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American Superconductor
AMSC

Name Holding Trade Value Shares
Change 		Change in
Stake
BIT
1
BlackRock Institutional Trust
California
$4.19M +$3.99M +158,557 New
Vanguard Group
2
Vanguard Group
Pennsylvania
$3.77M +$3.6M +142,981 New
BFA
3
BlackRock Fund Advisors
California
$3M +$2.87M +113,831 New
Invesco
4
Invesco
Georgia
$2.33M +$2.22M +88,292 New
IIM
5
Ironwood Investment Management
Massachusetts
$1.99M +$1.9M +75,516 New
State Street
6
State Street
Massachusetts
$1.89M +$1.8M +71,455 New
Northern Trust
7
Northern Trust
Illinois
$1.51M +$1.44M +57,295 New
Dimensional Fund Advisors
8
Dimensional Fund Advisors
Texas
$1.11M +$1.06M +41,929 New
Jacobs Levy Equity Management
9
Jacobs Levy Equity Management
New Jersey
$1.09M +$1.04M +41,380 New
California Public Employees Retirement System
10
California Public Employees Retirement System
California
$980K +$935K +37,119 New
BA
11
BlackRock Advisors
Delaware
$972K +$927K +36,813 New
TC
12
TFS Capital
Pennsylvania
$826K +$787K +31,269 New
SCM
13
Seamans Capital Management
Massachusetts
$800K +$763K +30,300 New
AAP
14
Ardsley Advisory Partners
Connecticut
$792K +$756K +30,000 New
Geode Capital Management
15
Geode Capital Management
Massachusetts
$672K +$641K +25,450 New
Brown Advisory
16
Brown Advisory
Maryland
$619K +$591K +23,461 New
SCM
17
Scopia Capital Management
New York
$579K +$552K +21,937 New
Bank of New York Mellon
18
Bank of New York Mellon
New York
$567K +$541K +21,479 New
TCIM
19
TIAA CREF Investment Management
New York
$470K +$448K +17,788 New
BIM
20
BlackRock Investment Management
Delaware
$402K +$384K +15,231 New
First Manhattan
21
First Manhattan
New York
$384K +$361K +14,340 New
PPA
22
Parametric Portfolio Associates
Washington
$372K +$355K +14,100 New
Renaissance Technologies
23
Renaissance Technologies
New York
$366K +$350K +13,880 New
Goldman Sachs
24
Goldman Sachs
New York
$358K +$341K +13,554 New
First Trust Advisors
25
First Trust Advisors
Illinois
$352K +$336K +13,325 New
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