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 %
SCI
26
Seneca Capital Investments
New York
$5.4M -$6.26M -376,329 -54%
JG
27
Jefferies Group
New York
$5.31M +$2.81M +168,602 +112%
Barclays
28
Barclays
United Kingdom
$5.24M +$427K +26,683 +9%
Citadel Advisors
29
Citadel Advisors
Florida
$5.07M +$2.66M +159,724 +110%
Geode Capital Management
30
Geode Capital Management
Massachusetts
$4.89M +$204K +12,233 +4%
GP
31
GLG Partners
United Kingdom
$4.39M -$305K -18,311 -6%
CA
32
Corrado Advisors
New Jersey
$4.35M -$182K -10,960 -4%
Bank of New York Mellon
33
Bank of New York Mellon
New York
$4.17M +$100K +6,022 +2%
Renaissance Technologies
34
Renaissance Technologies
New York
$3.83M +$51.6K +3,100 +1%
GCM
35
Gator Capital Management
Florida
$3.6M +$704K +42,277 +24%
JPMorgan Chase & Co
36
JPMorgan Chase & Co
New York
$3.46M +$278K +16,683 +9%
Acadian Asset Management
37
Acadian Asset Management
Massachusetts
$3.22M +$2.5M +150,584 +351%
DMK
38
David M. Knott
$2.89M
Charles Schwab
39
Charles Schwab
California
$2.83M +$584K +35,057 +26%
GJL
40
Gendell Jeffrey L
$2.81M +$1.16M +69,764 +70%
California Public Employees Retirement System
41
California Public Employees Retirement System
California
$2.58M +$2.58M +154,800 New
GL
42
GLG LLC
New York
$2.54M -$9.5K -571 -0.4%
TCIM
43
TIAA CREF Investment Management
New York
$2.5M -$572K -34,382 -19%
BIM
44
BlackRock Investment Management
Delaware
$2.08M -$92.8K -5,575 -4%
BCM
45
Bridgeway Capital Management
Texas
$2.06M
SCM
46
Sterling Capital Management
North Carolina
$1.79M +$1.04M +62,724 +140%
RFC
47
Russell Frank Company
Washington
$1.63M +$1.63M +97,672 New
California State Teachers Retirement System (CalSTRS)
48
California State Teachers Retirement System (CalSTRS)
California
$1.37M -$4.01K -241 -0.3%
AllianceBernstein
49
AllianceBernstein
Tennessee
$1.28M
SG Americas Securities
50
SG Americas Securities
New York
$1.24M +$1.16M +70,007 +1,568%