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
Holders Change %
% of All Funds
Holding in Top 10
13
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$64.8M
Puts
$19.7M
Net Calls
Net Calls Change

Top Buyers

1 +$23.6M
2 +$15.6M
3 +$14.6M
4
WA
Whitebox Advisors
Minnesota
+$12.3M
5
JG
Jefferies Group
New York
+$11.2M

Top Sellers

1 -$12.7M
2 -$12.6M
3 -$12.3M
4
FS
Feinberg Stephen
-$11.1M
5
SPC
Silver Point Capital
Connecticut
-$9.98M
Name Holding Trade Value Shares
Change
Change in
Stake
1
$51.7M
2
$50.4M
3
$49.2M
4
$48.8M
5
$45.2M
6
$33M
7
$31.6M
8
$30.2M
9
$29.7M
10
$26.8M
11
$25.6M
12
$23.6M
13
$20.2M
14
$19.8M
15
$18.9M
16
$18.7M
17
$17.5M
18
$15M
19
$14.9M
20
$14.7M
21
$14M
22
$13.4M
23
$12.9M
24
$12.4M
25
$11M