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Regenxbio
RGNX

178 hedge funds and large institutions have $355M invested in Regenxbio in 2026 Q1 according to their latest regulatory filings, with 33 funds opening new positions, 61 increasing their positions, 58 reducing their positions, and 26 closing their positions.

New
Increased
Maintained
Reduced
Closed

60% more call options, than puts

Call options by funds: $3.78M | Put options by funds: $2.36M

27% more first-time investments, than exits

New positions opened: 33 | Existing positions closed: 26

2% more funds holding

Funds holding: 174 → 178 (+4)

1.24% more ownership

Funds ownership: 81.28% → 82.52% (+1.2%)

5% more repeat investments, than reductions

Existing positions increased: 61 | Existing positions reduced: 58

0% more funds holding in top 10

Funds holding in top 10: 2 → 2 (0)

40% less capital invested

Capital invested by funds: $593M → $355M (-$238M)

Holders
178
Holders Change
+4
Holders Change %
+2.3%
% of All Funds
2.19%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.02%
New
33
Increased
61
Reduced
58
Closed
26
Calls
$3.78M
Puts
$2.36M
Net Calls
+$1.42M
Net Calls Change
+$1.2M

Top Buyers

Rank Fund Capital Flow
1
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
+$9.12M
2
State Street
State Street
Massachusetts
+$4.67M
3
Two Sigma Investments
Two Sigma Investments
New York
+$4.46M
4
IHAM
Integral Health Asset Management
New York
+$3.15M
5
YIH
Y-Intercept (HK)
Hong Kong
+$2.89M

Top Sellers

Rank Fund Capital Flow
1
2L
22NW LP
Washington
-$4.53M
2
Acadian Asset Management
Acadian Asset Management
Massachusetts
-$3.91M
3
TI
Trexquant Investment
Connecticut
-$3.61M
4
AQR Capital Management
AQR Capital Management
Connecticut
-$3.26M
5
MCM
Moore Capital Management
New York
-$2.88M
Name Holding Trade Value Shares
Change 		Change in
Stake
Renaissance Technologies
26
Renaissance Technologies
New York
$2.56M -$292K -27,800 -8%
VC
27
Voss Capital
Texas
$2.48M +$8.27K +787 +0.3%
D.E. Shaw & Co
28
D.E. Shaw & Co
New York
$2.4M +$2.29M +217,613 +318%
Millennium Management
29
Millennium Management
New York
$2.39M +$741K +70,508 +33%
YIH
30
Y-Intercept (HK)
Hong Kong
$2.3M +$2.89M +275,021 New
GP
31
GSK plc
$2.27M – – –
UBS Group
32
UBS Group
Switzerland
$2.16M +$533K +50,774 +25%
AI
33
ArchPoint Investors
Florida
$1.86M – – –
JF
34
Jump Financial
Illinois
$1.85M +$449K +42,764 +24%
Ameriprise
35
Ameriprise
Minnesota
$1.68M -$494K -47,015 -19%
PM
36
Prosight Management
Texas
$1.68M +$2.1M +200,000 New
Deutsche Bank
37
Deutsche Bank
Germany
$1.65M +$46.1K +4,389 +2%
Man Group
38
Man Group
United Kingdom
$1.57M +$1.3M +124,054 +195%
SPS
39
Susquehanna Portfolio Strategies
Pennsylvania
$1.56M +$557K +53,045 +40%
Hudson Bay Capital Management
40
Hudson Bay Capital Management
Connecticut
$1.51M +$420K +40,000 +29%
Invesco
41
Invesco
Georgia
$1.33M +$9.73K +926 +0.6%
NAMI
42
Nomura Asset Management International
Pennsylvania
$1.25M – – –
Bank of New York Mellon
43
Bank of New York Mellon
New York
$1.18M -$56.5K -5,375 -4%
Point72 Asset Management
44
Point72 Asset Management
Connecticut
$1.17M +$1.12M +106,407 +319%
IC
45
IEQ Capital
California
$1.17M -$494K -47,028 -25%
ECM
46
ExodusPoint Capital Management
New York
$967K +$629K +59,834 +108%
Russell Investments Group
47
Russell Investments Group
United Kingdom
$951K +$1.09M +103,738 +1,071%
Massachusetts Financial Services
48
Massachusetts Financial Services
Massachusetts
$939K -$31.3K -2,977 -3%
AllianceBernstein
49
AllianceBernstein
Tennessee
$932K – – –
VPC
50
Vestal Point Capital
New York
$909K +$783K +74,525 +219%
1
2
3 4 5

RGNX Hedge Fund Activity: Q1 2026 in Review

178 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Regenxbio (RGNX) for Q1 2026, worth a combined $355M — down 40% from $593M a quarter earlier.

Buyers outnumbered sellers: 33 funds opened new RGNX positions and 26 closed out — a net gain of 7 holders — while 61 added to existing stakes and 58 trimmed.

The largest buyer was Qube Research & Technologies (QRT), adding an estimated $9.12M. The largest seller was 22NW LP, cutting an estimated $4.53M.

  • 178 institutional investors held Regenxbio (RGNX) as of Q1 2026, up from 174 in Q4 2025.
  • Funds reported $355M of Regenxbio stock for Q1 2026, down 40% quarter-over-quarter.
  • 33 funds opened new Regenxbio positions in Q1 2026 and 26 closed out, a net change of +7 holders.
  • The largest Regenxbio buyer in Q1 2026 was Qube Research & Technologies (QRT), an estimated $9.12M added.
  • The largest Regenxbio seller in Q1 2026 was 22NW LP, an estimated $4.53M sold.

Based on aggregated 13F filings for Q1 2026.