ZENAS BIOPHARMA INC

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ZBIO·98937L105·US·Common Stock·Healthcare - Biotechnology-Activist

ZBIO (ZENAS BIOPHARMA INC) is held by 77 institutional investors as of Q1 2026. Largest holders: FMR LLC ($177.6M), FEDERATED HERMES, INC. ($61.1M), Polar Capital Holdings Plc ($49.8M). Net institutional sentiment: Bullish.

77

Holders

(5 Elite)

$629.4M

Total Value

71% (86)

Consensus

61 buying - 25 selling

13F: Mar 31, 2026Insider & Congress: Updated regularly

Smart Money Verdict

View all

Institutional (13F)78

Insider (Form 4)39

Activist (13D/13G)54

Congressional (STOCK Act)32

Holder Quality

27

★★★★★

Elite

67

★★★★

Strong

35

★★★

Solid

73

★★

Below

20

★

Weak

Held by 77 funds

5 elite

Who's Trading

Source dates: Price Aug 13, 2026 · Insiders Apr 29, 2026 · Activists May 5, 2026 · Congress none

ActivistMLMOULDER LEON O JR5.1%May 5, 2026

InsiderMJMOULDER LEON O JRBuy $617KApr 29, 2026

InsiderMJMOULDER LEON O JRBuy $451KApr 28, 2026

InsiderFLFairmount Funds Management LLCBuy $3.0MMar 31, 2026

InsiderMJMOULDER LEON O JRBuy $657KMar 31, 2026

InsiderLHLu HongboBuy $70KMar 31, 2026

InsiderMJMOULDER LEON O JRBuy $365KMar 30, 2026

ActivistFMR LLC14.3%Feb 5, 2026

InsiderMJMOULDER LEON O JRBuy $331KJan 9, 2026

InsiderMJMOULDER LEON O JRBuy $489KJan 8, 2026

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Top Holders

Top Holders (77)History

AllNewIncreasedHeldDecreasedExited

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
FMR LLC	Increased	9.1M(+17.9%)	$177.6M	0.0%	+32.43%	36
FEDERATED HERMES, INC.	Increased	3.1M(+15.2%)	$61.1M	0.1%	+33.92%	34
Polar Capital Holdings Plc	Increased	2.5M(+141.0%)	$49.8M	0.2%	-2.38%	57
Capital International Investors	New	2.4M	$47.6M	0.0%	+15.97%	40
BlackRock, Inc.	Increased	2M(+15.3%)	$39.8M	0.0%	+52.01%	33
ALLIANCEBERNSTEIN L.P.	Increased	897,321(+4790.0%)	$32.6M	0.0%	+17.34%	47
STATE STREET CORP	Increased	1.5M(+235.6%)	$28.8M	0.0%	+32.65%	46
WELLINGTON MANAGEMENT GROUP LLP	Increased	1.2M(+45.7%)	$24.4M	0.0%	+48.75%	39
VAVANGUARD CAPITAL MANAGEMENT LLC	New	1.2M	$24.3M	0.0%	+15.97%	40
BALYASNY ASSET MANAGEMENT L.P.	Increased	667,070(+245.4%)	$13M	0.0%	+2.52%	45
GEODE CAPITAL MANAGEMENT, LLC	Increased	655,785(+11.4%)	$12.8M	0.0%	+65.45%	31
Woodline Partners LP	New	590,525	$11.5M	0.0%	+15.97%	39
MWMARSHALL WACE, LLP	Increased	501,928(+6969.4%)	$9.8M	0.0%	+15.23%	45
MILLENNIUM MANAGEMENT LLC	Increased	476,818(+869.9%)	$9.3M	0.0%	+18.20%	45
BANK OF AMERICA CORP /DE/	Increased	388,347(+723.5%)	$7.6M	0.0%	+14.32%	44
GOLDMAN SACHS GROUP INC	Increased	381,461(+191.9%)	$7.5M	0.0%	+0.39%	44
UBS Group AG	Increased	367,405(+428.7%)	$7.2M	0.0%	+16.66%	44
PRICE T ROWE ASSOCIATES INC /MD/	Decreased	357,266(-3.2%)	$7M	0.0%	+75.42%	0
TWO SIGMA INVESTMENTS, LP	Increased	275,056(+1721.6%)	$5.4M	0.0%	+19.94%	44
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	251,410	$4.9M	0.0%	+15.97%	37

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer