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

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding in top 10

Funds holding in top 10:

less first-time investments, than exits

New positions opened: | Existing positions closed:

less funds holding

Funds holding:

6.83% less ownership

Funds ownership: 87.46%80.63% (-6.8%)

10% less repeat investments, than reductions

Existing positions increased: 53 | Existing positions reduced: 59

38% less capital invested

Capital invested by funds: $522M → $325M (-$197M)

Holders
174
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
4
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$84.6M
Puts
$8.99M
Net Calls
Net Calls Change

Top Buyers

1 +$6.33M
2 +$4.57M
3 +$3.72M
4
Jane Street
Jane Street
New York
+$3.57M
5
Morgan Stanley
Morgan Stanley
New York
+$3.15M

Top Sellers

1 -$26.8M
2 -$8.64M
3 -$7.46M
4
State Street
State Street
Massachusetts
-$6.67M
5
Vanguard Group
Vanguard Group
Pennsylvania
-$4.86M
Name Holding Trade Value Shares
Change
Change in
Stake
DS
126
DRW Securities
Illinois
$94.5K
CWM
127
CIBC World Markets
New York
$88.4K
New York State Common Retirement Fund
128
New York State Common Retirement Fund
New York
$88.1K
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
AIP
132
Ameritas Investment Partners
Nebraska
$40.1K
TRCT
133
Tower Research Capital (TRC)
New York
$29.3K
Royal Bank of Canada
134
Royal Bank of Canada
Ontario, Canada
$27K
AB
135
Amalgamated Bank
New York
$14K
TRSOTSOK
136
Teachers Retirement System of the State of Kentucky
Kentucky
$14K
US Bancorp
137
US Bancorp
Minnesota
$12K
HCA
138
Harbor Capital Advisors
Illinois
$12K
Nisa Investment Advisors
139
Nisa Investment Advisors
Missouri
$8.49K
BIG
140
Brooklyn Investment Group
New York
$8.4K
SCM
141
Sterling Capital Management
North Carolina
$6.87K
Fifth Third Bancorp
142
Fifth Third Bancorp
Ohio
$5.44K
LC
143
Lindbrook Capital
California
$4.8K
GI
144
GAMMA Investing
California
$4.46K
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
FFA
149
Farther Finance Advisors
California
$2.11K
PH
150
Pinnacle Holdings
Oklahoma
$1.63K