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Protolabs

Name Holding Trade Value Shares
Change
Change in
Stake
Group One Trading
201
Group One Trading
Illinois
-$878K -11,333 Closed
RI
202
Redwood Investments
Massachusetts
-$851K -11,139 Closed
ProShare Advisors
203
ProShare Advisors
Maryland
-$824K -10,781 Closed
VKH
204
Virtu KCG Holdings
New York
-$612K -8,005 Closed
CIBC World Market
205
CIBC World Market
Ontario, Canada
-$492K -6,436 Closed
OAM
206
Oberweis Asset Management
Illinois
-$435K -5,700 Closed
OC
207
Oppenheimer & Co
New York
-$319K -4,173 Closed
First Manhattan
208
First Manhattan
New York
-$275K -3,600 Closed
Asset Management One
209
Asset Management One
Japan
-$254K -3,330 Closed
SG Americas Securities
210
SG Americas Securities
New York
-$216K -2,822 Closed
Comerica Bank
211
Comerica Bank
Texas
-$209K -2,730 Closed
Natixis Advisors
212
Natixis Advisors
Massachusetts
-$204K -2,671 Closed
HMS
213
Hanseatic Management Services
New Mexico
-$58K -759 Closed
AA
214
AlphaMark Advisors
Kentucky
-$23K -300 Closed
ST
215
Spot Trading
Illinois
-$20K -264 Closed
TWA
216
TCI Wealth Advisors
Arizona
-$6K -76 Closed