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Regenxbio
RGNX

159 hedge funds and large institutions have $345M invested in Regenxbio in 2025 Q2 according to their latest regulatory filings, with 25 funds opening new positions, 60 increasing their positions, 50 reducing their positions, and 28 closing their positions.

New
Increased
Maintained
Reduced
Closed

21% more call options, than puts

Call options by funds: $1.17M | Put options by funds: $972K

20% more repeat investments, than reductions

Existing positions increased: 60 | Existing positions reduced: 50

16% more capital invested

Capital invested by funds: $298M → $345M (+$47M)

0.19% more ownership

Funds ownership: 83.18% → 83.37% (+0.19%)

3% less funds holding

Funds holding: 164 → 159 (-5)

11% less first-time investments, than exits

New positions opened: 25 | Existing positions closed: 28

67% less funds holding in top 10

Funds holding in top 10: 3 → 1 (-2)

Holders
159
Holders Change
-5
Holders Change %
-3.05%
% of All Funds
2.09%
Holding in Top 10
1
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-66.67%
% of All Funds
0.01%
New
25
Increased
60
Reduced
50
Closed
28
Calls
$1.17M
Puts
$972K
Net Calls
+$201K
Net Calls Change
+$453K

Top Buyers

Rank Fund Capital Flow
1
BlackRock
BlackRock
New York
+$10.9M
2
Goldman Sachs
Goldman Sachs
New York
+$8.64M
3
State Street
State Street
Massachusetts
+$6.51M
4
Renaissance Technologies
Renaissance Technologies
New York
+$3.67M
5
AQR Capital Management
AQR Capital Management
Connecticut
+$2.59M

Top Sellers

Rank Fund Capital Flow
1
Morgan Stanley
Morgan Stanley
New York
-$8.97M
2
Citadel Advisors
Citadel Advisors
Florida
-$6.16M
3
Balyasny Asset Management
Balyasny Asset Management
Illinois
-$5.03M
4
JP Morgan Chase
JP Morgan Chase
New York
-$4.29M
5
CSS
Cubist Systematic Strategies
Connecticut
-$2.56M
Name Holding Trade Value Shares
Change 		Change in
Stake
Citadel Advisors
26
Citadel Advisors
Florida
$2.4M -$6.16M -735,670 -72%
Jane Street
27
Jane Street
New York
$1.99M -$1.44M -171,655 -41%
Acadian Asset Management
28
Acadian Asset Management
Massachusetts
$1.97M +$695K +82,998 +53%
Barclays
29
Barclays
United Kingdom
$1.97M +$1M +119,876 +100%
GCP
30
GSA Capital Partners
United Kingdom
$1.86M +$797K +95,253 +73%
EAM
31
Exome Asset Management
New York
$1.86M -$1.5M -179,221 -44%
Marshall Wace
32
Marshall Wace
United Kingdom
$1.83M -$27.1K -3,238 -1%
AI
33
ArchPoint Investors
Florida
$1.81M -$8.37K -1,000 -0.5%
Hudson Bay Capital Management
34
Hudson Bay Capital Management
Connecticut
$1.81M -$628K -75,000 -25%
Squarepoint
35
Squarepoint
New York
$1.8M +$1.75M +209,084 +2,049%
Two Sigma Investments
36
Two Sigma Investments
New York
$1.71M -$994K -118,757 -36%
ACM
37
ADAR1 Capital Management
Texas
$1.71M -$1.19M -142,534 -41%
PAM
38
Panagora Asset Management
Massachusetts
$1.69M – – –
Deutsche Bank
39
Deutsche Bank
Germany
$1.54M -$66.4K -7,937 -4%
YIH
40
Y-Intercept (HK)
Hong Kong
$1.45M +$1.48M +176,999 New
Fidelity Investments
41
Fidelity Investments
Massachusetts
$1.41M +$26.2K +3,135 +2%
HWAM
42
Hennion & Walsh Asset Management
New Jersey
$1.27M -$40.9K -4,891 -3%
Susquehanna International Group
43
Susquehanna International Group
Pennsylvania
$1.25M +$102K +12,190 +9%
NRD
44
Nebula Research & Development
New York
$1.24M +$1.27M +151,293 New
MCM
45
Moore Capital Management
New York
$1.23M +$419K +50,000 +50%
Macquarie Group
46
Macquarie Group
Australia
$1.22M – – –
Bank of New York Mellon
47
Bank of New York Mellon
New York
$1.18M +$22.7K +2,710 +2%
IC
48
IEQ Capital
California
$1.06M +$658K +78,641 +154%
Los Angeles Capital Management
49
Los Angeles Capital Management
California
$1.03M +$1.05M +125,408 New
Two Sigma Advisers
50
Two Sigma Advisers
New York
$1.03M -$604K -72,100 -37%
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RGNX Hedge Fund Activity: Q2 2025 in Review

159 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Regenxbio (RGNX) for Q2 2025, worth a combined $345M — up 16% from $298M a quarter earlier.

Sellers outnumbered buyers: 28 funds closed out of RGNX and 25 opened new positions — a net loss of 3 holders — while 50 trimmed existing stakes and 60 added.

The largest buyer was BlackRock, adding an estimated $10.9M. The largest seller was Morgan Stanley, cutting an estimated $8.97M.

  • 159 institutional investors held Regenxbio (RGNX) as of Q2 2025, down from 164 in Q1 2025.
  • Funds reported $345M of Regenxbio stock for Q2 2025, up 16% quarter-over-quarter.
  • 25 funds opened new Regenxbio positions in Q2 2025 and 28 closed out, a net change of -3 holders.
  • The largest Regenxbio buyer in Q2 2025 was BlackRock, an estimated $10.9M added.
  • The largest Regenxbio seller in Q2 2025 was Morgan Stanley, an estimated $8.97M sold.

Based on aggregated 13F filings for Q2 2025.