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 %
Barclays
26
Barclays
United Kingdom
$7.21M -$57.3K -2,386 -0.8%
GP
27
GLG Partners
United Kingdom
$6.83M +$2.69M +111,160 +65%
Geode Capital Management
28
Geode Capital Management
Massachusetts
$6.81M +$581K +24,014 +9%
CA
29
Corrado Advisors
New Jersey
$6.6M -$483K -19,950 -7%
Susquehanna International Group
30
Susquehanna International Group
Pennsylvania
$6.16M -$5.43M -224,503 -47%
Bank of New York Mellon
31
Bank of New York Mellon
New York
$5.92M +$231K +9,566 +4%
DKCM
32
Davidson Kempner Capital Management
New York
$5.56M -$498K -20,600 -8%
Renaissance Technologies
33
Renaissance Technologies
New York
$5.5M -$6.88M -284,400 -56%
OMC
34
Overbrook Management Corp
New York
$4.72M
JPMorgan Chase & Co
35
JPMorgan Chase & Co
New York
$4.62M +$3.55M +146,726 +331%
TCIM
36
TIAA CREF Investment Management
New York
$4.47M +$40.6K +1,676 +0.9%
GCM
37
Gator Capital Management
Florida
$4.21M +$9.95K +411 +0.2%
DMK
38
David M. Knott
$4.2M
GL
39
GLG LLC
New York
$3.7M -$436K -18,022 -11%
JG
40
Jefferies Group
New York
$3.65M +$3.33M +137,535 +1,051%
LPU
41
Lansdowne Partners (UK)
United Kingdom
$3.54M -$3.55M -146,693 -50%
Citadel Advisors
42
Citadel Advisors
Florida
$3.5M +$22.4K +924 +0.6%
Prudential Financial
43
Prudential Financial
New Jersey
$3.34M +$3.34M +137,800 New
Charles Schwab
44
Charles Schwab
California
$3.26M +$334K +13,791 +11%
BIM
45
BlackRock Investment Management
Delaware
$3.16M -$42.8K -1,767 -1%
BCM
46
Bridgeway Capital Management
Texas
$3M +$968K +40,000 +48%
Invesco
47
Invesco
Georgia
$2.75M +$2.75M +113,647 New
VAM
48
Visium Asset Management
New York
$2.44M -$7.26K -300 -0.3%
GJL
49
Gendell Jeffrey L
$2.4M -$609K -25,149 -20%
NCCM
50
Nine Chapters Capital Management
New Jersey
$2.07M +$590K +24,400 +40%