122 hedge funds and large institutions have $833M invested in Ambac in 2015 Q1 according to their latest regulatory filings, with 15 funds opening new positions, 39 increasing their positions, 35 reducing their positions, and 17 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
122
Holders Change
-2
Holders Change %
-1.61%
% of All Funds
3.25%
Holding in Top 10
8
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+14.29%
% of All Funds
0.21%
New
15
Increased
39
Reduced
35
Closed
17
Calls
$22.3M
Puts
$13.7M
Net Calls
+$8.62M
Net Calls Change
-$32M
Name Holding Trade Value Shares
Change
Shares
Change %
EMG
126
Ellington Management Group
Connecticut
-$794K -32,400 Closed
HI
127
HBK Investments
Texas
-$685K -27,977 Closed
D.E. Shaw & Co
128
D.E. Shaw & Co
New York
-$659K -26,914 Closed
AL
129
Airain Ltd
Guernsey
-$528K -21,544 Closed
Arrowstreet Capital
130
Arrowstreet Capital
Massachusetts
-$367K -14,968 Closed
SCM
131
Stevens Capital Management
Pennsylvania
-$354K -14,467 Closed
Nomura Holdings
132
Nomura Holdings
Japan
-$317K -12,759 Closed
DC
133
Deere & Company
Illinois
-$258K -10,533 Closed
EWM
134
Edge Wealth Management
New York
-$246K -10,000 Closed
SCA
135
Secor Capital Advisors
New York
-$202K -8,262 Closed
TC
136
TradeLink Capital
Illinois
-$54K -2,200 Closed
FMA
137
FNY Managed Accounts
New York
-$19.6K -800 Closed
RC
138
RegentAtlantic Capital
New Jersey
-$1.74K -71 Closed
BBHC
139
Brown Brothers Harriman & Co
New York
-$1K -50 Closed