Stock Ownership/ZBIO

ZENAS BIOPHARMA INC (ZBIO): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in ZBIO · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
13
13F filers
Aggregate Value
$106.7M
Across holders
Last Price
$31.65
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity9 increased4 reduced2 exited
Full exits: VOLORIDGE INVESTMENT MANAGEMENT, LLC, Schonfeld Strategic Advisors LLC
Institutional Holders of ZBIO
↗
13 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund815K$20.7M19.4%0.0%Added+$13.7MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund660K$16.8M15.7%0.0%Added+$4.7MQ2 2026
Woodline Partners LP
CIK 0001784547
Hedge Fund591K$15.0M14.0%0.0%Added+$355Q2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund577K$14.6M13.7%0.0%Reduced$-2.3MQ2 2026
ArrowMark Colorado Holdings LLC
CIK 0001483859
Hedge Fund573K$14.6M13.6%0.6%Reduced$-2.2MQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund323K$8.2M7.7%0.0%Reduced$-10.8MQ2 2026
Walleye Capital LLC
CIK 0001758720
Hedge Fund209K$5.3M5.0%0.0%Added+$2.1MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund196K$5.0M4.7%0.0%Added+$3.2MQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund125K$3.2M3.0%0.0%Added+$2.1MQ2 2026
Verition Fund Management LLC
CIK 0001454027
Hedge Fund73K$1.9M1.7%0.0%Added—Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$20.7M· 19.4% of total· 0.0% port· 815K sh· +$13.7M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$16.8M· 15.7% of total· 0.0% port· 660K sh· +$4.7M QoQ· Q2 2026
Woodline Partners LPAdded
Hedge Fund
$15.0M· 14.0% of total· 0.0% port· 591K sh· +$355 QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCReduced
Hedge Fund
$14.6M· 13.7% of total· 0.0% port· 577K sh· $-2.3M QoQ· Q2 2026
ArrowMark Colorado Holdings LLCReduced
Hedge Fund
$14.6M· 13.6% of total· 0.6% port· 573K sh· $-2.2M QoQ· Q2 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$8.2M· 7.7% of total· 0.0% port· 323K sh· $-10.8M QoQ· Q2 2026
Walleye Capital LLCAdded
Hedge Fund
$5.3M· 5.0% of total· 0.0% port· 209K sh· +$2.1M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$5.0M· 4.7% of total· 0.0% port· 196K sh· +$3.2M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$3.2M· 3.0% of total· 0.0% port· 125K sh· +$2.1M QoQ· Q2 2026
Verition Fund Management LLCAdded
Hedge Fund
$1.9M· 1.7% of total· 0.0% port· 73K sh· — QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$789K· 0.7% of total· 0.0% port· 31K sh· +$767K QoQ· Q2 2026
Point72 Asset Management, L.P.Added
Hedge Fund
$410K· 0.4% of total· 0.0% port· 16K sh· — QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$372K· 0.3% of total· 0.0% port· 15K sh· — QoQ· Q2 2026
1–10 of 13
1 / 2
Loading recent insider activity…
← Stock ownership