129 hedge funds and large institutions have $830M invested in Ambac in 2013 Q4 according to their latest regulatory filings, with 39 funds opening new positions, 40 increasing their positions, 32 reducing their positions, and 23 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
129
Holders Change
+14
Holders Change %
+12.17%
% of All Funds
3.75%
Holding in Top 10
13
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+8.33%
% of All Funds
0.38%
New
39
Increased
40
Reduced
32
Closed
23
Calls
$64.8M
Puts
$19.7M
Net Calls
+$45.1M
Net Calls Change
+$40.8M
Name Holding Trade Value Shares
Change
Shares
Change %
SAM
26
Serengeti Asset Management
New York
$9.82M -$1.47M -60,000 -13%
GJL
27
Gendell Jeffrey L
$8.68M +$1.16M +47,386 +15%
VCM
28
Venor Capital Management
New York
$8.5M +$8.5M +345,871 New
CA
29
Claar Advisors
New York
$8.49M +$8.49M +345,500 New
HT
30
HAP Trading
New York
$7.84M +$7.84M +319,000 New
GI
31
GLG Inc
New York
$6.27M +$6.27M +255,185 New
BTS
32
BB&T Securities
Virginia
$6.16M +$516K +2,100 +9%
KSCM
33
Kamunting Street Capital Management
Florida
$5.87M -$3.19M -130,000 -35%
PCM
34
Panning Capital Management
New York
$5.84M +$5.84M +237,584 New
TCIM
35
TIAA CREF Investment Management
New York
$5.77M +$7.86K +320 +0.1%
Bank of New York Mellon
36
Bank of New York Mellon
New York
$5.39M +$333K +13,570 +7%
Geode Capital Management
37
Geode Capital Management
Massachusetts
$5.32M +$93.9K +3,824 +2%
TA
38
Teachers Advisors
New York
$4.93M +$3.46M +140,990 +236%
Susquehanna International Group
39
Susquehanna International Group
Pennsylvania
$4.64M +$4.64M +188,850 New
NPGCU
40
Napier Park Global Capital (US)
New York
$4.57M +$4.57M +186,093 New
SCM
41
SkyTop Capital Management
New Jersey
$4.42M +$4.42M +180,010 New
LOM
42
Loeb Offshore Management
New York
$4.19M +$3.58M +145,844 +590%
DMK
43
David M. Knott
$4.01M +$3.39M +138,000 +543%
SCI
44
Seneca Capital Investments
New York
$3.72M -$12.6M -514,274 -77%
BIM
45
BlackRock Investment Management
Delaware
$3.59M -$120K -4,868 -3%
AQR Capital Management
46
AQR Capital Management
Connecticut
$3.19M +$1.48M +60,100 +86%
PAM
47
Panagora Asset Management
Massachusetts
$3.03M -$754K -30,709 -20%
MC
48
Menta Capital
California
$2.89M +$2.89M +117,500 New
Bessemer Group
49
Bessemer Group
New Jersey
$2.64M +$54.8K +2,230 +2%
Charles Schwab
50
Charles Schwab
California
$2.61M +$248K +10,098 +11%