13F

Stock

Zenas BioPharma, Inc.

ZBIO · held by 156 managers

Reported value

$1.27B

Holders

156

+61 new · −27 exited

Holders’ est. mark

−$608.9M

Price effect on 88 books still in the name

Largest holder

$177.6M

Fidelity

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Fidelity9.08M$177.6M−$129.1MCut−$102.2M
SR One Capital Management, LP5.04M$98.5M−$84.4MCut−$84.4M
NEA Management Company, LLC4.02M$78.7M−$59MCut−$49.3M
ENAVATE SCIENCES GP, LLC3.92M$76.6M−$65.7MCut−$65.7M
DEERFIELD MANAGEMENT COMPANY, L.P.65M$67.3MNew
FEDERATED HERMES, INC.3.13M$61.1M−$45.5MCut−$37.5M
Polar Capital Holdings Plc2.55M$49.8M−$17.7MAdded$11.4M
Capital International Investors2.43M$47.6MNew
Fairmount Funds Management LLC2.36M$46.1M−$37MCut−$34.1M
BlackRock, Inc.2.04M$39.8M−$29.6MCut−$24.3M
NVP ASSOCIATES, LLC1.84M$35.9M−$30.8MCut−$30.8M
ALLIANCEBERNSTEIN L.P.897.3K$32.6M−$0Added$31.9M
Context Capital Management, LLC29.1M$30.1MNew
State Street1.47M$28.8M−$7.35MAdded$12.8M
WELLINGTON MANAGEMENT GROUP LLP1.25M$24.4M−$14.3MCut−$6.7M
VANGUARD CAPITAL MANAGEMENT LLC1.25M$24.3MHeld
SILVERARC CAPITAL MANAGEMENT, LLC1.14M$22.2MNew
HIGHBRIDGE CAPITAL MANAGEMENT LLC20M$19.8MNew
EcoR1 Capital, LLC789.5K$15.4M−$13.2MCut−$13.2M
Woodline Partners LP3.09M$14.1MNew
BRAIDWELL LP13M$13.5MNew
Balyasny Asset Management L.P.667.1K$13M−$3.24MAdded$6.03M
ArrowMark Colorado Holdings LLC658.9K$12.9M−$11MCut−$14.4M
GEODE CAPITAL MANAGEMENT, LLC655.8K$12.8M−$9.86MCut−$8.55M
Pivotal bioVenture Partners Investment Advisor LLC592K$11.6M−$9.92MCut−$9.92M
MILLENNIUM MANAGEMENT LLC1.68M$10.6M−$1.48MAdded$8.77M
GREAT POINT PARTNERS LLC524.1K$10.2MNew
Jefferies Financial Group Inc.5.77M$10.1MNew
Rock Springs Capital Management LP502.1K$9.82M−$8.41MCut−$8.41M
MARSHALL WACE, LLP501.9K$9.81M−$119KAdded$9.55M
Citadel8.07M$9.6M−$859KAdded$8.71M
JANE STREET GROUP, LLC9.5M$9.52MNew
NEXTBio Capital Management LP426.7K$8.34M−$5.4MCut−$3.35M
Linden Advisors LP7.5M$7.79MNew
BANK OF AMERICA CORP /DE/388.3K$7.59M−$790.4KAdded$5.88M
GOLDMAN SACHS GROUP INC381.5K$7.46M−$2.19MAdded$2.71M
UBS Group AG367.4K$7.18M−$1.16MAdded$4.66M
Sio Capital Management, LLC331.7K$6.49MNew
Monashee Investment Management LLC3.3M$6.14MNew
TWO SIGMA INVESTMENTS, LP275.1K$5.38M−$253.1KAdded$4.83M
VANGUARD PORTFOLIO MANAGEMENT LLC251.4K$4.92MHeld
JENNISON ASSOCIATES LLC250K$4.89MNew
Maven Securities LTD1.65M$4.49MNew
CHARLES SCHWAB INVESTMENT MANAGEMENT INC224.4K$4.39M−$3.57MCut−$3.35M
SPHERA FUNDS MANAGEMENT LTD.214.3K$4.19MNew
Vestal Point Capital, LP200K$3.91MNew
NORTHERN TRUST CORP194.6K$3.81M−$2.6MCut−$1.84M
CAPSTONE INVESTMENT ADVISORS, LLC3.5M$3.62MNew
VANGUARD FIDUCIARY TRUST CO179.4K$3.51MHeld
SEB Asset Management AB163.9K$3.2MHeld
D. E. Shaw & Co., Inc.3M$3.12MNew
Graham Capital Management, L.P.2.5M$2.6MNew
Calamos Advisors LLC2.5M$2.59MNew
Walleye Capital LLC125.2K$2.45MNew
Invesco Ltd.113.5K$2.22M−$1.9MCut−$4.61M
Atom Investors LP107K$2.09MNew
SEVEN GRAND MANAGERS, LLC100K$1.96MNew
MORGAN STANLEY93.4K$1.83M−$1.57MCut−$2.83M
SUSQUEHANNA INTERNATIONAL GROUP, LLP85K$1.66M−$229.2KAdded$1.17M
Exome Asset Management LLC80.7K$1.58MNew
VOLORIDGE INVESTMENT MANAGEMENT, LLC77.5K$1.51M−$1.3MCut−$3.33M
Birchview Capital, LP70K$1.37MNew
Nuveen, LLC67.8K$1.32M−$852.2KCut−$521.5K
Bank of New York Mellon Corp60.9K$1.19M−$868.2KCut−$691K
Jump Financial, LLC60K$1.17MNew
Icahn Capital51K$996.5K−$854.3KCut−$1.84M
Rafferty Asset Management, LLC48.2K$941.7KNew
ALPS ADVISORS INC43.7K$854.2K−$732.3KCut−$746.2K
Squarepoint Ops LLC42.9K$838.2K−$260.5KAdded$273.9K
DAFNA Capital Management LLC42.5K$830.9KNew
BURKEHILL GLOBAL MANAGEMENT, LP40K$782KNew
J. Goldman & Co LP36.8K$719.4KNew
Swiss National Bank31.6K$617.8K−$529.6KCut−$529.6K
SCHRODER INVESTMENT MANAGEMENT GROUP33.7K$614.1K−$618.5KCut−$1.24M
Voleon Capital Management LP29.6K$578.9K−$170.7KAdded$209K
BARCLAYS PLC29.6K$578.9K−$496.3KCut−$669.4K
JACOBS LEVY EQUITY MANAGEMENT, INC27.5K$538.3KNew
RHUMBLINE ADVISERS26.8K$524.2K−$367.8KCut−$272.7K
ARISTEIA CAPITAL, L.L.C.500K$517.5KNew
JPMORGAN CHASE & CO25.1K$457.6K−$392.9KCut−$331.3K
PROFUND ADVISORS LLC21.4K$418.7KNew
Quantinno Capital Management LP21.1K$413KNew
Vanguard Global Advisers, LLC20.8K$407.4KHeld
STATE OF WISCONSIN INVESTMENT BOARD20.8K$406.9K−$171.3KAdded$35.8K
XTX Topco Ltd19.3K$377.5K−$204.2KCut−$64.8K
DEUTSCHE BANK AG\19.3K$376.6K−$214.2KCut−$87.4K
Aquatic Capital Management LLC18.6K$364.4KNew
ALLSTATE CORP18.2K$356.3KNew
Schonfeld Strategic Advisors LLC17.6K$344.8K−$153KAdded$13.4K
Corient Private Wealth LLC16.8K$329.3KNew
PRELUDE CAPITAL MANAGEMENT, LLC16.6K$325.4KNew
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM15.8K$309.3K−$263.1KCut−$260.8K
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC15.5K$303.5K−$140.8KCut−$1.53K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.14.4K$276.8K−$149.9KCut−$42K
China Universal Asset Management Co., Ltd.13.5K$264.4K−$223.1KCut−$219K
Scientech Research LLC13K$253.2KNew
MetLife Investment Management, LLC12.9K$252.4K−$169.3KCut−$114.4K
Creative Planning12.7K$247.5K−$205.7KCut−$198.2K
FOX RUN MANAGEMENT, L.L.C.13.3K$243KNew
SEI INVESTMENTS CO12.4K$242.1KNew
VANGUARD ASSET MANAGEMENT, Ltd10.6K$208.1KHeld
Legal & General Group Plc10.4K$203.9K−$174.8KCut−$269.1K
BNP PARIBAS FINANCIAL MARKETS10K$195.5K−$119.6KCut−$63.7K
CITIGROUP INC9.89K$193.3K−$39.4KAdded$107.9K
WELLS FARGO & COMPANY/MN8.88K$173.7K−$148.9KCut−$594.3K
Tower Research Capital LLC (TRC)7.24K$141.4K−$13.3KAdded$112.6K
Zurcher Kantonalbank (Zurich Cantonalbank)6.78K$132.5KNew
Virtus Investment Advisers, LLC6.72K$131.3K−$109.8KCut−$106.7K
Police & Firemen's Retirement System of New Jersey6.36K$124.4K−$75.4KCut−$39K
NEW YORK STATE COMMON RETIREMENT FUND6.2K$121.2K−$103.9KCut−$103.9K
PNC Financial Services Group, Inc.4.77K$93.2K−$79.9KCut−$118.3K
Vanguard Investments Australia, Ltd.4.2K$82.1KHeld
KLP KAPITALFORVALTNING AS3.4K$66.5K−$57KCut−$57K
Mirae Asset Global Investments Co., Ltd.2.8K$54.7K−$43.7KCut−$40K
STRS OHIO2.8K$54.7K−$46.9KCut−$46.9K
Russell Investments Group, Ltd.2.72K$53.2K−$22.5KAdded$4.37K
NISA INVESTMENT ADVISORS, LLC2.42K$47.2K−$1.93KAdded$43K
Ameritas Investment Partners, Inc.1.92K$37.6K−$22.9KCut−$12.1K
CWM, LLC1.47K$28.8K$28.7KAdded$28.7K
HARBOUR INVESTMENTS, INC.1.37K$26.8KNew
GF FUND MANAGEMENT CO. LTD.1.21K$23.6K−$17.7KCut−$14.7K
US BANCORP \DE\994$19.4K−$14.8KCut−$12.7K
Sterling Capital Management LLC779$15.2K−$13.1KCut−$24.2K
OSAIC HOLDINGS, INC.677$13.2K−$50Added$13.1K
SIGNATUREFD, LLC370$7.23K−$6.2KCut−$6.89K
PRICE T ROWE ASSOCIATES INC /MD/357.3K$6.99K−$5.99KCut−$6.42K
GROUP ONE TRADING LLC300$5.87KNew
Larson Financial Group LLC293$5.73K−$319Added$5.04K
J.Safra Asset Management Corp270$5.28K−$1.54KAdded$1.94K
Quantbot Technologies LP256$5KNew
GAMMA Investing LLC245$4.79K−$3KCut−$1.71K
iA Global Asset Management Inc.215.8K$4.22KNew
FIFTH THIRD BANCORP107$2.09KNew
EverSource Wealth Advisors, LLC98$1.92K−$1.22KCut−$736
Torren Management, LLC95$1.86K−$1.59KCut−$1.59K
Physician Wealth Advisors, Inc.92$1.8K−$1.12KCut−$634
Caitong International Asset Management Co., Ltd60$1.17KNew
Allworth Financial LP26$509−$435Cut−$1.2K
Cornerstone Financial Management LLC26$508−$436Cut−$436
HRT FINANCIAL LP25.7K$503New
ROTHSCHILD INVESTMENT LLC21$411−$16Added$375
SBI Securities Co., Ltd.20$391New
Bare Financial Services, Inc14$274New
MAI Capital Management12$235−$118Cut−$20
Sunbelt Securities, Inc.11$215−$184Cut−$184
Ameritas Advisory Services, LLC6$117New
Stone House Investment Management, LLC5$98New
True Wealth Design, LLC3$59−$50Cut−$50
Essential Partners LLC2$39−$34Cut−$70
Covestor Ltd6$0New

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.