13F Insight
DOSSIER · 13F Holders · Q1 2026CyclicalNet sold
RGNX

REGENXBIO Inc

186 institutions still hold REGENXBIO Inc as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 75901b107·186 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 3.4%
vs prior quarter
13F value held
$277M
53.0% inst. owned
of float
Holders
186
+101 QoQ
filers reporting
Activity
+92 / −46
+800 added · −837 reduced
this quarter
Concentration
17.48%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

186 institutions reported RGNX in Q1 2026. BlackRock, Inc. leads at 17.5% of the visible book. +101 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$48M5.8M0.00%Q1 202602
Redmile Group, LLC
CIK 0001425738
$37M4.4M2.42%Q1 202603
JPMORGAN CHASE & CO
CIK 0000019617
$27M3.5M0.00%Q1 202604
STATE STREET CORP
CIK 0000093751
$23M2.7M0.00%Q1 202605
MORGAN STANLEY
CIK 0000895421
$17M2.1M0.00%Q1 202606
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$17M2.0M0.00%Q1 202607
GOLDMAN SACHS GROUP INC
CIK 0000886982
$15M1.8M0.00%Q1 202608
Integral Health Asset Management, LLC
CIK 0001773206
$13M1.5M0.60%Q1 202609
Qube Research & Technologies Ltd
CIK 0001729829
$11M1.3M0.01%Q1 202610
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$10M1.1M0.00%Q1 202611
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$9M1.1M0.00%Q1 202612
Vanguard Portfolio Management
CIK 0002100121
$9M1.0M0.00%Q1 202613
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$8M1.0M0.00%Q1 202614
Assenagon Asset Management S.A.
CIK 0001546007
$8M981K0.01%Q1 202615
Nuveen, LLC
CIK 0001871926
$5M582K0.00%Q1 202616
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$5M555K0.00%Q1 202617
HRT FINANCIAL LP
CIK 0001475597
$4M300K0.01%Q4 202518
Pale Fire Capital SE
CIK 0001922318
$4M494K0.36%Q1 202619
22NW, LP
CIK 0001694297
$4M493K2.83%Q1 202620
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$3M415K0.00%Q1 2026
Page 1 of 10
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