125 hedge funds and large institutions have $579M invested in Ambac in 2015 Q2 according to their latest regulatory filings, with 21 funds opening new positions, 45 increasing their positions, 39 reducing their positions, and 17 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
125
Holders Change
+3
Holders Change %
+2.46%
% of All Funds
3.37%
Holding in Top 10
6
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-25%
% of All Funds
0.16%
New
21
Increased
45
Reduced
39
Closed
17
Calls
$34.8M
Puts
$13M
Net Calls
+$21.8M
Net Calls Change
+$13.2M
Name Holding Trade Value Shares
Change
Shares
Change %
BNP Paribas Financial Markets
101
BNP Paribas Financial Markets
France
$129K +$105K +6,332 +451%
Canada Life
102
Canada Life
Manitoba, Canada
$83K
TRCT
103
Tower Research Capital (TRC)
New York
$55K -$9.32K -557 -14%
Ohio Public Employees Retirement System (OPERS)
104
Ohio Public Employees Retirement System (OPERS)
Ohio
$37K +$37K +2,209 New
FMA
105
FNY Managed Accounts
New York
$33.3K +$33.3K +2,000 New
Simplex Trading
106
Simplex Trading
Illinois
$30K +$30K +1,827 New
Teacher Retirement System of Texas
107
Teacher Retirement System of Texas
Texas
$29K +$6.42K +388 +28%
Citigroup
108
Citigroup
New York
$26K -$109K -6,454 -81%
CTC
109
Central Trust Company
Missouri
$22K
CAW
110
Cornerstone Advisors (Washington)
Washington
$21K -$21.1K -1,280 -50%
LTFS
111
Ladenburg Thalmann Financial Services
Florida
$17K
BlackRock
112
BlackRock
New York
$16K -$1.61K -96 -9%
DBT
113
Dubuque Bank & Trust
Iowa
$15K +$15K +887 New
BC
114
Bartlett & Co
Ohio
$14K
GXMC
115
Global X Management Company
New York
$10K -$4.4K -255 -31%
Bessemer Group
116
Bessemer Group
New Jersey
$7K
FFC
117
First Financial Corp
Indiana
$6K
Bank of Montreal
118
Bank of Montreal
Ontario, Canada
$5K
Zurich Cantonal Bank
119
Zurich Cantonal Bank
Switzerland
$4K
PNC Financial Services Group
120
PNC Financial Services Group
Pennsylvania
$4K +$1.66K +111 +71%
WCBA
121
Weaver C. Barksdale & Associates
Tennessee
$4K +$2.12K +141 +113%
MFS
122
MSI Financial Services
Massachusetts
$3K
CPA
123
Cowen Prime Advisors
New York
$3K
CFS
124
Commonwealth Financial Services
West Virginia
$3K
Manulife (Manufacturers Life Insurance)
125
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$447 -$28 -1,709 -6%