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Regenxbio
RGNX

166 hedge funds and large institutions have $399M invested in Regenxbio in 2025 Q3 according to their latest regulatory filings, with 23 funds opening new positions, 63 increasing their positions, 51 reducing their positions, and 15 closing their positions.

New
Increased
Maintained
Reduced
Closed

100% more funds holding in top 10

Funds holding in top 10: 1 → 2 (+1)

53% more first-time investments, than exits

New positions opened: 23 | Existing positions closed: 15

24% more repeat investments, than reductions

Existing positions increased: 63 | Existing positions reduced: 51

16% more capital invested

Capital invested by funds: $345M → $399M (+$54.3M)

4% more funds holding

Funds holding: 159 → 166 (+7)

7% less call options, than puts

Call options by funds: $1.52M | Put options by funds: $1.64M

1.49% less ownership

Funds ownership: 83.37% → 81.88% (-1.5%)

Holders
166
Holders Change
+7
Holders Change %
+4.4%
% of All Funds
2.18%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.03%
New
23
Increased
63
Reduced
51
Closed
15
Calls
$1.52M
Puts
$1.64M
Net Calls
-$120K
Net Calls Change
-$321K

Top Buyers

Rank Fund Capital Flow
1
Morgan Stanley
Morgan Stanley
New York
+$6.27M
2
ICM
Invenomic Capital Management
Massachusetts
+$3.78M
3
IHAM
Integral Health Asset Management
New York
+$3.54M
4
AQR Capital Management
AQR Capital Management
Connecticut
+$3.18M
5
PFCS
Pale Fire Capital SE
Czech Republic
+$2.01M

Top Sellers

Rank Fund Capital Flow
1
Balyasny Asset Management
Balyasny Asset Management
Illinois
-$6.54M
2
Renaissance Technologies
Renaissance Technologies
New York
-$3.76M
3
BlackRock
BlackRock
New York
-$3.43M
4
TI
Trexquant Investment
Connecticut
-$2.55M
5
Citadel Advisors
Citadel Advisors
Florida
-$2.09M
Name Holding Trade Value Shares
Change 		Change in
Stake
UBS Group
26
UBS Group
Switzerland
$2.53M -$402K -45,454 -15%
PFCS
27
Pale Fire Capital SE
Czech Republic
$2.47M +$2.01M +227,755 +818%
Ameriprise
28
Ameriprise
Minnesota
$2.34M -$1.16M -130,771 -35%
Barclays
29
Barclays
United Kingdom
$2.18M -$120K -13,595 -6%
AI
30
ArchPoint Investors
Florida
$2.16M +$26.5K +3,000 +1%
PAM
31
Panagora Asset Management
Massachusetts
$2M +$3.49K +395 +0.2%
Squarepoint
32
Squarepoint
New York
$1.99M -$114K -12,881 -6%
ACM
33
ADAR1 Capital Management
Texas
$1.98M -$21.3K -2,409 -1%
Hudson Bay Capital Management
34
Hudson Bay Capital Management
Connecticut
$1.93M -$177K -20,000 -9%
Fidelity Investments
35
Fidelity Investments
Massachusetts
$1.88M +$209K +23,671 +14%
Deutsche Bank
36
Deutsche Bank
Germany
$1.84M +$33.5K +3,790 +2%
HF
37
HRT Financial
New York
$1.66M +$1.52M +172,186 New
IC
38
IEQ Capital
California
$1.53M +$258K +29,194 +23%
Two Sigma Investments
39
Two Sigma Investments
New York
$1.49M -$475K -53,665 -26%
Bank of New York Mellon
40
Bank of New York Mellon
New York
$1.45M +$53.3K +6,023 +4%
MCM
41
Moore Capital Management
New York
$1.45M – – –
Invesco
42
Invesco
Georgia
$1.45M +$324K +36,671 +32%
Macquarie Group
43
Macquarie Group
Australia
$1.44M – – –
HWAM
44
Hennion & Walsh Asset Management
New Jersey
$1.37M -$113K -12,766 -8%
SPS
45
Susquehanna Portfolio Strategies
Pennsylvania
$1.29M +$1.18M +133,556 New
Massachusetts Financial Services
46
Massachusetts Financial Services
Massachusetts
$1.15M +$869K +98,295 +479%
American Century Companies
47
American Century Companies
Missouri
$1.15M +$76K +8,589 +8%
Man Group
48
Man Group
United Kingdom
$1.08M +$244K +27,599 +33%
Raymond James Financial
49
Raymond James Financial
Florida
$919K -$143K -16,219 -15%
Los Angeles Capital Management
50
Los Angeles Capital Management
California
$894K -$290K -32,786 -26%
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RGNX Hedge Fund Activity: Q3 2025 in Review

166 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Regenxbio (RGNX) for Q3 2025, worth a combined $399M — up 16% from $345M a quarter earlier.

Buyers outnumbered sellers: 23 funds opened new RGNX positions and 15 closed out — a net gain of 8 holders — while 63 added to existing stakes and 51 trimmed.

The largest buyer was Morgan Stanley, adding an estimated $6.27M. The largest seller was Balyasny Asset Management, exiting entirely with an estimated $6.54M sold.

  • 166 institutional investors held Regenxbio (RGNX) as of Q3 2025, up from 159 in Q2 2025.
  • Funds reported $399M of Regenxbio stock for Q3 2025, up 16% quarter-over-quarter.
  • 23 funds opened new Regenxbio positions in Q3 2025 and 15 closed out, a net change of +8 holders.
  • The largest Regenxbio buyer in Q3 2025 was Morgan Stanley, an estimated $6.27M added.
  • The largest Regenxbio seller in Q3 2025 was Balyasny Asset Management, an estimated $6.54M sold.

Based on aggregated 13F filings for Q3 2025.