13F Insight
DOSSIER · 13F Holders · Q2 2026
CTMX

CYTOMX THERAPEUTICS INC

184 institutions still hold CYTOMX THERAPEUTICS INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 23284F105·184 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$717M
visible holders
Holders
184
filers reporting
Concentration
17.12%
FMR LLC #1
top holder share
AI Holders Summary · Q2 2026

Assenagon Asset Management held its 364,173-share cornerstone stake in CytomX Therapeutics completely firm during Q2 2026, commanding over 40% of the micro-cap biotech’s $3.38 million institutional roster. China Universal also expanded its holding by 17.4% ($35.9k flow).

Key Institutional Buyers

  • China Universal Asset Management: Added 9,579 shares (+17.4%, +$35.9k flow) to bring total holding to 64,647 shares ($242k).
  • Tema ETFs: Increased holding by 1,482 shares to 228,987 shares ($858k).
  • New Institutional Entrants: Police & Firemen’s Retirement System of NJ initiated a 52,499-share position ($197k), joined by PSP Research ($147k).
Analysis generated by 13F Insight from SEC Form 13F filing data · Q2 2026. Methodology

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
FMR LLC
CIK 0000315066
$123M32.7M0.01%Q2 202602
Kynam Capital Management, LP
CIK 0001907884
$81M21.7M4.50%Q2 202603
VR Adviser, LLC
CIK 0001615982
$66M15.6M3.27%Q4 202504
BlackRock, Inc.
CIK 0002012383
$66M17.6M0.00%Q2 202605
BANK OF AMERICA CORP /DE/
CIK 0000070858
$57M15.1M0.00%Q2 202606
PERCEPTIVE ADVISORS LLC
CIK 0001224962
$47M10.1M0.93%Q1 202607
STATE STREET CORP
CIK 0000093751
$44M11.7M0.00%Q2 202608
Point72 Asset Management, L.P.
CIK 0001603466
$37M7.9M0.05%Q1 202609
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$32M8.5M0.00%Q2 202610
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$19M5.2M0.00%Q2 202611
BAKER BROS. ADVISORS LP
CIK 0001263508
$18M4.3M0.11%Q4 202512
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$18M4.7M0.00%Q2 202613
Elmind Capital, LP
CIK 0002052213
$17M4.5M4.29%Q2 202614
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$15M4.1M0.01%Q2 202615
Eversept Partners, LP
CIK 0001697013
$13M3.6M0.69%Q2 202616
UBS Group AG
CIK 0001610520
$13M3.5M0.00%Q2 202617
Siren, L.L.C.
CIK 0002005245
$13M3.5M0.26%Q2 202618
ADAR1 Capital Management, LLC
CIK 0001940272
$13M3.4M0.58%Q2 202619
CITADEL ADVISORS LLC
CIK 0001423053
$12M3.3M0.00%Q2 202620
MARSHALL WACE, LLP
CIK 0001318757
$11M3.0M0.01%Q2 2026
Page 1 of 10
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Insiders at CYTOMX THERAPEUTICS INC
Carvajal Alejandra →Fuchs Charles S. →Ashworth Alan →Gilbert Halley E →Meyers James R →Mohindru Mani →Young Matthew P. →Su Zhen →