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Protolabs
PRLB

Overview Fund Activity

196 hedge funds and large institutions have $865M invested in Protolabs in 2025 Q2 according to their latest regulatory filings, with 32 funds opening new positions, 64 increasing their positions, 73 reducing their positions, and 21 closing their positions.

Holders
196
Holders Change
+8
Holders Change %
+4.26%
% of All Funds
2.63%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
32
Increased
64
Reduced
73
Closed
21
Calls
$2.28M
Puts
$4K
Net Calls
+$2.28M
Net Calls Change
+$417K

Top Buyers

1
RCMNY
1
Rubric Capital Management (New York)
New York
$41.4M
2
Millennium Management
2
Millennium Management
New York
$6.21M
3
NL
3
Nuveen LLC
North Carolina
$7.28M
4
Citadel Advisors
4
Citadel Advisors
Florida
$4.96M
5
CSS
5
Cubist Systematic Strategies
Connecticut
$2.75M

Top Sellers

1
Wellington Management Group
1
Wellington Management Group
Massachusetts
$0
2
First Trust Advisors
2
First Trust Advisors
Illinois
$4.13M
3
BlackRock
3
BlackRock
New York
$146M
4
D.E. Shaw & Co
4
D.E. Shaw & Co
New York
$18.1M
5
TI
5
Trexquant Investment
Connecticut
$1.05M
Name Market Value Shares Shares
Change 		Shares
Change %
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
201
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
– – -31,700 Closed
GCM
202
Graham Capital Management
Connecticut
– – -20,147 Closed
Mackenzie Financial
203
Mackenzie Financial
Ontario, Canada
– – -14,333 Closed
QC
204
Quadrature Capital
United Kingdom
– – -13,122 Closed
CF
205
Corebridge Financial
Texas
– – -12,838 Closed
MAM
206
Meeder Asset Management
Ohio
– – -10,096 Closed
IC
207
IEQ Capital
California
– – -8,559 Closed
Man Group
208
Man Group
United Kingdom
– – -8,278 Closed
KBC Group
209
KBC Group
Belgium
– – -1,541 Closed
ACM
210
Aster Capital Management
United Arab Emirates
– – -888 Closed
ACM
211
Aquatic Capital Management
Illinois
– – -316 Closed
Acadian Asset Management
212
Acadian Asset Management
Massachusetts
– – -257 Closed
Group One Trading
213
Group One Trading
Illinois
– – -249 Closed
CCM
214
Coldstream Capital Management
Washington
– – -124 Closed
CYG
215
Clean Yield Group
Vermont
– – -53 Closed
PA
216
PSI Advisors
Florida
– – -50 Closed
SC
217
Stephens Consulting
Michigan
– – -10 Closed
Simplex Trading
218
Simplex Trading
Illinois
– – – –
Wolverine Trading
219
Wolverine Trading
Illinois
– – – –
PEAK6
220
PEAK6
Illinois
– – – –
Walleye Trading
221
Walleye Trading
New York
– – – –
5 6 7 8
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