| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| GRUBER & MCBAINE CAPITAL MANAGEMENT LLC | 6 | 6 | 0.50% | 0.99% | 1.34% | Q2 2013 | Q3 2014 | 6 |
| GLENMEDE TRUST CO NA | 4 | 4 | 0.02% | 0.03% | 0.05% | Q1 2008 | Q4 2008 | 4 |
External links
This page lists all the filers that currently own Willbros Group or have owned Willbros Group in the past.