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MBIA
MBI

121 hedge funds and large institutions have $183M invested in MBIA in 2025 Q3 according to their latest regulatory filings, with 23 funds opening new positions, 34 increasing their positions, 38 reducing their positions, and 13 closing their positions.

New
Increased
Maintained
Reduced
Closed

461% more call options, than puts

Call options by funds: $15.1M | Put options by funds: $2.69M

80% more capital invested

Capital invested by funds: $102M → $183M (+$81.5M)

77% more first-time investments, than exits

New positions opened: 23 | Existing positions closed: 13

9% more funds holding

Funds holding: 111 → 121 (+10)

2.22% more ownership

Funds ownership: 46.5% → 48.72% (+2.2%)

11% less repeat investments, than reductions

Existing positions increased: 34 | Existing positions reduced: 38

Holders
121
Holders Change
+10
Holders Change %
+9.01%
% of All Funds
1.59%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
% of All Funds
0.01%
New
23
Increased
34
Reduced
38
Closed
13
Calls
$15.1M
Puts
$2.69M
Net Calls
+$12.4M
Net Calls Change
+$12.3M

Top Buyers

Rank Fund Capital Flow
1
KBG
Kahn Brothers Group
New York
+$6.53M
2
UBS Group
UBS Group
Switzerland
+$2.74M
3
Jane Street
Jane Street
New York
+$1.42M
4
PFMOSF
Philadelphia Financial Management of San Francisco
California
+$1.34M
5
Simplex Trading
Simplex Trading
Illinois
+$1.32M

Top Sellers

Rank Fund Capital Flow
1
Marshall Wace
Marshall Wace
United Kingdom
-$1.81M
2
FCH
Freestone Capital Holdings
Washington
-$1.32M
3
V
ValueWorks
New York
-$1M
4
Morgan Stanley
Morgan Stanley
New York
-$893K
5
Two Sigma Investments
Two Sigma Investments
New York
-$487K
Name Holding Trade Value Shares
Change 		Change in
Stake
Optiver Holding
101
Optiver Holding
Netherlands
$2.8K +$2.38K +376 New
W
102
WealthCollab
Washington
$2.27K – – –
EB
103
Eastern Bank
Massachusetts
$2.23K – – –
AAP
104
Arax Advisory Partners
Colorado
$1.94K +$805 +127 +95%
MCM
105
MAI Capital Management
Ohio
$1.86K – – –
US Bancorp
106
US Bancorp
Minnesota
$1.39K +$304 +48 +35%
PS
107
Principal Securities
Iowa
$1.21K +$919 +145 +853%
FIA
108
FNY Investment Advisers
New York
$1K -$190 -30 -17%
Northwestern Mutual Wealth Management
109
Northwestern Mutual Wealth Management
Wisconsin
$685 – – –
EWA
110
EverSource Wealth Advisors
Alabama
$611 – – –
CPG
111
Cornerstone Planning Group
New Jersey
$500 – – –
PNC Financial Services Group
112
PNC Financial Services Group
Pennsylvania
$484 +$133 +21 +48%
Rockefeller Capital Management
113
Rockefeller Capital Management
New York
$425 +$361 +57 New
LFG
114
Larson Financial Group
Missouri
$209 – – –
PA
115
Parallel Advisors
California
$194 – – –
ASN
116
Advisory Services Network
Georgia
$112 +$95 +15 New
WANY
117
Wealthspire Advisors (New York)
New York
$82 +$70 +11 New
FFA
118
Farther Finance Advisors
California
$15 – – –
SS
119
SBI Securities
Japan
$15 – – –
HNB
120
Huntington National Bank
Ohio
$7 – – –
Marshall Wace
121
Marshall Wace
United Kingdom
– -$1.81M -416,964 Closed
SFI
122
Susquehanna Fundamental Investments
Pennsylvania
– -$307K -70,788 Closed
TI
123
Trexquant Investment
Connecticut
– -$274K -63,067 Closed
FNBT
124
FineMark National Bank & Trust
Florida
– -$217K -50,000 Closed
XT
125
XTX Topco
Cayman Islands
– -$208K -47,829 Closed
2 3 4
5
6

MBI Hedge Fund Activity: Q3 2025 in Review

121 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in MBIA (MBI) for Q3 2025, worth a combined $183M — up 80% from $102M a quarter earlier.

Buyers outnumbered sellers: 23 funds opened new MBI positions and 13 closed out — a net gain of 10 holders — while 34 added to existing stakes and 38 trimmed.

The largest buyer was Kahn Brothers Group, opening a new position worth an estimated $6.53M. The largest seller was Marshall Wace, exiting entirely with an estimated $1.81M sold.

  • 121 institutional investors held MBIA (MBI) as of Q3 2025, up from 111 in Q2 2025.
  • Funds reported $183M of MBIA stock for Q3 2025, up 80% quarter-over-quarter.
  • 23 funds opened new MBIA positions in Q3 2025 and 13 closed out, a net change of +10 holders.
  • The largest MBIA buyer in Q3 2025 was Kahn Brothers Group, an estimated $6.53M added.
  • The largest MBIA seller in Q3 2025 was Marshall Wace, an estimated $1.81M sold.

Based on aggregated 13F filings for Q3 2025.