99 hedge funds and large institutions have $752M invested in Ambac in 2013 Q2 according to their latest regulatory filings, with 99 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

Holders
99
Holders Change
+99
Holders Change %
% of All Funds
3.23%
Holding in Top 10
15
Holding in Top 10 Change
+15
Holding in Top 10 Change %
%
% of All Funds
0.49%
New
99
Increased
Reduced
Closed
Calls
$19K
Puts
Net Calls
+$19K
Net Calls Change
+$19K
Name Market Value Shares Shares
Change
Shares
Change %
CCA
1
Canyon Capital Advisors
Texas
$50.6M 2,121,372 +2,121,372 New
CP
2
Centerbridge Partners
New York
$47.7M 2,003,108 +2,003,108 New
CIFMU
3
Childrens Investment Fund Management (UK)
United Kingdom
$47.3M 1,985,785 +1,985,785 New
YCMGA
4
York Capital Management Global Advisors
New York
$45.4M 1,906,664 +1,906,664 New
FTCM
5
Fir Tree Capital Management
New York
$45.4M 1,906,400 +1,906,400 New
Vanguard Group
6
Vanguard Group
Pennsylvania
$43M 1,804,596 +1,804,596 New
MAMNY
7
Marathon Asset Management (New York)
New York
$32.8M 1,376,402 +1,376,402 New
U
8
UBS
Switzerland
$32.6M 1,369,916 +1,369,916 New
BIT
9
BlackRock Institutional Trust
California
$27.3M 1,146,606 +1,146,606 New
BFA
10
BlackRock Fund Advisors
California
$25.2M 1,055,941 +1,055,941 New
SCI
11
Seneca Capital Investments
New York
$23.7M 994,066 +994,066 New
ACM
12
Archer Capital Management
New York
$20.3M 849,913 +849,913 New
BPM
13
Bronson Point Management
Connecticut
$19.3M 810,300 +810,300 New
SPC
14
Silver Point Capital
Connecticut
$19.3M 809,668 +809,668 New
ACG
15
Anchorage Capital Group
New York
$19.2M 805,756 +805,756 New
FS
16
Feinberg Stephen
$16.3M 685,042 +685,042 New
WA
17
Whitebox Advisors
Minnesota
$16M 670,955 +670,955 New
State Street
18
State Street
Massachusetts
$15.6M 655,800 +655,800 New
APCM
19
Arbiter Partners Capital Management
New York
$14.5M 608,298 +608,298 New
CC
20
Caspian Capital
New York
$13.4M 564,140 +564,140 New
SAM
21
Serengeti Asset Management
New York
$11.9M 500,000 +500,000 New
Deutsche Bank
22
Deutsche Bank
Germany
$10.6M 446,206 +446,206 New
AGCJ
23
Alden Global Capital (Jersey)
Jersey
$10.1M 423,900 +423,900 New
EGM
24
Espalier Global Management
New York
$9.89M 414,869 +414,869 New
KSCM
25
Kamunting Street Capital Management
Florida
$8.56M 359,370 +359,370 New