GROUP ONE TRADING, L.P. - PROTO LABS INC ownership

PROTO LABS INC's ticker is PRLB and the CUSIP is 743713109. A total of 201 filers reported holding PROTO LABS INC in Q4 2016. The put-call ratio across all filers is 1.56 and the average weighting 0.2%.

Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of PROTO LABS INC
ValueSharesWeighting
Q3 2021$36,000
-10.0%
535
+23.0%
0.00%
Q2 2021$40,000
-83.5%
435
-72.6%
0.00%
Q4 2020$243,000
+14.1%
1,585
-3.5%
0.00%
-100.0%
Q3 2020$213,000
+50.0%
1,642
+17.3%
0.00%0.0%
Q4 2019$142,000
+1477.8%
1,400
+1566.7%
0.00%
Q4 2018$9,000
-95.2%
84
-92.7%
0.00%
-100.0%
Q3 2018$187,000
-87.2%
1,154
-91.9%
0.00%
-90.0%
Q4 2017$1,466,000
+47.2%
14,229
-3.9%
0.01%0.0%
Q2 2017$996,000
+258.3%
14,809
+172.5%
0.01%
+233.3%
Q1 2017$278,000
+93.1%
5,435
+93.4%
0.00%
+200.0%
Q4 2016$144,000
-44.0%
2,810
-37.0%
0.00%
-66.7%
Q2 2016$257,000
-11.1%
4,463
+19.2%
0.00%
-25.0%
Q1 2016$289,000
-49.1%
3,744
-58.1%
0.00%
-42.9%
Q4 2015$568,000
+25.1%
8,925
+31.7%
0.01%
+16.7%
Q3 2015$454,000
+3142.9%
6,778
+3289.0%
0.01%
Q3 2014$14,000
-98.4%
200
-98.2%
0.00%
-100.0%
Q3 2013$866,000
+633.9%
11,333
+522.4%
0.02%
+466.7%
Q2 2013$118,0001,8210.00%
Other shareholders
PROTO LABS INC shareholders Q4 2016
NameSharesValueWeighting ↓
Abdiel Capital Advisors 923,508$55,327,00016.27%
Quantum Capital Management, LLC / NJ 271,772$16,282,0005.14%
Crestwood Capital Management, L.P. 275,600$16,511,0004.87%
Brown Capital Management 3,012,802$180,497,0002.65%
RIVERBRIDGE PARTNERS LLC 1,902,885$114,002,0002.28%
Conestoga Capital Advisors, LLC 536,946$32,168,0002.20%
Capital Investment Services of America, Inc. 174,257$10,440,0001.99%
BENDER ROBERT & ASSOCIATES 41,905$2,511,0001.66%
Redmond Asset Management, LLC 43,532$2,608,0001.28%
Stephens Investment Management Group LLC 578,329$34,648,0001.03%
View complete list of PROTO LABS INC shareholders