDE CAPITAL MANAGEMENT, LLC16,645$325K0.02%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…15,819$309K<0.01%+11813F-HRTimeline
China Universal Asset Management Co., L…13,526$264K0.02%+21213F-HRTimeline
Scientech Research LLC12,952$253K0.21%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…12,909$252K<0.01%+2,80913F-HRTimelineGroup
Creative Planningin group Creative Planning12,658$247K<0.01%+38513F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.13,331$243K0.04%new13F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO12,386$242K<0.01%new13F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc10,432$204K<0.01%-2,59513F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS9,999$195K<0.01%+2,86113F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC9,888$193K<0.01%+7,53713F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN8,885$174K<0.01%-12,26613F-HR/ATimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…7,235$141K<0.01%+6,44013F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…6,777$132K<0.01%new13F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…6,717$131K0.04%+16313F-HRTimelineGroup
Police & Firemen's Retirement System of…6,363$124K<0.01%+1,86413F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND6,200$121K<0.01%013F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…4,767$93.2K<0.01%-1,05713F-HRTimelineGroup
KLP KAPITALFORVALTNING AS3,400$66.5K<0.01%013F-HRTimeline
STRS OHIO2,800$54.7K<0.01%013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…2,721$53.2K<0.01%+1,37613F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC2,415$47.2K<0.01%+2,30013F-HRTimeline
Ameritas Investment Partners, Inc.group of 2 filers holding1,930$37.7K+562Timeline
CWM, LLCin group CWM, LLC1,472$28.8K<0.01%-70613F-HRTimelineGroup
HARBOUR INVESTMENTS, INC.1,370$26.8K<0.01%new13F-HRTimeline
GF FUND MANAGEMENT CO. LTD.1,205$23.6K<0.01%+15113F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\994$19.4K<0.01%+11013F-HRTimelineGroup
Sterling Capital Management LLC779$15.2K<0.01%-30813F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.677$13.2K<0.01%+67413F-HRTimelineGroup
SIGNATUREFD, LLC370$7.23K<0.01%-1913F-HRTimeline
GROUP ONE TRADING LLC300$5.87K<0.01%new13F-HRTimeline
Larson Financial Group LLC293$5.73K<0.01%+27413F-HRTimeline
J.Safra Asset Management Corp270$5.28K<0.01%+17813F-HRTimeline
Quantbot Technologies LP256$5K<0.01%new13F-HRTimeline
GAMMA Investing LLC245$4.79K<0.01%+6613F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…107$2.09K<0.01%new13F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…98$1.92K<0.01%+2513F-HR/ATimelineGroup
Torren Management, LLC95$1.86K<0.01%013F-HRTimeline
Physician Wealth Advisors, Inc.92$1.8K<0.01%+2513F-HRTimeline
Caitong International Asset Management …60$1.17K<0.01%new13F-HRTimeline
Allworth Financial LP26$509<0.01%-2113F-HRTimeline
Cornerstone Financial Management LLC26$508<0.01%013F-HR/ATimeline
ROTHSCHILD INVESTMENT LLC21$411<0.01%+2013F-HRTimeline
SBI Securities Co., Ltd.20$391<0.01%new13F-HRTimeline
Bare Financial Services, Inc14$274<0.01%new13F-HRTimeline
MAI Capital Management12$235<0.01%+513F-HRTimeline
Sunbelt Securities, Inc.11$215<0.01%013F-HRTimeline
Stone House Investment Management, LLC5$98<0.01%new13F-HRTimeline
True Wealth Design, LLC3$59<0.01%013F-HRTimeline
Essential Partners LLC2$39<0.01%-113F-HRTimeline
Covestor Ltd6$00%new13F-HRTimelineValue filed as zero, left out of ratios.