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
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Brown Capital Management | 3,704,897 | $568,331,000 | 3.93% |
| RIVERBRIDGE PARTNERS LLC | 1,358,899 | $208,455,000 | 2.30% |
| DISCIPLINED GROWTH INVESTORS INC /MN | 621,477 | $95,335,000 | 1.84% |
| Capital Investment Services of America, Inc. | 112,898 | $17,319,000 | 1.81% |
| ARK Investment Management | 4,119,922 | $631,996,000 | 1.68% |
| PREMIER ASSET MANAGEMENT LLC | 52,830 | $8,104,000 | 1.66% |
| GAGNON SECURITIES LLC | 59,033 | $9,056,000 | 1.44% |
| Nikko Asset Management Americas, Inc. | 1,590,666 | $244,008,000 | 1.39% |
| Pembroke Management, LTD | 102,635 | $15,744,000 | 1.32% |
| FCF Advisors LLC | 13,068 | $2,254,000 | 1.31% |