Spark Investment Management LLC - PROTO LABS INC ownership

PROTO LABS INC's ticker is PRLB and the CUSIP is 743713109. A total of 207 filers reported holding PROTO LABS INC in Q3 2017. The put-call ratio across all filers is 1.21 and the average weighting 0.2%.

Quarter-by-quarter ownership
Spark Investment Management LLC ownership history of PROTO LABS INC
ValueSharesWeighting
Q3 2017$1,196,00014,9000.06%
Other shareholders
PROTO LABS INC shareholders Q3 2017
NameSharesValueWeighting ↓
Cupps Capital Management, LLC 645,795$49,332,0003.20%
FLOOD GAMBLE ASSOCIATES INC 71,875$6,027,0002.98%
Conestoga Capital Advisors, LLC 434,642$33,202,0002.84%
Lisanti Capital Growth, LLC 67,155$5,130,0002.34%
Timpani Capital Management LLC 50,334$3,845,0002.27%
Summit Creek Advisors LLC 160,231$12,240,0002.18%
Assured Investment Management LLC 690,692$52,762,0002.04%
ARBOR CAPITAL MANAGEMENT LLC 298,515$23,577,0002.02%
COLUMBIA PARTNERS L.L.C. INVESTMENT MANAGEMENT 589,728$45,049,0002.01%
RIVERBRIDGE PARTNERS LLC 1,200,028$91,670,0001.99%
View complete list of PROTO LABS INC shareholders