13F Insight
DOSSIER · 13F Holders · Q1 2026High-convictionMulti-bagger
TARA

PROTARA THERAPEUTICS INC

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

CUSIP 74365U107·120 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 6.8%
vs prior quarter
13F value held
$191M
51.0% inst. owned
of float
Holders
120
+28 QoQ
filers reporting
Activity
+62 / −21
+929 added · −725 reduced
this quarter
Concentration
14.19%
JANUS HENDERSON GROUP PLC #1
top holder share
AI Holders Summary · Q1 2026

120 institutions reported TARA in Q1 2026. JANUS HENDERSON GROUP PLC leads at 14.2% of the visible book. +28 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
JANUS HENDERSON GROUP PLC
CIK 0001274173
$27M5.2M0.01%Q1 202602
BlackRock, Inc.
CIK 0002012383
$18M3.4M0.00%Q1 202603
Velan Capital Investment Management LP
CIK 0001848809
$15M2.8M9.25%Q1 202604
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$15M2.8M0.01%Q1 202605
Blackstone Inc.
CIK 0001393818
$12M2.3M0.05%Q1 202606
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$11M2.1M0.00%Q1 202607
Sio Capital Management, LLC
CIK 0001482416
$10M2.0M1.47%Q1 202608
ACORN CAPITAL ADVISORS, LLC
CIK 0002054410
$9M1.8M2.59%Q1 202609
Integral Health Asset Management, LLC
CIK 0001773206
$9M1.8M0.44%Q1 202610
AIGH Capital Management LLC
CIK 0001835943
$8M1.6M1.15%Q1 202611
UBS Group AG
CIK 0001610520
$7M1.4M0.00%Q1 202612
5AM Venture Management, LLC
CIK 0001799883
$7M1.4M2.30%Q4 202513
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$6M1.2M0.00%Q1 202614
Point72 Asset Management, L.P.
CIK 0001603466
$6M1.2M0.01%Q1 202615
Patient Square Capital LP
CIK 0001819257
$5M1.0M0.95%Q1 202616
STATE STREET CORP
CIK 0000093751
$5M1.0M0.00%Q1 202617
BAKER BROS. ADVISORS LP
CIK 0001263508
$5M972K0.03%Q4 202518
CITADEL ADVISORS LLC
CIK 0001423053
$5M931K0.00%Q4 202519
ADAR1 Capital Management, LLC
CIK 0001940272
$5M941K0.29%Q1 202620
BANK OF AMERICA CORP /DE/
CIK 0000070858
$5M926K0.00%Q1 2026
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