| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| AMERICAN CAPITAL MANAGEMENT INC | 1 | 1 | 0.43% | 0.43% | 0.43% | Q2 2016 | Q2 2016 | 1 |
This page lists all the filers that currently own Proto Labs or have owned Proto Labs in the past.