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Mustang Bio
MBIO

17 hedge funds and large institutions have $70.9K invested in Mustang Bio in 2025 Q2 according to their latest regulatory filings, with 3 funds opening new positions, 4 increasing their positions, 3 reducing their positions, and 2 closing their positions.

New
Increased
Maintained
Reduced
Closed

50% more first-time investments, than exits

New positions opened: 3 | Existing positions closed: 2

33% more repeat investments, than reductions

Existing positions increased: 4 | Existing positions reduced: 3

6% more funds holding

Funds holding: 16 → 17 (+1)

3.86% less ownership

Funds ownership: 5.96% → 2.1% (-3.9%)

50% less capital invested

Capital invested by funds: $142K → $70.9K (-$71.4K)

Holders
17
Holders Change
+1
Holders Change %
+6.25%
% of All Funds
0.22%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
3
Increased
4
Reduced
3
Closed
2
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Citadel Advisors
Citadel Advisors
Florida
+$34K
2
TRCT
Tower Research Capital (TRC)
New York
+$2.51K
3
Citigroup
Citigroup
New York
+$1.22K
4
Geode Capital Management
Geode Capital Management
Massachusetts
+$381
5
SS
SBI Securities
Japan
+$121

Top Sellers

Rank Fund Capital Flow
1
AFM
Anson Funds Management
Texas
-$57.1K
2
UBS Group
UBS Group
Switzerland
-$30.2K
3
Wells Fargo
Wells Fargo
California
-$500
4
JP Morgan Chase
JP Morgan Chase
New York
-$80
5
Morgan Stanley
Morgan Stanley
New York
-$74
Name Holding Trade Value Shares
Change 		Change in
Stake
Citadel Advisors
1
Citadel Advisors
Florida
$26.8K +$34K +28,069 New
UBS Group
2
UBS Group
Switzerland
$21.6K -$30.2K -24,955 -52%
Geode Capital Management
3
Geode Capital Management
Massachusetts
$15.4K +$381 +315 +2%
TRCT
4
Tower Research Capital (TRC)
New York
$3.8K +$2.51K +2,078 +109%
BlackRock
5
BlackRock
New York
$1.59K – – –
Citigroup
6
Citigroup
New York
$961 +$1.22K +1,006 New
SS
7
SBI Securities
Japan
$479 +$121 +100 +25%
Morgan Stanley
8
Morgan Stanley
New York
$226 -$74 -61 -20%
HI
9
Harbour Investments
Wisconsin
$73 – – –
Bank of America
10
Bank of America
North Carolina
$32 +$21 +17 +106%
Raymond James Financial
11
Raymond James Financial
Florida
$16 +$19 +16 New
BNP Paribas Financial Markets
12
BNP Paribas Financial Markets
France
$6 – – –
JP Morgan Chase
13
JP Morgan Chase
New York
$2 -$80 -66 -97%
AWM
14
Activest Wealth Management
Florida
$2 – – –
DB
15
Danske Bank
Denmark
$2 – – –
Group One Trading
16
Group One Trading
Illinois
$1 – – –
AFM
17
Anson Funds Management
Texas
– -$57.1K -45,716 Closed
Wells Fargo
18
Wells Fargo
California
– -$500 -400 Closed

MBIO Hedge Fund Activity: Q2 2025 in Review

17 of the 7,602 institutional investors tracked by Wall St. Rank reported a position in Mustang Bio (MBIO) for Q2 2025, worth a combined $70.9K — down 50% from $142K a quarter earlier.

Buyers outnumbered sellers: 3 funds opened new MBIO positions and 2 closed out — a net gain of 1 holder — while 4 added to existing stakes and 3 trimmed.

The largest buyer was Citadel Advisors, opening a new position worth an estimated $34K. The largest seller was Anson Funds Management, exiting entirely with an estimated $57.1K sold.

  • 17 institutional investors held Mustang Bio (MBIO) as of Q2 2025, up from 16 in Q1 2025.
  • Funds reported $70.9K of Mustang Bio stock for Q2 2025, down 50% quarter-over-quarter.
  • 3 funds opened new Mustang Bio positions in Q2 2025 and 2 closed out, a net change of +1 holder.
  • The largest Mustang Bio buyer in Q2 2025 was Citadel Advisors, an estimated $34K added.
  • The largest Mustang Bio seller in Q2 2025 was Anson Funds Management, an estimated $57.1K sold.

Based on aggregated 13F filings for Q2 2025.