174 hedge funds and large institutions have $325M invested in Ambac in 2025 Q1 according to their latest regulatory filings, with 35 funds opening new positions, 53 increasing their positions, 59 reducing their positions, and 38 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
174
Holders Change
-6
Holders Change %
-3.33%
% of All Funds
2.36%
Holding in Top 10
4
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+100%
% of All Funds
0.05%
New
35
Increased
53
Reduced
59
Closed
38
Calls
$84.6M
Puts
$8.99M
Net Calls
+$75.6M
Net Calls Change
+$23.5M
Name Holding Trade Value Shares
Change
Shares
Change %
DS
126
DRW Securities
Illinois
$94.5K +$94.5K +10,800 New
CWM
127
CIBC World Markets
New York
$88.4K +$88.4K +10,101 New
New York State Common Retirement Fund
128
New York State Common Retirement Fund
New York
$88K
Zurich Cantonal Bank
129
Zurich Cantonal Bank
Switzerland
$86K
PFSRSONJ
130
Police & Firemen's Retirement System of New Jersey
New Jersey
$80.5K
A
131
AlphaQuest
New York
$60.8K +$60.8K +6,947 New
AIP
132
Ameritas Investment Partners
Nebraska
$40.1K
TRCT
133
Tower Research Capital (TRC)
New York
$29.3K +$5.83K +666 +25%
Royal Bank of Canada
134
Royal Bank of Canada
Ontario, Canada
$27K -$26.7K -2,975 -50%
AB
135
Amalgamated Bank
New York
$14K -$111K -12,373 -89%
TRSOTSOK
136
Teachers Retirement System of the State of Kentucky
Kentucky
$14K -$93.6K -10,700 -87%
US Bancorp
137
US Bancorp
Minnesota
$12K +$5.96K +681 +99%
HCA
138
Harbor Capital Advisors
Illinois
$12K +$3.36K +386 +39%
Nisa Investment Advisors
139
Nisa Investment Advisors
Missouri
$8.49K -$271 -31 -3%
BIG
140
Brooklyn Investment Group
New York
$8.4K +$5.32K +608 +173%
SCM
141
Sterling Capital Management
North Carolina
$6.87K -$5.29K -605 -44%
Fifth Third Bancorp
142
Fifth Third Bancorp
Ohio
$5.44K +$1.69K +193 +45%
LC
143
Lindbrook Capital
California
$4.8K -$735 -84 -13%
GI
144
GAMMA Investing
California
$4.46K -$8.92K -1,019 -67%
WAG
145
Wiser Advisor Group
Arizona
$4.38K
Barrow, Hanley, Mewhinney & Strauss
146
Barrow, Hanley, Mewhinney & Strauss
Texas
$3.94K
CAL
147
Capital Analysts LLC
Pennsylvania
$3K
SW
148
SVB Wealth
Massachusetts
$2.46K +$2.46K +281 New
FFA
149
Farther Finance Advisors
California
$2.11K +$1.38K +167 +188%
PH
150
Pinnacle Holdings
Oklahoma
$1.63K