13F Insight
DOSSIER · 13F Holders · Q1 2026Healthcare · Pharmaceutical PreparationsMost-boughtAI cap-ex
JANX

JANUX THERAPEUTICS INC

199 institutions still hold JANUX THERAPEUTICS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 47103J105·Pharmaceutical Preparations·199 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 0.3%
vs prior quarter
13F value held
$648M
75.0% inst. owned
of float
Holders
199
-70 QoQ
filers reporting
Activity
+82 / −16
+1,028 added · −860 reduced
this quarter
Concentration
24.00%
RA CAPITAL MANAGEMENT, L.P. #1
top holder share
AI Holders Summary · Q1 2026

199 institutions reported JANX in Q1 2026. RA CAPITAL MANAGEMENT, L.P. leads at 24.0% of the visible book. -70 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
RA CAPITAL MANAGEMENT, L.P.
CIK 0001346824
$156M11.2M1.65%Q1 202602
BlackRock, Inc.
CIK 0002012383
$76M5.4M0.00%Q1 202603
JANUS HENDERSON GROUP PLC
CIK 0001274173
$58M4.2M0.03%Q1 202604
Prosight Management, LP
CIK 0001617201
$49M3.5M8.09%Q1 202605
FMR LLC
CIK 0000315066
$35M2.5M0.00%Q1 202606
STATE STREET CORP
CIK 0000093751
$34M2.5M0.00%Q1 202607
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$25M1.8M0.00%Q1 202608
TCG Crossover Management, LLC
CIK 0001839948
$25M1.8M0.71%Q1 202609
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$22M1.6M0.00%Q1 202610
Alyeska Investment Group, L.P.
CIK 0001453072
$18M1.3M0.05%Q4 202511
Vanguard Portfolio Management
CIK 0002100121
$18M1.3M0.00%Q1 202612
CITADEL ADVISORS LLC
CIK 0001423053
$17M1.2M0.00%Q4 202513
Deep Track Capital, LP
CIK 0001856083
$17M1.2M0.27%Q1 202614
Point72 Asset Management, L.P.
CIK 0001603466
$16M1.2M0.02%Q1 202615
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$16M1.1M0.00%Q1 202616
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$15M1.1M0.02%Q1 202617
Logos Global Management LP
CIK 0001792126
$14M1.0M0.69%Q1 202618
ORBIMED ADVISORS LLC
CIK 0001055951
$14M984K0.27%Q1 202619
READYSTATE ASSET MANAGEMENT LP
CIK 0001900923
$12M886K0.50%Q4 202520
Nantahala Capital Management, LLC
CIK 0001472322
$11M810K0.41%Q1 2026
Page 1 of 10
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