| Period | Weighting | Quarter | ||||||
|---|---|---|---|---|---|---|---|---|
| Company | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| North Star Investment Management Corp. | 1 | 1 | 0.00% | 0.00% | 0.00% | Q2 2014 | Q2 2014 | 1 |
This page lists all the filers that currently own SPOK HOLDINGS INC or have owned SPOK HOLDINGS INC in the past.