116 hedge funds and large institutions have $520M invested in Ambac in 2018 Q1 according to their latest regulatory filings, with 17 funds opening new positions, 29 increasing their positions, 37 reducing their positions, and 19 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
116
Holders Change
-2
Holders Change %
-1.69%
% of All Funds
2.66%
Holding in Top 10
6
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.14%
New
17
Increased
29
Reduced
37
Closed
19
Calls
$14.7M
Puts
$4.28M
Net Calls
+$10.5M
Net Calls Change
-$14.2M
Name Holding Trade Value Shares
Change
Shares
Change %
Dimensional Fund Advisors
1
Dimensional Fund Advisors
Texas
$40.3M
RCM
2
Raging Capital Management
New Jersey
$35.3M
Fidelity Investments
3
Fidelity Investments
Massachusetts
$35.1M
EC
4
EJF Capital
Virginia
$34.8M
BlackRock
5
BlackRock
New York
$33.3M -$425K -27,093 -1%
Vanguard Group
6
Vanguard Group
Pennsylvania
$32.4M -$1.7M -108,394 -5%
SC
7
Sessa Capital
New York
$31.3M
Goldman Sachs
8
Goldman Sachs
New York
$28.6M -$90K -5,737 -0.3%
Bank of America
9
Bank of America
North Carolina
$27.9M +$3.53M +224,993 +14%
GJL
10
Gendell Jeffrey L
$16.9M +$5.98M +381,084 +55%
State Street
11
State Street
Massachusetts
$14.8M -$50.8K -3,241 -0.3%
Morgan Stanley
12
Morgan Stanley
New York
$13.8M +$11.3M +719,097 +450%
Citigroup
13
Citigroup
New York
$12.9M -$72K -4,591 -0.6%
CP
14
Centerbridge Partners
New York
$12M
RCMNY
15
Rubric Capital Management (New York)
New York
$8.83M +$2.35M +150,000 +36%
Northern Trust
16
Northern Trust
Illinois
$8.55M +$35.1K +2,238 +0.4%
Charles Schwab
17
Charles Schwab
California
$7.37M +$842K +53,714 +13%
DG
18
Delek Group
Israel
$6.75M
WA
19
Whitebox Advisors
Minnesota
$6.51M +$6.51M +415,100 New
Geode Capital Management
20
Geode Capital Management
Massachusetts
$6.32M +$123K +7,857 +2%
LSV Asset Management
21
LSV Asset Management
Illinois
$5.88M -$86.2K -5,500 -1%
Deutsche Bank
22
Deutsche Bank
Germany
$5.77M -$412K -26,302 -7%
GCM
23
Gator Capital Management
Florida
$5.2M +$1.48M +94,442 +40%
Renaissance Technologies
24
Renaissance Technologies
New York
$4.85M +$412K +26,300 +9%
XSC
25
X-Square Capital
Puerto Rico
$4.81M +$263K +16,749 +6%