SIMPLEX TRADING, LLC - PROTO LABS INC ownership

PROTO LABS INC's ticker is PRLB and the CUSIP is 743713109. A total of 181 filers reported holding PROTO LABS INC in Q2 2015. The put-call ratio across all filers is 1.92 and the average weighting 0.2%.

Quarter-by-quarter ownership
SIMPLEX TRADING, LLC ownership history of PROTO LABS INC
ValueSharesWeighting
Q1 2024$41
-50.6%
1,161
-46.1%
0.00%
Q4 2023$83
-99.9%
2,154
+44.5%
0.00%
Q2 2022$71,000
-70.7%
1,491
-67.5%
0.00%
Q1 2022$242,000
+868.0%
4,590
+829.1%
0.00%
Q4 2021$25,000
-97.7%
494
-95.8%
0.00%
-100.0%
Q3 2021$1,081,000
+0.7%
11,695
-0.1%
0.00%0.0%
Q2 2021$1,074,000
+31.3%
11,708
+74.1%
0.00%0.0%
Q1 2021$818,000
+570.5%
6,725
+741.7%
0.00%
Q4 2020$122,000
-77.0%
799
-80.5%
0.00%
-100.0%
Q3 2020$531,000
+63.4%
4,106
+41.7%
0.00%0.0%
Q2 2020$325,000
+150.0%
2,897
+68.4%
0.00%
Q1 2020$130,000
+68.8%
1,720
+126.6%
0.00%
Q4 2019$77,000
+60.4%
759
+64.3%
0.00%
Q1 2019$48,000
-76.7%
462
-74.7%
0.00%
-100.0%
Q4 2018$206,000
+21.2%
1,829
+27.3%
0.00%0.0%
Q2 2018$170,000
+97.7%
1,437
-15.0%
0.00%
-75.0%
Q1 2017$86,000
-43.4%
1,691
-33.5%
0.00%
-60.0%
Q3 2016$152,000
+50.5%
2,543
+60.1%
0.01%
+25.0%
Q4 2015$101,000
-34.8%
1,588
-31.4%
0.01%
-27.3%
Q3 2015$155,000
-60.9%
2,314
-60.6%
0.01%
-66.7%
Q2 2015$396,000
+344.9%
5,873
+361.0%
0.03%
+230.0%
Q1 2015$89,0001,2740.01%
Other shareholders
PROTO LABS INC shareholders Q2 2015
NameSharesValueWeighting ↓
Gs Investments, Inc. 91,570$6,158,083,0004.61%
Quantum Capital Management, LLC / NJ 156,285$10,510,0003.20%
Brown Capital Management 3,807,888$256,080,0003.14%
ARK Investment Management 207,577$13,960,0002.72%
RIVERBRIDGE PARTNERS LLC 1,967,865$132,339,0002.53%
Capital Investment Services of America, Inc. 146,104$9,825,0001.69%
Crestwood Capital Management, L.P. 48,600$3,268,0001.68%
Conestoga Capital Advisors, LLC 448,818$30,183,0001.57%
DISCIPLINED GROWTH INVESTORS INC /MN 965,215$64,911,0001.35%
BENDER ROBERT & ASSOCIATES 32,382$2,178,0001.34%
View complete list of PROTO LABS INC shareholders