ZBIO

ZENAS BIOPHARMA INC
USCUSIP 98937L105
Institutional Owners
50
+13 QoQ
13F Value Held
$270.5M
Insider Net · 180d
$0
0↑ 0↓
Recent Filings
0
Smart-money sentimentBullish
BearishBullish
13F funds (latest Q)34 adding · 14 trimming
Insider net (180d)+$0
Price history not yet available for ZBIO.

Top institutional holders

50 13F filers
#FundPosition valueSharesLast moveAs of
1NEA Management Company, LLC
$78.7M
4.02MAddedQ1 2026
2Polar Capital Holdings Plc
$49.8M
2.55MAddedQ1 2026
3STATE STREET CORP
$28.8M
1.47MAddedQ1 2026
4VANGUARD CAPITAL MANAGEMENT LLC
$24.3M
1.25MNewQ1 2026
5EcoR1 Capital, LLC
$15.4M
789.5KHeldQ1 2026
6ArrowMark Colorado Holdings LLC
$12.9M
658.9KReducedQ1 2026
7Woodline Partners LP
$11.5M
590.5KNewQ1 2026
8Rock Springs Capital Management LP
$9.8M
502.1KHeldQ1 2026
9Point72 Asset Management, L.P.
$9.2M
368.4KNewQ4 2025
10VANGUARD PORTFOLIO MANAGEMENT LLC
$4.9M
251.4KNewQ1 2026
11Jefferies Financial Group Inc.
$4.3M
219.9KNewQ1 2026
12Vestal Point Capital, LP
$3.9M
200.0KNewQ1 2026
13VANGUARD FIDUCIARY TRUST CO
$3.5M
179.4KNewQ1 2026
14SEB Asset Management AB
$3.2M
163.9KNewQ1 2026
15Walleye Capital LLC
$2.4M
125.2KNewQ1 2026
16VOLORIDGE INVESTMENT MANAGEMENT, LLC
$1.5M
77.5KReducedQ1 2026
17Rafferty Asset Management, LLC
$942K
48.2KNewQ1 2026
18ALPS ADVISORS INC
$854K
43.7KReducedQ1 2026
19J. Goldman & Co LP
$719K
36.8KNewQ1 2026
20CITADEL ADVISORS LLC
$669K
34.2KAddedQ1 2026
21SOROS FUND MANAGEMENT LLC
$635K
37.5KNewQ3 2024
22JACOBS LEVY EQUITY MANAGEMENT, INC
$538K
27.5KNewQ1 2026
23PROFUND ADVISORS LLC
$419K
21.4KNewQ1 2026
24Aquatic Capital Management LLC
$364K
18.6KNewQ1 2026
25Schonfeld Strategic Advisors LLC
$345K
17.6KAddedQ1 2026

Fund activity — latest quarter

Opened (NEW)
20
funds
Added
14
funds
Reduced
5
funds
Exited
9
funds

Insider activity (Form 4)

No Form 4 insider transactions on file yet.

Institutional ownership over time

45 funds+43 since Q3 2024
02345Q3 2024Q1 2025Q3 2025Q1 2026
funds holding aggregate valuelatest $254M

Funds that own ZBIO also own

CompanyCo-held byCombined value
LILLY, ELI AND COMPANYLLY38 funds$36.1B
Microsoft CorpMSFT37 funds$127.6B
Amazon.com IncAMZN37 funds$92.0B
Danaher CorpDHR37 funds$6.0B
NVIDIA CorpNVDA36 funds$196.6B
Broadcom LtdAVGO36 funds$68.1B
Tesla IncTSLA36 funds$47.7B
JPMorgan Chase & CoJPM36 funds$40.2B
Micron Technology IncMU36 funds$22.8B
Costco Wholesale CorpCOST36 funds$20.5B
Advanced Micro Devices IncAMD36 funds$17.9B
Intuitive Surgical IncISRG36 funds$8.6B

Ranked by how many of ZBIO's institutional holders also hold each name — a cross-fund conviction signal. Via the MCP server (ticker.co_held).

Recent filings

0 shown

No filings captured for this ticker in the live stream yet.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for ZBIO. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.