ESSEX INVESTMENT MANAGEMENT CO LLC - PROTO LABS INC ownership

PROTO LABS INC's ticker is PRLB and the CUSIP is 743713109. A total of 275 filers reported holding PROTO LABS INC in Q3 2020. The put-call ratio across all filers is 0.34 and the average weighting 0.1%.

Quarter-by-quarter ownership
ESSEX INVESTMENT MANAGEMENT CO LLC ownership history of PROTO LABS INC
ValueSharesWeighting
Q2 2022$578,000
-13.2%
12,089
-4.0%
0.09%
+12.0%
Q1 2022$666,000
-2.5%
12,593
-5.3%
0.08%
+6.4%
Q4 2021$683,000
+6.7%
13,300
+153.1%
0.08%0.0%
Q1 2021$640,000
+30.1%
5,254
+20.1%
0.08%
-3.7%
Q2 2020$492,000
+28.1%
4,374
-31.8%
0.08%
+30.6%
Q3 2016$384,000
-51.0%
6,417
-41.7%
0.06%
-44.1%
Q4 2013$783,000
-64.1%
11,000
-67.2%
0.11%
-71.2%
Q2 2013$2,182,00033,5780.38%
Other shareholders
PROTO LABS INC shareholders Q3 2020
NameSharesValueWeighting ↓
Brown Capital Management 3,056,893$372,177,0002.77%
PREMIER ASSET MANAGEMENT LLC 67,800$8,255,0001.47%
Nikko Asset Management Americas, Inc. 1,976,509$240,640,0001.18%
Capital Investment Services of America, Inc. 92,843$11,304,0001.16%
GAGNON SECURITIES LLC 58,485$7,121,0001.08%
DISCIPLINED GROWTH INVESTORS INC /MN 398,710$48,543,0000.98%
BENDER ROBERT & ASSOCIATES 24,260$2,954,0000.95%
ARK Investment Management 3,654,854$444,978,0000.88%
RIVERBRIDGE PARTNERS LLC 625,607$76,168,0000.87%
Pembroke Management, LTD 69,123$8,416,0000.70%
View complete list of PROTO LABS INC shareholders