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 %
PG
76
PEAK6 Group
Illinois
$404K -$809K -33,373 -67%
ST
77
Spot Trading
Illinois
$379K +$111K +4,593 +42%
AQR Capital Management
78
AQR Capital Management
Connecticut
$378K -$422K -17,427 -53%
GMIM
79
General Motors Investment Management
New York
$369K -$116K -4,790 -24%
KAM
80
Kazazian Asset Management
Florida
$348K -$217K -8,960 -38%
Two Sigma Investments
81
Two Sigma Investments
New York
$341K +$341K +14,100 New
CSS
82
Cubist Systematic Strategies
Connecticut
$324K +$324K +13,388 New
ProShare Advisors
83
ProShare Advisors
Maryland
$318K +$89K +3,679 +39%
FNBT
84
FineMark National Bank & Trust
Florida
$315K
VIA
85
Vident Investment Advisory
Georgia
$284K +$284K +11,754 New
HIP
86
Hatteras Investment Partners
North Carolina
$268K -$129K -5,321 -32%
CEP
87
Chicago Equity Partners
Illinois
$263K +$263K +10,850 New
PP
88
PDT Partners
New York
$236K +$236K +9,737 New
PAM
89
Panagora Asset Management
Massachusetts
$221K -$67.7K -2,796 -23%
RG
90
Rathbones Group
United Kingdom
$218K
UBS Group
91
UBS Group
Switzerland
$212K +$75.7K +3,138 +55%
Citigroup
92
Citigroup
New York
$193K -$131K -5,436 -40%
QT
93
Quantbot Technologies
New York
$185K +$93.6K +3,876 +102%
Legal & General Group
94
Legal & General Group
United Kingdom
$155K
Parallax Volatility Advisers
95
Parallax Volatility Advisers
California
$138K -$1.36M -55,980 -91%
Canada Life
96
Canada Life
Manitoba, Canada
$121K
Walleye Trading
97
Walleye Trading
New York
$118K -$278K -11,519 -70%
SG Americas Securities
98
SG Americas Securities
New York
$108K +$7.35K +304 +7%
TRCT
99
Tower Research Capital (TRC)
New York
$93K +$93K +3,843 +384,300%
PCM
100
Prelude Capital Management
New York
$73K +$73K +3,011 New