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Ambac
AMBC

Overview Fund Activity

146 hedge funds and large institutions have $262M invested in Ambac in 2025 Q2 according to their latest regulatory filings, with 32 funds opening new positions, 48 increasing their positions, 48 reducing their positions, and 59 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
146
Holders Change
-28
Holders Change %
-16.09%
% of All Funds
1.96%
Holding in Top 10
6
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+50%
% of All Funds
0.08%
New
32
Increased
48
Reduced
48
Closed
59
Calls
$69.4M
Puts
$4.38M
Net Calls
+$65M
Net Calls Change
-$10.5M

Top Buyers

1
CGIC
1
Continental General Insurance Company
Texas
$8.65M
2
GJL
2
Gendell Jeffrey L
$8.51M
3
Millennium Management
3
Millennium Management
New York
$7.07M
4
Marshall Wace
4
Marshall Wace
United Kingdom
$4.6M
5
PGCM
5
Prescott Group Capital Management
Oklahoma
$6.22M

Top Sellers

1
WSL
1
Western Standard LLC
California
$0
2
RP
2
Repertoire Partners
New York
$5.12M
3
American Century Companies
3
American Century Companies
Missouri
$3.11M
4
Morgan Stanley
4
Morgan Stanley
New York
$3.25M
5
BlackRock
5
BlackRock
New York
$32.6M
Name Holding Trade Value Shares
Change 		Shares
Change %
Russell Investments Group
126
Russell Investments Group
United Kingdom
$4.89K +$3.99K +562 +443%
SS
127
SBI Securities
Japan
$3.12K +$3.05K +430 +4,300%
CIAM
128
Caitong International Asset Management
Hong Kong
$2.91K +$2.82K +397 +3,054%
BIG
129
Brooklyn Investment Group
New York
$2.15K -$4.67K -657 -68%
CAL
130
Capital Analysts LLC
Pennsylvania
$2K – – –
CA
131
CoreCap Advisors
Michigan
$1.89K +$1.89K +266 New
US Bancorp
132
US Bancorp
Minnesota
$1.61K -$8.13K -1,145 -83%
IA
133
IFP Advisors
Florida
$1.32K -$105 – –
DPW
134
DiNuzzo Private Wealth
Pennsylvania
$1.26K – – –
GIM
135
Glenmede Investment Management
Pennsylvania
$1.14K +$1.14K +161 New
AF
136
Allworth Financial
California
$973 +$767 +108 +372%
S
137
SignatureFD
Georgia
$824 +$824 +116 New
AAM
138
Advisors Asset Management
Colorado
$724 +$724 +102 New
PNC Financial Services Group
139
PNC Financial Services Group
Pennsylvania
$718 +$718 +101 New
EWA
140
EverSource Wealth Advisors
Alabama
$362 +$362 +51 New
TWD
141
True Wealth Design
Ohio
$249 +$157 +22 +169%
RIL
142
Rothschild Investment LLC
Illinois
$227 -$816 -115 -78%
LWMI
143
Legacy Wealth Management (Idaho)
Idaho
$178 – – –
LIS
144
Legacy Investment Solutions
Idaho
$178 +$178 +25 New
PA
145
Parallel Advisors
California
$107 +$107 +15 New
National Bank of Canada
146
National Bank of Canada
Quebec, Canada
$50 +$50 +7 New
WSL
147
Western Standard LLC
California
– -$6.12M -699,352 Closed
Arrowstreet Capital
148
Arrowstreet Capital
Massachusetts
– -$1.28M -145,901 Closed
Balyasny Asset Management
149
Balyasny Asset Management
Illinois
– -$1.04M -118,765 Closed
OQS
150
Occudo Quantitative Strategies
Florida
– -$991K -114,575 Closed
4 5
6
7 8