PROTO LABS INC's ticker is PRLB and the CUSIP is 743713109. A total of 183 filers reported holding PROTO LABS INC in Q3 2013. The put-call ratio across all filers is 1.36 and the average weighting 0.2%.
Quarter-by-quarter ownership
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Gs Investments, Inc. | 91,570 | $6,158,083,000 | 4.61% |
| Quantum Capital Management, LLC / NJ | 156,285 | $10,510,000 | 3.20% |
| Brown Capital Management | 3,807,888 | $256,080,000 | 3.14% |
| ARK Investment Management | 207,577 | $13,960,000 | 2.72% |
| RIVERBRIDGE PARTNERS LLC | 1,967,865 | $132,339,000 | 2.53% |
| Capital Investment Services of America, Inc. | 146,104 | $9,825,000 | 1.69% |
| Crestwood Capital Management, L.P. | 48,600 | $3,268,000 | 1.68% |
| Conestoga Capital Advisors, LLC | 448,818 | $30,183,000 | 1.57% |
| DISCIPLINED GROWTH INVESTORS INC /MN | 965,215 | $64,911,000 | 1.35% |
| BENDER ROBERT & ASSOCIATES | 32,382 | $2,178,000 | 1.34% |