115 hedge funds and large institutions have $592M invested in Ambac in 2013 Q3 according to their latest regulatory filings, with 34 funds opening new positions, 39 increasing their positions, 25 reducing their positions, and 18 closing their positions.

Holders
115
Holders Change
+16
Holders Change %
+16.16%
% of All Funds
3.73%
Holding in Top 10
12
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-20%
% of All Funds
0.39%
New
34
Increased
39
Reduced
25
Closed
18
Calls
$5.15M
Puts
$843K
Net Calls
+$4.31M
Net Calls Change
+$4.29M
Name Market Value Shares Shares
Change
Shares
Change %
CCA
1
Canyon Capital Advisors
Texas
$40.1M 2,211,172 +89,800 +4%
CP
2
Centerbridge Partners
New York
$36.3M 2,003,108
CIFMU
3
Childrens Investment Fund Management (UK)
United Kingdom
$36M 1,985,785
FTCM
4
Fir Tree Capital Management
New York
$34.6M 1,906,400
Vanguard Group
5
Vanguard Group
Pennsylvania
$33.9M 1,870,529 +65,933 +4%
MAMNY
6
Marathon Asset Management (New York)
New York
$32.4M 1,787,895 +411,493 +30%
YCMGA
7
York Capital Management Global Advisors
New York
$25.5M 1,406,664 -500,000 -26%
BIT
8
BlackRock Institutional Trust
California
$23.4M 1,289,999 +143,393 +13%
AGCJ
9
Alden Global Capital (Jersey)
Jersey
$22.1M 1,218,800 +794,900 +188%
BFA
10
BlackRock Fund Advisors
California
$21.5M 1,187,095 +131,154 +12%
FS
11
Feinberg Stephen
$21.1M 1,164,442 +479,400 +70%
APCM
12
Arbiter Partners Capital Management
New York
$14.5M 801,298 +193,000 +32%
WA
13
Whitebox Advisors
Minnesota
$13.2M 727,406 +56,451 +8%
State Street
14
State Street
Massachusetts
$13M 715,539 +59,739 +9%
SCI
15
Seneca Capital Investments
New York
$12.1M 665,774 -328,292 -33%
RA
16
Royce & Associates
New York
$11.8M 649,000 +649,000 New
MCM
17
Maltese Capital Management
New York
$11.7M 642,700 +642,700 New
Northern Trust
18
Northern Trust
Illinois
$10.8M 594,800 +357,286 +150%
BP
19
Boston Provident
New Jersey
$10.4M 574,178 +574,178 New
SPC
20
Silver Point Capital
Connecticut
$9.98M 550,037 -259,631 -32%
JPMorgan Chase & Co
21
JPMorgan Chase & Co
New York
$9.89M 545,420 +463,768 +568%
KCM
22
Key Colony Management
Arkansas
$8.99M 495,810 +464,010 +1,459%
Fidelity Investments
23
Fidelity Investments
Massachusetts
$8.98M 495,160 +445,160 +890%
SAM
24
Serengeti Asset Management
New York
$8.34M 460,000 -40,000 -8%
ACM
25
Archer Capital Management
New York
$7.81M 430,601 -419,312 -49%